PROGRESSIVE CORP/OH/ PGR Financial Statement Data

2025 Q2

Submissions

Field	Row 1
adsh	0000080661-25-000023
cik	80661
name	PROGRESSIVE CORP/OH/
sic	6331
countryba	US
stprba	OH
cityba	MAYFIELD VILLAGE
zipba	44143
bas1	300 NORTH COMMONS BLVD.
bas2
baph	4404615000
countryma	US
stprma	OH
cityma	MAYFIELD VILLAGE
zipma	44143
mas1	300 NORTH COMMONS BLVD.
mas2
countryinc	US
stprinc	OH
ein	340963169
former
changed
afs	1-LAF
wksi	0
fye	1231
form	10-Q
period	20250331
fy	2025
fp	Q1
filed	20250505
accepted	2025-05-05 10:01:00.0
prevrpt	0
detail	1
instance	pgr-20250331_htm.xml
nciks	1
aciks

Description

Field Name	Field Description
adsh	Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission.
cik	Central Index Key (CIK). Ten digit number assigned by the SEC to each registrant that submits filings.
name	Name of registrant. This corresponds to the name of the legal entity as recorded in EDGAR as of the filing date.
sic	Standard Industrial Classification (SIC). Four digit code assigned by the SEC as of the filing date, indicating the registrant’s type of business.
countryba	The ISO 3166-1 country of the registrant's business address.
stprba	The state or province of the registrant’s business address, if field countryba is US or CA.
cityba	The city of the registrant's business address.
zipba	The zip code of the registrant’s business address.
bas1	The first line of the street of the registrant’s business address.
bas2	The second line of the street of the registrant’s business address.
baph	The phone number of the registrant’s business address.
countryma	The ISO 3166-1 country of the registrant's mailing address.
stprma	The state or province of the registrant’s mailing address, if field countryma is US or CA.
cityma	The city of the registrant's mailing address.
zipma	The zip code of the registrant’s mailing address.
mas1	The first line of the street of the registrant’s mailing address.
mas2	The second line of the street of the registrant’s mailing address.
countryinc	The ISO 3166-1 country of incorporation for the registrant.
stprinc	The state or province of incorporation for the registrant, if countryinc is US or CA.
ein	Employee Identification Number, 9 digit identification number assigned by the Internal Revenue Service to business entities operating in the United States.
former	Most recent former name of the registrant, if any.
changed	Date of change from the former name, if any.
afs	Filer status with the SEC at the time of submission: 1-LAF=Large Accelerated, 2-ACC=Accelerated, 3-SRA=Smaller Reporting Accelerated, 4-NON=Non-Accelerated, 5-SML=Smaller Reporting Filer, NULL=not assigned.
wksi	Well Known Seasoned Issuer (WKSI). An issuer that meets specific SEC requirements at some point during a 60-day period preceding the date the issuer satisfies its obligation to update its shelf registration statement.
fye	Fiscal Year End Date, rounded to nearest month-end.
form	The submission type of the registrant’s filing.
period	Balance Sheet Date, rounded to nearest month-end.
fy	Fiscal Year Focus (as defined in the EDGAR XBRL Guide Ch. 3.1.8).
fp	Fiscal Period Focus (as defined in the EDGAR XBRL Guide Ch. 3.1.8) within Fiscal Year.
filed	The date of the registrant’s filing with the Commission.
accepted	The acceptance date and time of the registrant’s filing with the Commission.
prevrpt	Previous Report – TRUE indicates that the submission information was subsequently amended.
detail	TRUE indicates that the XBRL submission contains quantitative disclosures within the footnotes and schedules at the required detail level (e.g., each amount).
instance	The name of the submitted XBRL Instance Document. The name often begins with the company ticker symbol.
nciks	Number of Central Index Keys (CIK) of registrants (i.e., business units) included in the consolidating entity’s submitted filing.
aciks	Additional CIKs of co-registrants included in a consolidating entity’s EDGAR submission, separated by spaces. If there are no other co-registrants (i.e., nciks=1), the value of aciks is NULL. For a very small number of filers, the entire list of co-registrants is too long to fit in the field. Where this is the case, users should refer to the complete submission file for all CIK information.

