0001042046-25-000020 |
20240331 |
Increase Decrease In Other Operating Liabilities |
-42000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Accumulated Other Comprehensive Income Loss Net Of Tax |
-240000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Additional Paid In Capital Common Stock |
1409000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20241231 |
Assets |
4923000000.0000 |
USD |
0 |
us-gaap/2024 |
Business Segments= Corporate And Other; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
3542000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
10687000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
176000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
3514000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
237000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
237000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
1241000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2117000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
4000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2118000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Common Stock No Par Value |
0.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Common Stock Shares Outstanding |
83668453.0000 |
shares |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Common Stock Value |
84000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Comprehensive Income Net Of Tax |
215000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
20000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Equity Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
-1000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Tax Effects; |
|
|
0001042046-25-000020 |
20231231 |
Debt Securities Available For Sale Allowance For Credit Loss |
3000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
34000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
23000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20240331 |
Depreciation Amortization And Accretion Net |
20000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Dividends Common Stock Cash |
234000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Earnings Per Share Basic |
1.8400 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Equity Method Investments |
804000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Private Equity Funds; |
|
|
0001042046-25-000020 |
20241231 |
Equity Method Investments |
1392000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Real Estate Related Investments; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
751000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Equity Securities; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
770000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
297000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
770000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Equity Securities; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
429000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Preferred Stock; |
|
|
0001042046-25-000020 |
20250331 |
Expenses Of Managed Investment Entities |
68000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20241231 |
Goodwill |
305000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve |
162000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
657000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
250000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Senior Notes Due In April2030; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
121000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In March2059; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
790000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Estimate Of Fair Value Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20240331 |
Net Income Loss |
242000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Other Assets |
1375000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax |
61000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax |
-3000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
61000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20240331 |
Other Cost And Expense Operating |
76000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Cost And Expense Operating |
77000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
502000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
965000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
965000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20240331 |
Premiums Earned Net |
243000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Payments For Trading Securities |
7000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Reinsurance Recoverables On Paid And Unpaid Losses |
5176000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Selling General And Administrative Expense |
486000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Selling General And Administrative Expense |
238000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
1456000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-22000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
3089000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
4466000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Employee Benefit Plan |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
4000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Trading Securities Debt |
71000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Unearned Premiums |
3584000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Assets |
10000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20240331 |
Weighted Average Number Of Diluted Shares Outstanding |
83800000.0000 |
shares |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
10788000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
2356000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
10398000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2381000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
1000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
875000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20240331 |
Benefits Losses And Expenses |
1602000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents |
1276000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Common Stock Shares Authorized |
200000000.0000 |
shares |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Common Stock Shares Outstanding |
83978258.0000 |
shares |
0 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
14000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
0.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Mortgage Loans And Other Investments; |
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
3000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Pretax; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
6000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
4000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20250331 |
Dividends Common Stock Cash |
234000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Equity Method Investments |
815000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Private Equity Funds; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
751000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
415000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Preferred Stock; |
|
|
0001042046-25-000020 |
20250331 |
Increase Decrease In Reinsurance Payables |
-163000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Liability For Claims And Claims Adjustment Expense |
13970000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
121000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In March2059; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
1261000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
790000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Net Cash Provided By Used In Financing Activities |
-495000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Net Investment Income |
198000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Operating Income Loss |
197000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Net Of Tax |
61000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Net Of Tax |
-6000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Receivables |
855000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments Of Dividends Common Stock |
233000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments To Acquire Mortgage Notes Receivable |
89000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments To Acquire Other Investments |
27000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
912000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
536000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
311000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Premiums Earned Net |
1580000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Premiums Earned Net |
286000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Payments For Trading Securities |
0.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Retained Earnings Unappropriated |
3078000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Selling General And Administrative Expense |
530000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-17000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Translation Adjustment; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-240000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-30000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Translation Adjustment; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Employee Benefit Plan |
15657.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Shares Restricted Stock Award Forfeited |
5172.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Dividend Reinvestment Plan |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Employee Benefit