Numbers

adsh	ddate	tag	value	uom	qtrs	version	segments	footnote
0000080661-25-000023	20240331	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	-1809000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Equity Securities Common Equities Cost	708000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	38563000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	383000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	65949000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Liabilities	72317000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	6061000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	38563000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	45988000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	6643000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	4352000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	77741000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	4352000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	4352000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	1601000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	45988000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	2778000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16011000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	77754000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2595000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16016000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2604000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	168000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Common Stock Value Outstanding	586000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Debt And Equity Securities Gain Loss	-212000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Debt And Equity Securities Realized Gain Loss	1000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Debt Longterm And Shortterm Combined Amount	6894000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Debt Securities Availableforsale Fixed Maturities	75332000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Debt Securities Availablefor Sale Fixed Maturities Amortized Cost	65949000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Debt Securities Availablefor Sale Fixed Maturities Amortized Cost	77754000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Deferred Policy Acquisition Costs	1961000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Earnings Per Share Basic	3.9500	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Earnings Per Share Basic	4.3800	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Equity Securities Common Equities Cost	745000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Equity Securities Fv Ni	3968000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Equity Securities Fv Ni	584000000.0000	USD	0	us-gaap/2024	Financial Instrument= Nonredeemable Preferred Stock;
0000080661-25-000023	20240331	Equity Securities F V N I Common Equities	3195000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Equity Securities F V N I Nonredeemable Preferred Stock	886000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Fees And Other Revenues	287000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Fees And Other Revenues	249000000.0000	USD	1	0000080661-25-000023	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Income Tax Expense Benefit	669000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve	765000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Liabilities And Stockholders Equity	94128000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Liability For Claims And Claims Adjustment Expense	39822000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Net Cash Provided By Used In Operating Activities	4235000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Non Insurance Service Revenues	111000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20240331	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	-208000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250131	Payments Of Dividends Common Stock	58000000.0000	USD	0	us-gaap/2024	Dividends= O2024 Q4 Dividends;
0000080661-25-000023	20240229	Payments Of Dividends Preferred Stock And Preference Stock	8000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Preferred Stock Dividends Per Share Declared	15.6884	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Preferred Stock Shares Authorized	5000000.0000	shares	0	us-gaap/2024	Class Of Stock= Voting Preferred Stock;
0000080661-25-000023	20240331	Preferred Stock Shares Authorized	20000000.0000	shares	0	us-gaap/2024	Equity Components= Serial Preferred Stock;
0000080661-25-000023	20240331	Preferred Stock Shares Issued	0.0000	shares	0	us-gaap/2024	Class Of Stock= Voting Preferred Stock;
0000080661-25-000023	20250331	Premiums Earned Net	0.0000	USD	1	us-gaap/2024	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Reinsurance Recoverables On Paid And Unpaid Losses	4449000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Retained Earnings Accumulated Deficit	21020000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	-1616000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20240331	Stockholders Equity	0.0000	USD	0	us-gaap/2024	Equity Components= Preferred Stock;
0000080661-25-000023	20241231	Stockholders Equity	-1423000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20241231	Stockholders Equity	24283000000.0000	USD	0	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Treasury Stock Value Acquired Cost Method	1000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Treasury Stock Value Acquired Cost Method	0.0000	USD	1	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20241231	Unearned Premiums	23858000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Unearned Premiums	26612000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Weighted Average Number Diluted Shares Outstanding Adjustment	1900000.0000	shares	1	us-gaap/2024
0000080661-25-000023	20250331	Preferred Stock Dividends Income Statement Impact	0.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Preferred Stock Redemption Amount Excluding Dividends And Underwriters Fees	494000000.0000	USD	1	0000080661-25-000023	Equity Components= Preferred Stock;
0000080661-25-000023	20250331	Preferred Stock Redemption Amount Excluding Dividends And Underwriters Fees	0.0000	USD	1	0000080661-25-000023	Equity Components= Preferred Stock;
0000080661-25-000023	20240331	Premiums Earned Net	0.0000	USD	1	us-gaap/2024	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Premiums Receivable At Carrying Value	14193000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Premiums Receivable At Carrying Value	16811000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Prepaid Reinsurance Premiums	210000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Maturities Prepayments And Calls Of Equity Securities F V N I	24000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Short Term Investments	2595000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Stockholders Equity	-1000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Translation Adjustment;
0000080661-25-000023	20240331	Stockholders Equity	21020000000.0000	USD	0	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Stockholders Equity	-509000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Net Unrealized Investment Gain Loss;
0000080661-25-000023	20250331	Stockholders Equity	0.0000	USD	0	us-gaap/2024	Equity Components= Preferred Stock;
0000080661-25-000023	20250331	Treasury Stock Common Shares	212000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20250331	Treasury Stock Value Acquired Cost Method	1000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Unearned Premiums	22907000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Weighted Average Number Diluted Shares Outstanding Adjustment	1700000.0000	shares	1	us-gaap/2024
0000080661-25-000023	20240331	Weighted Average Number Of Shares Outstanding Basic	585400000.0000	shares	1	us-gaap/2024
0000080661-25-000023	20241231	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	1461000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	-509000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Additional Paid In Capital Common Stock	2029000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value	16000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	39890000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	38563000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3852000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	6061000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3852000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3852000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	38563000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	1327000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	45988000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	613000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	6682000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	615000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	13954000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	46913000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	4825000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2604000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	4825000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Cash	195000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect	53000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Common Stock Shares Authorized	900000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20241231	Common Stock Value Outstanding	586000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Comprehensive Income Net Of Tax	3466000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Debt Securities Availableforsale Fixed Maturities	63630000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Debt Securities Availableforsale Fixed Maturities	77101000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Debt Securities Availablefor Sale Fixed Maturities Amortized Cost	77126000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Deferred Income Tax Assets Net	954000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Earnings Per Share Diluted	3.9400	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Equity Securities Fv Ni	886000000.0000	USD	0	us-gaap/2024	Financial Instrument= Nonredeemable Preferred Stock;
0000080661-25-000023	20241231	Equity Securities Fv Ni	728000000.0000	USD	0	us-gaap/2024	Financial Instrument= Nonredeemable Preferred Stock;
0000080661-25-000023	20240331	Gain Loss On Sale Of Property Plant Equipment	2000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Accounts Payable And Accrued Liabilities	334000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Reinsurance Recoverable	-91000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Unearned Premiums	2754000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Interest Expense Debt	70000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Net Cash Provided By Used In Investing Activities	-3124000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Net Income Loss Available To Common Stockholders Basic	2314000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	899000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240131	Payments Of Dividends Common Stock	439000000.0000	USD	0	us-gaap/2024	Dividends= O2023 A Dividends;
0000080661-25-000023	20240430	Payments Of Dividends Common Stock	59000000.0000	USD	0	us-gaap/2024	Dividends= O2024 Q1 Dividends;
0000080661-25-000023	20250331	Payments Of Dividends Preferred Stock And Preference Stock	0.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Payments To Acquire Property Plant And Equipment	59000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Premiums Receivable Allowance For Doubtful Accounts	473000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Property Plant And Equipment Net	790000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Restricted Cash And Cash Equivalents	11000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Restricted Stock Expense	17000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Revenues	20409000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Short Term Investments	1327000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	-1601000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Net Unrealized Investment Gain Loss;
0000080661-25-000023	20240331	Stockholders Equity	586000000.0000	USD	0	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20250331	Stockholders Equity	-14000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent;
0000080661-25-000023	20240331	Stock Issued During Period Value Restricted Stock Award Gross	-1000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20250331	Stock Issued During Period Value Restricted Stock Award Gross	0.0000	USD	1	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20240331	Treasury Stock Value Acquired Cost Method	36000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Accounts Payable And Accrued Liabilities Current And Noncurrent	9127000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	1490000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	-1000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	25064000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	6146000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	4368000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	2201000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	1327000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	12695000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	383000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	75947000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	44318000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	32778000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16047000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	7139000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	44318000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Cash	143000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect	68000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Common Stock Shares Issued	798000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20240331	Debt Securities Availablefor Sale Short Term Investments Amortized Cost	1327000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Deferred Income Tax Assets Net	860000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Deferred Policy Acquisition Cost Amortization Expense	1456000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Deferred Policy Acquisition Costs	1818000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Depreciation	70000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Dividends Common Stock Cash	59000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Earnings Per Share Diluted	4.3700	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Fees And Other Revenues	236000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20240331	Fees And Other Revenues	40000000.0000	USD	1	0000080661-25-000023	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Fees And Other Revenues	38000000.0000	USD	1	0000080661-25-000023	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Liabilities And Stockholders Equity	111409000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Liability For Claims And Claims Adjustment Expense	39057000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Net Income Loss	2567000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Net Income Loss Available To Common Stockholders Basic	2567000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Other Comprehensive Income Loss Net Of Tax	-208000000.0000	USD	1	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20240331	Payments Of Dividends Common Stock	498000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Payments Of Dividends Preferred Stock And Preference Stock	8000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Policyholder Benefits And Claims Incurred Net	10972000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20231231	Premiums Receivable Allowance For Doubtful Accounts	369000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities	1950000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Proceeds From Maturities Prepayments And Calls Of Equity Securities F V N I	87000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Proceeds From Payables To Broker Dealers Investing Activities	172000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Proceeds From Sale Of Equity Securities Fv Ni	149000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Proceeds From Sale Of Property Plant And Equipment	13000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Reinsurance Recoverables On Paid And Unpaid Losses	4765000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	585000000.0000	USD	0	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20240331	Stockholders Equity	21811000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Stockholders Equity	-1824000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20240331	Stockholders Equity	2029000000.0000	USD	0	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20241231	Stockholders Equity	586000000.0000	USD	0	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20250331	Stockholders Equity	-524000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20240331	Stockholders Equity Other	8000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Stock Issued During Period Value Restricted Stock Award Gross	1000000.0000	USD	1	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20250331	Stock Issued During Period Value Restricted Stock Award Gross	0.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Weighted Average Number Of Diluted Shares Outstanding	587300000.0000	shares	1	us-gaap/2024
0000080661-25-000023	20240331	Accounts Payable And Accrued Liabilities Current And Noncurrent	7689000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	-1000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Assets	105745000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	64957000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Revenues	17243000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	63630000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	1600000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	13954000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	1601000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16016000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2604000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2595000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20231231	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	100000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Common Stock Shares Authorized	900000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20241231	Common Stock Shares Issued	798000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20241231	Debt Securities Availablefor Sale Short Term Investments Amortized Cost	615000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Equity Securities Nonredeemable Preferred Stock Cost	931000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Equity Securities Nonredeemable Preferred Stock Cost	608000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Gain Loss On Sale Of Property Plant Equipment	-3000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest	2940000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Other Operating Capital Net	65000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Premiums Receivable	2442000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Prepaid Reinsurance Premiums	-40000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Interest Expense Debt	70000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Investment Income Investment Expense	7000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Investments	83664000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Liability For Claims And Claims Adjustment Expense	34389000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Net Cash Provided By Used In Operating Activities	5143000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Net Income Loss	2331000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Non Insurance Service Expenses	117000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20240331	Non Insurance Service Revenues	84000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20240331	Payments For Proceeds From Short Term Investments	-479000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Payments For Repurchase Of Preferred Stock And Preference Stock	500000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Payments To Acquire Available For Sale Securities Debt	17324000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Payments To Acquire Property Plant And Equipment	50000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Policyholder Benefits And Claims Incurred Net	1876000000.0000	USD	1	us-gaap/2024	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Policyholder Benefits And Claims Incurred Net	1851000000.0000	USD	1	us-gaap/2024	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Preferred Stock Dividends Income Statement Impact	17000000.0000	USD	1	us-gaap/2024		All of our outstanding Serial Preferred Shares, Series B, were redeemed in February 2024.
0000080661-25-000023	20240331	Premiums Earned Net	16149000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Premiums Earned Net	19409000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Property Plant And Equipment Net	854000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Reinsurance Recoverables On Paid And Unpaid Losses	5003000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Retained Earnings Accumulated Deficit	26732000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	-14000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent;
0000080661-25-000023	20240331	Stockholders Equity	-14000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent;
0000080661-25-000023	20241231	Stockholders Equity	25591000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Stockholders Equity	-1000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Translation Adjustment;
0000080661-25-000023	20250331	Stockholders Equity	586000000.0000	USD	0	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20250331	Stockholders Equity	26732000000.0000	USD	0	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Weighted Average Number Of Shares Outstanding Basic	586000000.0000	shares	1	us-gaap/2024
0000080661-25-000023	20241231	Accounts Payable And Accrued Liabilities Current And Noncurrent	10346000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Accrued Investment Income Receivable	584000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	1580000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	-1408000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Accumulated Other Comprehensive Income Loss Net Of Tax	-1824000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Accumulated Other Comprehensive Income Loss Net Of Tax	-524000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax	-14000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	1327000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	6061000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	12695000000.0000	USD	0	us-gaap/2024	Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	29341000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	1601000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	4721000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	6643000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	7164000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	44523000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2183000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	77101000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Benefits Losses And Expenses	14303000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Benefits Losses And Expenses	17173000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Common Stock Par Or Stated Value Per Share	1.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Debt And Equity Securities Unrealized Gain Loss	302000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Debt Longterm And Shortterm Combined Amount	6893000000.0000	USD	0	us-gaap/2024		Consists solely of long-term debt. See Note 4 Debt for further discussion.
0000080661-25-000023	20250331	Dividends Share Based Compensation	0.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20241231	Equity Securities Fv Ni	4303000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Fees And Other Revenues	0.0000	USD	1	0000080661-25-000023	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest	3236000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Income Taxes	609000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Income Taxes	667000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Interest And Dividend Income Operating	618000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Investment Income Investment Expense	6000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Net Cash Provided By Used In Investing Activities	-2341000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Other Assets	1606000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Other Comprehensive Income Loss Net Of Tax	899000000.0000	USD	1	us-gaap/2024	Equity Components= Accumulated Other Comprehensive Income;
0000080661-25-000023	20240331	Payments To Acquire Equity Securities Fv Ni	32000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Policyholder Benefits And Claims Incurred Net	-2000000.0000	USD	1	us-gaap/2024	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Policyholder Benefits And Claims Incurred Net	9098000000.0000	USD	1	us-gaap/2024	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Preferred Stock Dividends Per Share Declared	0.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Preferred Stock Shares Authorized	5000000.0000	shares	0	us-gaap/2024	Class Of Stock= Voting Preferred Stock;
0000080661-25-000023	20250331	Preferred Stock Shares Authorized	20000000.0000	shares	0	us-gaap/2024	Equity Components= Serial Preferred Stock;
0000080661-25-000023	20250331	Preferred Stock Shares Issued	0.0000	shares	0	us-gaap/2024	Class Of Stock= Voting Preferred Stock;
0000080661-25-000023	20240331	Premiums Earned Net	13591000000.0000	USD	1	us-gaap/2024	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20241231	Premiums Receivable Allowance For Doubtful Accounts	460000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Sale Of Available For Sale Securities Debt	7765000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Property Plant And Equipment Net	756000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Restricted Cash And Cash Equivalents	12000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Retained Earnings Accumulated Deficit	24283000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Short Term Investments	615000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	494000000.0000	USD	0	us-gaap/2024	Equity Components= Preferred Stock;
0000080661-25-000023	20231231	Stockholders Equity	18801000000.0000	USD	0	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Stockholders Equity	-1809000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Net Unrealized Investment Gain Loss;
0000080661-25-000023	20241231	Stockholders Equity	2145000000.0000	USD	0	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20250331	Stockholders Equity Other	6000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20250331	Treasury Stock Value Acquired Cost Method	0.0000	USD	1	us-gaap/2024	Equity Components= Common Stock;
0000080661-25-000023	20250331	Treasury Stock Value Acquired Cost Method	53000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20231231	Accumulated Other Comprehensive Income Loss Net Of Tax	-1616000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Accumulated Other Comprehensive Income Loss Net Of Tax	-1423000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value	17000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax	-14000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Assets	94128000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Assets	111409000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	12692000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	3000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	39824000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	383000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	14111000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	2778000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2688000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Accretion Amortization Of Discounts And Premiums Investments	7000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Accretion Amortization Of Discounts And Premiums Investments	21000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Additional Paid In Capital Common Stock	2160000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax	-14000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	67276000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	13003000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	390000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	13949000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	2778000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	2000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	5000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	77126000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	45988000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	75332000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	44318000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	32778000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	5144000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2172000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	7139000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Cash	155000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Common Stock Dividends Per Share Declared	0.1000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Common Stock Dividends Per Share Declared	0.1000	USD	1	us-gaap/2024	Dividends= O2025 Q1 Dividends;
0000080661-25-000023	20250331	Common Stock Par Or Stated Value Per Share	1.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Debt And Equity Securities Unrealized Gain Loss	-213000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Debt Longterm And Shortterm Combined Amount	6890000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Debt Securities Availablefor Sale Short Term Investments Amortized Cost	2595000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Deferred Income Tax Assets Net	1032000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Dividends Preferred Stock Cash	8000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Dividends Share Based Compensation	-1000000.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20250331	Dividends Share Based Compensation	0.0000	USD	1	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20250331	Equity Securities Common Equities Cost	774000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Equity Securities Fv Ni	3575000000.0000	USD	0	us-gaap/2024	Financial Instrument= Common Stock;
0000080661-25-000023	20250331	Equity Securities F V N I Nonredeemable Preferred Stock	584000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Fees And Other Revenues	196000000.0000	USD	1	0000080661-25-000023	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Income Tax Expense Benefit	609000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Accounts Payable And Accrued Liabilities	458000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Deferred Policy Acquisition Costs	107000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Other Operating Capital Net	34000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Unearned Premiums	2773000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Liabilities	80154000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Liabilities	82455000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Net Income Loss	2331000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Other Assets	1446000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Other Assets	1559000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Paymentsfor Repurchaseof Common Stockfor Restricted Stock Tax Liabilities	37000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Payments For Repurchase Of Preferred Stock And Preference Stock	0.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Payments To Acquire Available For Sale Securities Debt	13288000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Payments To Acquire Equity Securities Fv Ni	86000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Prepaid Reinsurance Premiums	349000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Prepaid Reinsurance Premiums	306000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities	1855000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Sale Of Property Plant And Equipment	3000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Restricted Cash And Cash Equivalents	13000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Restricted Stock Expense	16000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	2013000000.0000	USD	0	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20250331	Stockholders Equity	-1000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Translation Adjustment;
0000080661-25-000023	20250331	Stockholders Equity	2160000000.0000	USD	0	us-gaap/2024	Equity Components= Additional Paid In Capital;
0000080661-25-000023	20240331	Treasury Stock Common Shares	212000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20241231	Treasury Stock Common Shares	212000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	4825000000.0000	USD	0	us-gaap/2024	Financial Instrument= Commercial Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	44318000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	154000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Common Stock Dividends Per Share Declared	0.1000	USD	1	us-gaap/2024
0000080661-25-000023	20241231	Common Stock Par Or Stated Value Per Share	1.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Common Stock Value Outstanding	586000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Debt And Equity Securities Gain Loss	156000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Dividends Common Stock Cash	59000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;	See Note 9 Dividends for further discussion.
0000080661-25-000023	20240331	Dividends Share Based Compensation	1000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve	442000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Increase Decrease In Premiums Receivable	2235000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Prepaid Reinsurance Premiums	-43000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Other Underwriting Expense	1931000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Other Underwriting Expense	2719000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240131	Payments Of Dividends Common Stock	59000000.0000	USD	0	us-gaap/2024	Dividends= O2023 Q4 Dividends;
0000080661-25-000023	20250331	Policyholder Benefits And Claims Incurred Net	12804000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Accrued Investment Income Receivable	464000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Accrued Investment Income Receivable	594000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	-1000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Additional Paid In Capital Common Stock	2145000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	25064000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	2060000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	17000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	2060000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20240331	Available For Sale Securities Debt Securities	2060000000.0000	USD	0	us-gaap/2024	Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	46601000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Corporate Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	29339000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	47103000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	2893000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; Financial Instrument= U S States And Political Subdivisions; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	6643000000.0000	USD	0	us-gaap/2024	Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20241231	Available For Sale Securities Debt Securities	615000000.0000	USD	0	us-gaap/2024	Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	79696000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2595000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; Information By Category Of Debt Security= Short Term Investments;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	7139000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2183000000.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	0.0000	USD	0	us-gaap/2024	Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; Financial Instrument= Asset Backed Securities Securitized Loans And Receivables; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Asset Backed Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	80349000000.0000	USD	0	us-gaap/2024	Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	16000000.0000	USD	0	us-gaap/2024	Financial Instrument= Foreign Government Debt Securities; Information By Category Of Debt Security= Fixed Maturities; Investment Portfolio= Debt Securities;
0000080661-25-000023	20250331	Available For Sale Securities Debt Securities	2183000000.0000	USD	0	us-gaap/2024	Financial Instrument= Residential Mortgage Backed Securities; Information By Category Of Debt Security= Fixed Maturities;
0000080661-25-000023	20250331	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	207000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Common Stock Shares Authorized	900000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20250331	Common Stock Shares Issued	798000000.0000	shares	0	us-gaap/2024
0000080661-25-000023	20240331	Comprehensive Income Net Of Tax	2123000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Debt And Equity Securities Realized Gain Loss	-146000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Deferred Policy Acquisition Cost Amortization Expense	1232000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Deferred Policy Acquisition Costs	2068000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Depreciation	70000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Dividends Preferred Stock Cash	0.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Equity Securities Fv Ni	4081000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Equity Securities Fv Ni	3195000000.0000	USD	0	us-gaap/2024	Financial Instrument= Common Stock;
0000080661-25-000023	20250331	Equity Securities Fv Ni	3384000000.0000	USD	0	us-gaap/2024	Financial Instrument= Common Stock;
0000080661-25-000023	20241231	Equity Securities F V N I Common Equities	3575000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20250331	Equity Securities F V N I Common Equities	3384000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Equity Securities F V N I Nonredeemable Preferred Stock	728000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20241231	Equity Securities Nonredeemable Preferred Stock Cost	756000000.0000	USD	0	0000080661-25-000023
0000080661-25-000023	20240331	Fees And Other Revenues	0.0000	USD	1	0000080661-25-000023	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Increase Decrease In Deferred Policy Acquisition Costs	131000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Increase Decrease In Reinsurance Recoverable	-316000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Interest And Dividend Income Operating	814000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Investments	69038000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Investments	80250000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Liabilities And Stockholders Equity	105745000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Liability For Claims And Claims Adjustment Expense	34831000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Net Cash Provided By Used In Financing Activities	-1043000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Net Cash Provided By Used In Financing Activities	-2749000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Net Income Loss	2567000000.0000	USD	1	us-gaap/2024	Equity Components= Retained Earnings;
0000080661-25-000023	20240331	Non Insurance Service Expenses	92000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Payments For Proceeds From Short Term Investments	1964000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Paymentsfor Repurchaseof Common Stockfor Restricted Stock Tax Liabilities	54000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250131	Payments Of Dividends Common Stock	2637000000.0000	USD	0	us-gaap/2024	Dividends= O2024 A Dividends;
0000080661-25-000023	20250331	Payments Of Dividends Common Stock	2695000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Policyholder Benefits And Claims Incurred Net	0.0000	USD	1	us-gaap/2024	Business Segments= Other Indemnity Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Policyholder Benefits And Claims Incurred Net	10953000000.0000	USD	1	us-gaap/2024	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Premiums Earned Net	2558000000.0000	USD	1	us-gaap/2024	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Premiums Earned Net	2699000000.0000	USD	1	us-gaap/2024	Business Segments= Commercial Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20250331	Premiums Earned Net	16710000000.0000	USD	1	us-gaap/2024	Business Segments= Personal Lines Segment; Consolidation Items= Operating Segments; Product Or Service= Underwriting Operations;
0000080661-25-000023	20240331	Premiums Receivable Allowance For Doubtful Accounts	328000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20241231	Premiums Receivable At Carrying Value	14369000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Payables To Broker Dealers Investing Activities	62000000.0000	USD	1	0000080661-25-000023
0000080661-25-000023	20250331	Proceeds From Sale Of Available For Sale Securities Debt	14721000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Proceeds From Sale Of Equity Securities Fv Ni	58000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20240331	Realized Investment Gains Losses	156000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20250331	Realized Investment Gains Losses	-212000000.0000	USD	1	us-gaap/2024
0000080661-25-000023	20231231	Stockholders Equity	-1000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Translation Adjustment;
0000080661-25-000023	20241231	Stockholders Equity	-14000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent;
0000080661-25-000023	20241231	Stockholders Equity	-1408000000.0000	USD	0	us-gaap/2024	Equity Components= Accumulated Net Unrealized Investment Gain Loss;
0000080661-25-000023	20241231	Stockholders Equity	0.0000	USD	0	us-gaap/2024	Equity Components= Preferred Stock;
0000080661-25-000023	20250331	Stockholders Equity	28954000000.0000	USD	0	us-gaap/2024
0000080661-25-000023	20250331	Weighted Average Number Of Diluted Shares Outstanding	587700000.0000	shares	1	us-gaap/2024

Description

Field Name	Field Description
adsh	Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission.
tag	The unique identifier (name) for a tag in a specific taxonomy release.
version	For a standard tag, an identifier for the taxonomy; otherwise the accession number where the tag was defined.
ddate	The end date for the data value, rounded to the nearest month end.
qtrs	The count of the number of quarters represented by the data value, rounded to the nearest whole number. “0” indicates it is a point-in-time value.
uom	The unit of measure for the value.
segments	Tags used to represent axis and member reporting.
coreg	If specified, indicates a specific co-registrant, the parent company, or other entity (e.g., guarantor). NULL indicates the consolidated entity.
value	The value. This is not scaled, it is as found in the Interactive Data file, but is limited to four digits to the right of the decimal point.
footnote	The text of any superscripted footnotes on the value, as shown on the statement page, truncated to 512 characters, or if there is no footnote, then this field will be blank.

Tags

tag	version	custom	datatype	iord	crdr	tlabel	doc
Payments For Proceeds From Short Term Investments	us-gaap/2024	0	monetary	D	C	Payments for (Proceeds from) Short-Term Investments	The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.
Restricted Stock Expense	us-gaap/2024	0	monetary	D	D	Restricted Stock or Unit Expense	Amount of noncash expense for award of restricted stock or unit under share-based payment arrangement.
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	us-gaap/2024	0	monetary	I	D	Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
Payments To Acquire Equity Securities Fv Ni	us-gaap/2024	0	monetary	D	C	Payments to Acquire Equity Securities, FV-NI	Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.
Payments To Acquire Property Plant And Equipment	us-gaap/2024	0	monetary	D	C	Payments to Acquire Property, Plant, and Equipment	The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
Preferred Stock Redemption Amount Excluding Dividends And Underwriters Fees	0000080661-25-000023	1	monetary	D	D	Preferred Stock, Redemption Amount, Excluding Dividends and Underwriters Fees	Preferred Stock, Redemption Amount, Excluding Dividends and Underwriters Fees
Accumulated Other Comprehensive Income Loss Net Of Tax	us-gaap/2024	0	monetary	I	C	Accumulated Other Comprehensive Income (Loss), Net of Tax	Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.
Accounts Payable And Accrued Liabilities Current And Noncurrent	us-gaap/2024	0	monetary	I	C	Accounts Payable and Accrued Liabilities	Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	us-gaap/2024	0	monetary	I	C	Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.
Comprehensive Income Net Of Tax	us-gaap/2024	0	monetary	D	C	Comprehensive Income (Loss), Net of Tax, Attributable to Parent	Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
Debt And Equity Securities Realized Gain Loss	us-gaap/2024	0	monetary	D	C	Debt and Equity Securities, Realized Gain (Loss)	Amount of realized gain (loss) on investment in debt and equity securities.
Deferred Income Tax Assets Net	us-gaap/2024	0	monetary	I	D	Deferred Income Tax Assets, Net	Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.
Deferred Policy Acquisition Costs	us-gaap/2024	0	monetary	I	D	Deferred Policy Acquisition Cost	Amount of deferred policy acquisition cost capitalized on contract remaining in force.
Equity Securities Fv Ni	us-gaap/2024	0	monetary	I	D	Equity Securities, FV-NI, Current	Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest	us-gaap/2024	0	monetary	D	C	Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
Increase Decrease In Premiums Receivable	us-gaap/2024	0	monetary	D	C	Increase (Decrease) in Premiums Receivable	The change in the premium receivable balance on the balance sheet.
Increase Decrease In Prepaid Reinsurance Premiums	us-gaap/2024	0	monetary	D	C	Increase (Decrease) in Prepaid Reinsurance Premiums	The change in prepaid reinsurance premiums recorded on the balance sheet, which is needed to adjust net income to arrive at net cash flows provided by or used in operations.
Liabilities	us-gaap/2024	0	monetary	I	C	Liabilities	Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others.
Liabilities And Stockholders Equity	us-gaap/2024	0	monetary	I	C	Liabilities and Equity	Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
Realized Investment Gains Losses	us-gaap/2024	0	monetary	D	C	Realized Investment Gains (Losses)	Amount of realized gain (loss) on investment.
Retained Earnings Accumulated Deficit	us-gaap/2024	0	monetary	I	C	Retained Earnings (Accumulated Deficit)	Amount of accumulated undistributed earnings (deficit).
Short Term Investments	us-gaap/2024	0	monetary	I	D	Short-Term Investments	Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.
Fees And Other Revenues	0000080661-25-000023	1	monetary	D	C	Fees And Other Revenues	Fees collected from policyholders and other revenues
Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	us-gaap/2024	0	monetary	I	C	AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax	Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Available For Sale Securities Debt Securities	us-gaap/2024	0	monetary	I	D	Debt Securities, Available-for-Sale	Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Common Stock Dividends Per Share Declared	us-gaap/2024	0	perShare	D		Common Stock, Dividends, Per Share, Declared	Aggregate dividends declared during the period for each share of common stock outstanding.
Common Stock Par Or Stated Value Per Share	us-gaap/2024	0	perShare	I		Common Stock, Par or Stated Value Per Share	Face amount or stated value per share of common stock.
Income Tax Expense Benefit	us-gaap/2024	0	monetary	D	D	Income Tax Expense (Benefit)	Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
Net Income Loss	us-gaap/2024	0	monetary	D	C	Net Income (Loss) Attributable to Parent	The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
Stockholders Equity	us-gaap/2024	0	monetary	I	C	Equity, Attributable to Parent	Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.
Stockholders Equity Other	us-gaap/2024	0	monetary	D	D	Stockholders' Equity, Other	This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
Weighted Average Number Of Diluted Shares Outstanding	us-gaap/2024	0	shares	D		Weighted Average Number of Shares Outstanding, Diluted	The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
Proceeds From Maturities Prepayments And Calls Of Equity Securities F V N I	0000080661-25-000023	1	monetary	D	D	Proceeds From Maturities Prepayments And Calls Of Equity Securities, FV-NI	Amount of cash inflow from calls (early redemptions) on equity securities measured at fair value with changes in fair value recognized in net income (FV-NI), classified as investing activity.
Assets	us-gaap/2024	0	monetary	I	D	Assets	Amount of asset recognized for present right to economic benefit.
Cash	us-gaap/2024	0	monetary	I	D	Cash	Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.
Common Stock Shares Issued	us-gaap/2024	0	shares	I		Common Stock, Shares, Issued	Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
Dividends Common Stock Cash	us-gaap/2024	0	monetary	D	D	Dividends, Common Stock, Cash	Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
Earnings Per Share Diluted	us-gaap/2024	0	perShare	D		Earnings Per Share, Diluted	The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
Payments For Repurchase Of Preferred Stock And Preference Stock	us-gaap/2024	0	monetary	D	C	Payments for Repurchase of Preferred Stock and Preference Stock	The cash outflow to reacquire preferred stock during the period.
Policyholder Benefits And Claims Incurred Net	us-gaap/2024	0	monetary	D	D	Policyholder Benefits and Claims Incurred, Net	Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.
Premiums Receivable At Carrying Value	us-gaap/2024	0	monetary	I	D	Premiums Receivable, Net	The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts.
Unearned Premiums	us-gaap/2024	0	monetary	I	C	Unearned Premiums	Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date.
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve	us-gaap/2024	0	monetary	D	D	Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve	Amount of increase (decrease) in liability to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Increase Decrease In Other Operating Capital Net	us-gaap/2024	0	monetary	D	C	Increase (Decrease) in Other Operating Assets and Liabilities, Net	Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.
Payments To Acquire Available For Sale Securities Debt	us-gaap/2024	0	monetary	D	C	Payments to Acquire Debt Securities, Available-for-Sale	Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Preferred Stock Shares Issued	us-gaap/2024	0	shares	I		Preferred Stock, Shares Issued	Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt.
Accrued Investment Income Receivable	us-gaap/2024	0	monetary	I	D	Accrued Investment Income Receivable	Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.
Benefits Losses And Expenses	us-gaap/2024	0	monetary	D	D	Benefits, Losses and Expenses	The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs.
Debt Longterm And Shortterm Combined Amount	us-gaap/2024	0	monetary	I	C	Debt, Long-Term and Short-Term, Combined Amount	Represents the aggregate of total long-term debt, including current maturities and short-term debt.
Interest Expense Debt	us-gaap/2024	0	monetary	D	D	Interest Expense, Debt	Amount of the cost of borrowed funds accounted for as interest expense for debt.
Other Comprehensive Income Loss Net Of Tax	us-gaap/2024	0	monetary	D	C	Other Comprehensive Income (Loss), Net of Tax	Amount after tax and reclassification adjustments of other comprehensive income (loss).
Premiums Earned Net	us-gaap/2024	0	monetary	D	C	Premiums Earned, Net	Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.
Proceeds From Sale Of Property Plant And Equipment	us-gaap/2024	0	monetary	D	D	Proceeds from Sale of Property, Plant, and Equipment	The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
Weighted Average Number Diluted Shares Outstanding Adjustment	us-gaap/2024	0	shares	D		Weighted Average Number of Shares Outstanding, Diluted, Adjustment	The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.
Debt Securities Availableforsale Fixed Maturities	0000080661-25-000023	1	monetary	I	D	Debt Securities, Available-for-sale, Fixed Maturities	Amount of investment in long-term debt securities (fixed maturities) measured at fair value with changes in fair value recognized in other comprehensive income (available-for-sale).
Equity Securities Common Equities Cost	0000080661-25-000023	1	monetary	I	D	Equity Securities Common Equities Cost	Equity Securities Common Equities Cost
Paymentsfor Repurchaseof Common Stockfor Restricted Stock Tax Liabilities	0000080661-25-000023	1	monetary	D	C	Payments for Repurchase of Common Stock for Restricted Stock Tax Liabilities	Payments for Repurchase of Common Stock for Restricted Stock Tax Liabilities
Proceeds From Payables To Broker Dealers Investing Activities	0000080661-25-000023	1	monetary	D	D	Proceeds from Payables to Broker Dealers, Investing Activities	Proceeds from Payables to Broker Dealers, Investing Activities
Deferred Policy Acquisition Cost Amortization Expense	us-gaap/2024	0	monetary	D	D	Deferred Policy Acquisition Costs, Amortization Expense	Amount of amortization expense (reversal of expense) for deferred policy acquisition costs.
Interest And Dividend Income Operating	us-gaap/2024	0	monetary	D	C	Interest and Dividend Income, Operating	Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.
Liability For Claims And Claims Adjustment Expense	us-gaap/2024	0	monetary	I	C	Liability for Claims and Claims Adjustment Expense	The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Net Cash Provided By Used In Operating Activities	us-gaap/2024	0	monetary	D		Net Cash Provided by (Used in) Operating Activities	Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	us-gaap/2024	0	monetary	D	C	OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.
Other Underwriting Expense	us-gaap/2024	0	monetary	D	D	Other Underwriting Expense	Costs incurred during the period, such as those relating to general administration and policy maintenance that do not vary with and are not primarily related to the acquisition or renewal of insurance contracts.
Proceeds From Sale Of Equity Securities Fv Ni	us-gaap/2024	0	monetary	D	D	Proceeds from Sale of Equity Securities, FV-NI	Amount of cash inflow from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.
Dividends Preferred Stock Cash	us-gaap/2024	0	monetary	D	D	Dividends, Preferred Stock, Cash	Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.
Revenues	us-gaap/2024	0	monetary	D	C	Revenues	Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
Additional Paid In Capital Common Stock	us-gaap/2024	0	monetary	I	C	Additional Paid in Capital, Common Stock	Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect	us-gaap/2024	0	monetary	D	D	Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
Common Stock Shares Authorized	us-gaap/2024	0	shares	I		Common Stock, Shares Authorized	The maximum number of common shares permitted to be issued by an entity's charter and bylaws.
Dividends Share Based Compensation	us-gaap/2024	0	monetary	D	D	Dividend, Share-Based Payment Arrangement	Amount of paid and unpaid cash, stock, and paid-in-kind dividends declared for award under share-based payment arrangement.
Net Cash Provided By Used In Financing Activities	us-gaap/2024	0	monetary	D	D	Net Cash Provided by (Used in) Financing Activities	Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
Net Income Loss Available To Common Stockholders Basic	us-gaap/2024	0	monetary	D	C	Net Income (Loss) Available to Common Stockholders, Basic	Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
Premiums Receivable Allowance For Doubtful Accounts	us-gaap/2024	0	monetary	I	C	Premium Receivable, Allowance for Credit Loss	The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value.
Prepaid Reinsurance Premiums	us-gaap/2024	0	monetary	I	D	Prepaid Reinsurance Premiums	The unexpired portion of premiums ceded on policies in force as of the balance sheet date.
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities	us-gaap/2024	0	monetary	D	D	Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale	Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Proceeds From Sale Of Available For Sale Securities Debt	us-gaap/2024	0	monetary	D	D	Proceeds from Sale of Debt Securities, Available-for-Sale	Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Stock Issued During Period Value Restricted Stock Award Gross	us-gaap/2024	0	monetary	D	C	Stock Issued During Period, Value, Restricted Stock Award, Gross	Aggregate value of stock related to Restricted Stock Awards issued during the period.
Common Stock Value Outstanding	us-gaap/2024	0	monetary	I	C	Common Stock, Value, Outstanding	Value of common shares held by shareholders. Excludes common shares repurchased and held as treasury shares.
Gain Loss On Sale Of Property Plant Equipment	us-gaap/2024	0	monetary	D	C	Gain (Loss) on Disposition of Property Plant Equipment	Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.
Debt Securities Availablefor Sale Fixed Maturities Amortized Cost	0000080661-25-000023	1	monetary	I	D	Debt Securities, Available-for-Sale Fixed Maturities, Amortized Cost	Amortized cost of investments in long-term debt securities (fixed maturities) measured at fair value with changes in fair value recognized in other comprehensive income (available-for-sale).
Debt Securities Availablefor Sale Short Term Investments Amortized Cost	0000080661-25-000023	1	monetary	I	D	Debt Securities, Available-for-Sale Short Term Investments, Amortized Cost	This item represents the cost of Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.
Equity Securities F V N I Common Equities	0000080661-25-000023	1	monetary	I	D	Equity Securities FV NI Common Equities	Fair value of common equities securities in the investment portfolio for which the change in fair value is recorded on the Income Statement as a holding period gain/(loss).
Non Insurance Service Revenues	0000080661-25-000023	1	monetary	D	C	Non Insurance Service Revenues	Revenue recognized for non-insurance services provided to customers.
Depreciation	us-gaap/2024	0	monetary	D	D	Depreciation	The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.
Earnings Per Share Basic	us-gaap/2024	0	perShare	D		Earnings Per Share, Basic	The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
Preferred Stock Dividends Per Share Declared	us-gaap/2024	0	perShare	D		Preferred Stock, Dividends Per Share, Declared	Aggregate dividends declared during the period for each share of preferred stock outstanding.
Increase Decrease In Accounts Payable And Accrued Liabilities	us-gaap/2024	0	monetary	D	D	Increase (Decrease) in Accounts Payable and Accrued Liabilities	The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.
Increase Decrease In Income Taxes	us-gaap/2024	0	monetary	D	D	Increase (Decrease) in Income Taxes	The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.
Increase Decrease In Reinsurance Recoverable	us-gaap/2024	0	monetary	D	C	Increase (Decrease) in Reinsurance Recoverable	The increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types.
Increase Decrease In Unearned Premiums	us-gaap/2024	0	monetary	D	D	Increase (Decrease) in Unearned Premiums	Amount of increase (decrease) unearned premiums written. Excludes portion of unearned premiums amortized into income.
Investment Income Investment Expense	us-gaap/2024	0	monetary	D	D	Investment Income, Investment Expense	Amount of expenses related to the generation of investment income.
Preferred Stock Dividends Income Statement Impact	us-gaap/2024	0	monetary	D	D	Preferred Stock Dividends, Income Statement Impact	The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.
Net Cash Provided By Used In Investing Activities	us-gaap/2024	0	monetary	D	D	Net Cash Provided by (Used in) Investing Activities	Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
Preferred Stock Shares Authorized	us-gaap/2024	0	shares	I		Preferred Stock, Shares Authorized	The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.
Reinsurance Recoverables On Paid And Unpaid Losses	us-gaap/2024	0	monetary	I	D	Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments	Amount, after valuation allowance, recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, policy benefits and policy reserves. Excludes premiums paid under reinsurance contracts.
Restricted Cash And Cash Equivalents	us-gaap/2024	0	monetary	I	D	Restricted Cash and Cash Equivalents	Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
Equity Securities F V N I Nonredeemable Preferred Stock	0000080661-25-000023	1	monetary	I	D	Equity Securities FV NI Nonredeemable Preferred Stock	Fair Value of Nonredeemable Preferred Stocks in the investment portfolio for which the change in fair value is recorded on the income statement as a holding period gain/(loss).
Accretion Amortization Of Discounts And Premiums Investments	us-gaap/2024	0	monetary	D	C	Accretion (Amortization) of Discounts and Premiums, Investments	The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.
Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	us-gaap/2024	0	monetary	I	C	Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value	us-gaap/2024	0	monetary	D	C	APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.
Debt And Equity Securities Gain Loss	us-gaap/2024	0	monetary	D	C	Debt and Equity Securities, Gain (Loss)	Amount of unrealized and realized gain (loss) on investment in debt and equity securities.
Non Insurance Service Expenses	0000080661-25-000023	1	monetary	D	D	Non Insurance Service Expenses	Expenses associated with non-insurance services provided to customers.
Payments Of Dividends Common Stock	us-gaap/2024	0	monetary	D	C	Payments of Ordinary Dividends, Common Stock	Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax	us-gaap/2024	0	monetary	I	C	AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.
Debt And Equity Securities Unrealized Gain Loss	us-gaap/2024	0	monetary	D	C	Debt and Equity Securities, Unrealized Gain (Loss)	Amount of unrealized gain (loss) on investment in debt and equity securities.
Increase Decrease In Deferred Policy Acquisition Costs	us-gaap/2024	0	monetary	D	C	Increase (Decrease) in Deferred Policy Acquisition Costs	The increase (decrease) during the reporting period in the balance sheet value of capitalized sales costs that are associated with acquiring a new insurance customers.
Investments	us-gaap/2024	0	monetary	I	D	Investments	Sum of the carrying amounts as of the balance sheet date of all investments.
Other Assets	us-gaap/2024	0	monetary	I	D	Other Assets	Amount of assets classified as other.
Payments Of Dividends Preferred Stock And Preference Stock	us-gaap/2024	0	monetary	D	C	Payments of Ordinary Dividends, Preferred Stock and Preference Stock	Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.
Property Plant And Equipment Net	us-gaap/2024	0	monetary	I	D	Property, Plant and Equipment, Net	Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
Treasury Stock Common Shares	us-gaap/2024	0	shares	I		Treasury Stock, Common, Shares	Number of previously issued common shares repurchased by the issuing entity and held in treasury.
Treasury Stock Value Acquired Cost Method	us-gaap/2024	0	monetary	D	D	Treasury Stock, Value, Acquired, Cost Method	Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
Weighted Average Number Of Shares Outstanding Basic	us-gaap/2024	0	shares	D		Weighted Average Number of Shares Outstanding, Basic	Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
Equity Securities Nonredeemable Preferred Stock Cost	0000080661-25-000023	1	monetary	I	D	Equity Securities Nonredeemable Preferred Stock Cost	Equity Securities Nonredeemable Preferred Stock Cost

Description

Field Name	Field Description
tag	The unique identifier (name) for a tag in a specific taxonomy release.
version	For a standard tag, an identifier for the taxonomy; otherwise the accession number where the tag was defined.
custom	1 if tag is custom (version=adsh), 0 if it is standard. Note: This flag is technically redundant with the version and adsh columns.
abstract	1 if the tag is not used to represent a numeric fact.
datatype	If abstract=1, then NULL, otherwise the data type (e.g., monetary) for the tag.
iord	If abstract=1, then NULL; otherwise, “I” if the value is a point-in time, or “D” if the value is a duration.
crdr	If datatype = monetary, then the tag’s natural accounting balance (debit or credit); if not defined, then NULL.
tlabel	If a standard tag, then the label text provided by the taxonomy, otherwise the text provided by the filer. A tag which had neither would have a NULL value here.
doc	The detailed definition for the tag. If a standard tag, then the text provided by the taxonomy, otherwise the text assigned by the filer. Some tags have neither, and this field is NULL.

Presentation of Statements

adsh	report	line	stmt	inpth	rfile	tag	version	plabel	negating
0000080661-25-000023	2	2	IS	0	H	Premiums Earned Net	us-gaap/2024	Net premiums earned	0
0000080661-25-000023	2	3	IS	0	H	Interest And Dividend Income Operating	us-gaap/2024	Investment income	0
0000080661-25-000023	2	5	IS	0	H	Debt And Equity Securities Realized Gain Loss	us-gaap/2024	Net realized gains (losses) on security sales	0
0000080661-25-000023	2	6	IS	0	H	Debt And Equity Securities Unrealized Gain Loss	us-gaap/2024	Net holding period gains (losses) on securities	0
0000080661-25-000023	2	7	IS	0	H	Debt And Equity Securities Gain Loss	us-gaap/2024	Total net realized gains (losses) on securities	0
0000080661-25-000023	2	8	IS	0	H	Fees And Other Revenues	0000080661-25-000023	Fees and other revenues	0
0000080661-25-000023	2	9	IS	0	H	Non Insurance Service Revenues	0000080661-25-000023	Service revenues	0
0000080661-25-000023	2	10	IS	0	H	Revenues	us-gaap/2024	Total revenues	0
0000080661-25-000023	2	12	IS	0	H	Policyholder Benefits And Claims Incurred Net	us-gaap/2024	Losses and loss adjustment expenses	0
0000080661-25-000023	2	13	IS	0	H	Deferred Policy Acquisition Cost Amortization Expense	us-gaap/2024	Policy acquisition costs	0
0000080661-25-000023	2	14	IS	0	H	Other Underwriting Expense	us-gaap/2024	Other underwriting expenses	0
0000080661-25-000023	2	15	IS	0	H	Investment Income Investment Expense	us-gaap/2024	Investment expenses	0
0000080661-25-000023	2	16	IS	0	H	Non Insurance Service Expenses	0000080661-25-000023	Service expenses	0
0000080661-25-000023	2	17	IS	0	H	Interest Expense Debt	us-gaap/2024	Interest expense	0
0000080661-25-000023	2	18	IS	0	H	Benefits Losses And Expenses	us-gaap/2024	Total expenses	0
0000080661-25-000023	2	20	IS	0	H	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest	us-gaap/2024	Income before income taxes	0
0000080661-25-000023	2	21	IS	0	H	Income Tax Expense Benefit	us-gaap/2024	Provision for income taxes	0
0000080661-25-000023	2	22	IS	0	H	Net Income Loss	us-gaap/2024	Net income	0
0000080661-25-000023	2	24	IS	0	H	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	us-gaap/2024	Decrease (increase) in total net unrealized losses on fixed-maturity securities	0
0000080661-25-000023	2	25	IS	0	H	Comprehensive Income Net Of Tax	us-gaap/2024	Comprehensive income (loss)	0
0000080661-25-000023	2	27	IS	0	H	Net Income Loss	us-gaap/2024	Net income	0
0000080661-25-000023	2	28	IS	0	H	Preferred Stock Dividends Income Statement Impact	us-gaap/2024	Less: Preferred share dividends and other	0
0000080661-25-000023	2	29	IS	0	H	Net Income Loss Available To Common Stockholders Basic	us-gaap/2024	Net income available to common shareholders	0
0000080661-25-000023	2	30	IS	0	H	Weighted Average Number Of Shares Outstanding Basic	us-gaap/2024	Average common shares outstanding - Basic (in shares)	0
0000080661-25-000023	2	31	IS	0	H	Weighted Average Number Diluted Shares Outstanding Adjustment	us-gaap/2024	Net effect of dilutive stock-based compensation (in shares)	0
0000080661-25-000023	2	32	IS	0	H	Weighted Average Number Of Diluted Shares Outstanding	us-gaap/2024	Total average equivalent common shares - Diluted (in shares)	0
0000080661-25-000023	2	33	IS	0	H	Earnings Per Share Basic	us-gaap/2024	Basic: Earnings per common shares (in dollars per share)	0
0000080661-25-000023	2	34	IS	0	H	Earnings Per Share Diluted	us-gaap/2024	Diluted: Earnings per common share (in dollars per share)	0
0000080661-25-000023	3	2	BS	0	H	Debt Securities Availableforsale Fixed Maturities	0000080661-25-000023	Fixed maturities (amortized cost: $77,754, $65,949, and $77,126)	0
0000080661-25-000023	3	3	BS	0	H	Short Term Investments	us-gaap/2024	Short-term investments (amortized cost: $2,595, $1,327, and $615)	0
0000080661-25-000023	3	4	BS	0	H	Available For Sale Securities Debt Securities	us-gaap/2024	Total available-for-sale securities	0
0000080661-25-000023	3	5	BS	0	H	Equity Securities F V N I Nonredeemable Preferred Stock	0000080661-25-000023	Nonredeemable preferred stocks (cost: $608, $931, and $756)	0
0000080661-25-000023	3	6	BS	0	H	Equity Securities F V N I Common Equities	0000080661-25-000023	Common equities (cost: $774, $708, and $745)	0
0000080661-25-000023	3	7	BS	0	H	Equity Securities Fv Ni	us-gaap/2024	Total equity securities	0
0000080661-25-000023	3	8	BS	0	H	Investments	us-gaap/2024	Total investments	0
0000080661-25-000023	3	9	BS	0	H	Cash	us-gaap/2024	Cash and cash equivalents	0
0000080661-25-000023	3	10	BS	0	H	Restricted Cash And Cash Equivalents	us-gaap/2024	Restricted cash and cash equivalents	0
0000080661-25-000023	3	11	BS	0	H	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	us-gaap/2024	Total cash, cash equivalents, restricted cash, and restricted cash equivalents	0
0000080661-25-000023	3	12	BS	0	H	Accrued Investment Income Receivable	us-gaap/2024	Accrued investment income	0
0000080661-25-000023	3	13	BS	0	H	Premiums Receivable At Carrying Value	us-gaap/2024	Premiums receivable, net of allowance for credit losses of $473, $328, and $460	0
0000080661-25-000023	3	14	BS	0	H	Reinsurance Recoverables On Paid And Unpaid Losses	us-gaap/2024	Reinsurance recoverables	0
0000080661-25-000023	3	15	BS	0	H	Prepaid Reinsurance Premiums	us-gaap/2024	Prepaid reinsurance premiums	0
0000080661-25-000023	3	16	BS	0	H	Deferred Policy Acquisition Costs	us-gaap/2024	Deferred acquisition costs	0
0000080661-25-000023	3	17	BS	0	H	Property Plant And Equipment Net	us-gaap/2024	Property and equipment, net of accumulated depreciation of $1,490, $1,580, and $1,461	0
0000080661-25-000023	3	18	BS	0	H	Deferred Income Tax Assets Net	us-gaap/2024	Net federal deferred income taxes	0
0000080661-25-000023	3	19	BS	0	H	Other Assets	us-gaap/2024	Other assets	0
0000080661-25-000023	3	20	BS	0	H	Assets	us-gaap/2024	Total assets	0
0000080661-25-000023	3	22	BS	0	H	Unearned Premiums	us-gaap/2024	Unearned premiums	0
0000080661-25-000023	3	23	BS	0	H	Liability For Claims And Claims Adjustment Expense	us-gaap/2024	Loss and loss adjustment expense reserves	0
0000080661-25-000023	3	24	BS	0	H	Accounts Payable And Accrued Liabilities Current And Noncurrent	us-gaap/2024	Accounts payable, accrued expenses, and other liabilities	0
0000080661-25-000023	3	25	BS	0	H	Debt Longterm And Shortterm Combined Amount	us-gaap/2024	Debt	0
0000080661-25-000023	3	26	BS	0	H	Liabilities	us-gaap/2024	Total liabilities	0
0000080661-25-000023	3	28	BS	0	H	Common Stock Value Outstanding	us-gaap/2024	Common shares, $1.00 par value (authorized 900; issued 798, including treasury shares of 212)	0
0000080661-25-000023	3	29	BS	0	H	Additional Paid In Capital Common Stock	us-gaap/2024	Paid-in capital	0
0000080661-25-000023	3	30	BS	0	H	Retained Earnings Accumulated Deficit	us-gaap/2024	Retained earnings	0
0000080661-25-000023	3	32	BS	0	H	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax	us-gaap/2024	Net unrealized gains (losses) on fixed-maturity securities	0
0000080661-25-000023	3	33	BS	0	H	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax	us-gaap/2024	Net unrealized losses on forecasted transactions	0
0000080661-25-000023	3	34	BS	0	H	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	us-gaap/2024	Foreign currency translation adjustment	0
0000080661-25-000023	3	35	BS	0	H	Accumulated Other Comprehensive Income Loss Net Of Tax	us-gaap/2024	Total accumulated other comprehensive income (loss)	0
0000080661-25-000023	3	36	BS	0	H	Stockholders Equity	us-gaap/2024	Total shareholders equity	0
0000080661-25-000023	3	37	BS	0	H	Liabilities And Stockholders Equity	us-gaap/2024	Total liabilities and shareholders equity	0
0000080661-25-000023	4	1	BS	1	H	Debt Securities Availablefor Sale Fixed Maturities Amortized Cost	0000080661-25-000023	Fixed maturities, amortized cost	0
0000080661-25-000023	4	2	BS	1	H	Debt Securities Availablefor Sale Short Term Investments Amortized Cost	0000080661-25-000023	Short-term investments, amortized cost	0
0000080661-25-000023	4	3	BS	1	H	Equity Securities Nonredeemable Preferred Stock Cost	0000080661-25-000023	Nonredeemable preferred stocks, cost	0
0000080661-25-000023	4	4	BS	1	H	Equity Securities Common Equities Cost	0000080661-25-000023	Common equities, cost	0
0000080661-25-000023	4	5	BS	1	H	Premiums Receivable Allowance For Doubtful Accounts	us-gaap/2024	Premium receivable, allowance for credit loss	0
0000080661-25-000023	4	6	BS	1	H	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment	us-gaap/2024	Property and equipment, accumulated depreciation	0
0000080661-25-000023	4	7	BS	1	H	Common Stock Par Or Stated Value Per Share	us-gaap/2024	Common shares, par value (USD per share)	0
0000080661-25-000023	4	8	BS	1	H	Common Stock Shares Authorized	us-gaap/2024	Common shares, authorized (shares)	0
0000080661-25-000023	4	9	BS	1	H	Common Stock Shares Issued	us-gaap/2024	Common shares, issued (shares)	0
0000080661-25-000023	4	10	BS	1	H	Treasury Stock Common Shares	us-gaap/2024	Treasury shares (shares)	0
0000080661-25-000023	5	14	EQ	0	H	Common Stock Par Or Stated Value Per Share	us-gaap/2024	Common shares, par value (USD per share)	0
0000080661-25-000023	5	15	EQ	0	H	Common Stock Dividends Per Share Declared	us-gaap/2024	Cash dividends declared on common stock (in dollars per share)	0
0000080661-25-000023	5	16	EQ	0	H	Preferred Stock Dividends Per Share Declared	us-gaap/2024	Cash dividends declared on Serial Preferred Shares, Series B (in dollars per share)	0
0000080661-25-000023	5	17	EQ	0	H	Preferred Stock Shares Authorized	us-gaap/2024	Preferred stock, shares authorized (shares)	0
0000080661-25-000023	5	18	EQ	0	H	Preferred Stock Shares Issued	us-gaap/2024	Preferred stock, shares issued (shares)	0
0000080661-25-000023	5	20	EQ	0	H	Stockholders Equity	us-gaap/2024	Balance, Beginning of period	0
0000080661-25-000023	5	21	EQ	0	H	Preferred Stock Redemption Amount Excluding Dividends And Underwriters Fees	0000080661-25-000023	Redemption of Serial Preferred Shares, Series B	1
0000080661-25-000023	5	22	EQ	0	H	Treasury Stock Value Acquired Cost Method	us-gaap/2024	Treasury shares purchased	1
0000080661-25-000023	5	23	EQ	0	H	Stock Issued During Period Value Restricted Stock Award Gross	us-gaap/2024	Net restricted equity awards issued/vested	0
0000080661-25-000023	5	24	EQ	0	H	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value	us-gaap/2024	Amortization of equity-based compensation	0
0000080661-25-000023	5	25	EQ	0	H	Dividends Share Based Compensation	us-gaap/2024	Reinvested dividends on restricted stock units	1
0000080661-25-000023	5	26	EQ	0	H	Net Income Loss	us-gaap/2024	Net income	0
0000080661-25-000023	5	27	EQ	0	H	Dividends Common Stock Cash	us-gaap/2024	Cash dividends declared on common shares ($0.10 and $0.10 per share)	1
0000080661-25-000023	5	28	EQ	0	H	Dividends Preferred Stock Cash	us-gaap/2024	Cash dividends declared on Serial Preferred Shares, Series B ($0 and $15.688377 per share)	1
0000080661-25-000023	5	29	EQ	0	H	Stockholders Equity Other	us-gaap/2024	Other, net	1
0000080661-25-000023	5	30	EQ	0	H	Other Comprehensive Income Loss Net Of Tax	us-gaap/2024	Other comprehensive income (loss)	0
0000080661-25-000023	5	31	EQ	0	H	Stockholders Equity	us-gaap/2024	Balance, End of period	0
0000080661-25-000023	6	2	CF	0	H	Net Income Loss	us-gaap/2024	Net income	0
0000080661-25-000023	6	4	CF	0	H	Depreciation	us-gaap/2024	Depreciation	0
0000080661-25-000023	6	5	CF	0	H	Accretion Amortization Of Discounts And Premiums Investments	us-gaap/2024	Net amortization (accretion) of fixed-income securities	1
0000080661-25-000023	6	6	CF	0	H	Restricted Stock Expense	us-gaap/2024	Amortization of equity-based compensation	0
0000080661-25-000023	6	7	CF	0	H	Realized Investment Gains Losses	us-gaap/2024	Net realized (gains) losses on securities	1
0000080661-25-000023	6	8	CF	0	H	Gain Loss On Sale Of Property Plant Equipment	us-gaap/2024	Net (gains) losses on disposition of property and equipment	1
0000080661-25-000023	6	10	CF	0	H	Increase Decrease In Premiums Receivable	us-gaap/2024	Premiums receivable	1
0000080661-25-000023	6	11	CF	0	H	Increase Decrease In Reinsurance Recoverable	us-gaap/2024	Reinsurance recoverables	1
0000080661-25-000023	6	12	CF	0	H	Increase Decrease In Prepaid Reinsurance Premiums	us-gaap/2024	Prepaid reinsurance premiums	1
0000080661-25-000023	6	13	CF	0	H	Increase Decrease In Deferred Policy Acquisition Costs	us-gaap/2024	Deferred acquisition costs	1
0000080661-25-000023	6	14	CF	0	H	Increase Decrease In Income Taxes	us-gaap/2024	Income taxes	0
0000080661-25-000023	6	15	CF	0	H	Increase Decrease In Unearned Premiums	us-gaap/2024	Unearned premiums	0
0000080661-25-000023	6	16	CF	0	H	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve	us-gaap/2024	Loss and loss adjustment expense reserves	0
0000080661-25-000023	6	17	CF	0	H	Increase Decrease In Accounts Payable And Accrued Liabilities	us-gaap/2024	Accounts payable, accrued expenses, and other liabilities	0
0000080661-25-000023	6	18	CF	0	H	Increase Decrease In Other Operating Capital Net	us-gaap/2024	Other, net	1
0000080661-25-000023	6	19	CF	0	H	Net Cash Provided By Used In Operating Activities	us-gaap/2024	Net cash provided by operating activities	0
0000080661-25-000023	6	22	CF	0	H	Payments To Acquire Available For Sale Securities Debt	us-gaap/2024	Fixed maturities	1
0000080661-25-000023	6	23	CF	0	H	Payments To Acquire Equity Securities Fv Ni	us-gaap/2024	Equity securities	1
0000080661-25-000023	6	25	CF	0	H	Proceeds From Sale Of Available For Sale Securities Debt	us-gaap/2024	Fixed maturities	0
0000080661-25-000023	6	26	CF	0	H	Proceeds From Sale Of Equity Securities Fv Ni	us-gaap/2024	Equity securities	0
0000080661-25-000023	6	28	CF	0	H	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities	us-gaap/2024	Fixed maturities	0
0000080661-25-000023	6	29	CF	0	H	Proceeds From Maturities Prepayments And Calls Of Equity Securities F V N I	0000080661-25-000023	Equity securities	0
0000080661-25-000023	6	30	CF	0	H	Payments For Proceeds From Short Term Investments	us-gaap/2024	Net (purchases) sales of short-term investments	1
0000080661-25-000023	6	31	CF	0	H	Proceeds From Payables To Broker Dealers Investing Activities	0000080661-25-000023	Net change in unsettled security transactions	0
0000080661-25-000023	6	32	CF	0	H	Payments To Acquire Property Plant And Equipment	us-gaap/2024	Purchases of property and equipment	1
0000080661-25-000023	6	33	CF	0	H	Proceeds From Sale Of Property Plant And Equipment	us-gaap/2024	Sales of property and equipment	0
0000080661-25-000023	6	34	CF	0	H	Net Cash Provided By Used In Investing Activities	us-gaap/2024	Net cash used in investing activities	0
0000080661-25-000023	6	36	CF	0	H	Payments Of Dividends Common Stock	us-gaap/2024	Dividends paid to common shareholders	1
0000080661-25-000023	6	37	CF	0	H	Paymentsfor Repurchaseof Common Stockfor Restricted Stock Tax Liabilities	0000080661-25-000023	Acquisition of treasury shares for equity award tax liabilities	1
0000080661-25-000023	6	38	CF	0	H	Payments For Repurchase Of Preferred Stock And Preference Stock	us-gaap/2024	Redemption of preferred shares	1
0000080661-25-000023	6	39	CF	0	H	Payments Of Dividends Preferred Stock And Preference Stock	us-gaap/2024	Dividends paid to preferred shareholders	1
0000080661-25-000023	6	40	CF	0	H	Net Cash Provided By Used In Financing Activities	us-gaap/2024	Net cash used in financing activities	0
0000080661-25-000023	6	41	CF	0	H	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect	us-gaap/2024	Increase in cash, cash equivalents, restricted cash, and restricted cash equivalents	0
0000080661-25-000023	6	42	CF	0	H	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	us-gaap/2024	Cash, cash equivalents, restricted cash, and restricted cash equivalents January 1	0
0000080661-25-000023	6	43	CF	0	H	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents	us-gaap/2024	Cash, cash equivalents, restricted cash, and restricted cash equivalents March 31	0

Description

Field Name	Field Description
adsh	Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission.
report	Represents the report grouping. This field corresponds to the statement (stmt) field, which indicates the type of statement. The numeric value refers to the “R file” as posted on the EDGAR Web site.
line	Represents the tag’s presentation line order for a given report. Together with the statement and report field, presentation location, order and grouping can be derived.
stmt	The financial statement location to which the value of the “report” field pertains.
inpth	Value was presented “parenthetically” instead of in columns within the financial statements. For example: Receivables (net of allowance for bad debts of $200 in 2012) $700.
rfile	The type of interactive data file rendered on the EDGAR web site, H = .htm file, X = .xml file.
tag	The tag chosen by the filer for this line item.
version	The taxonomy identifier if the tag is a standard tag, otherwise adsh.
plabel	The text presented on the line item, also known as a “preferred” label.
negating	Flag to indicate whether the plabel is negating.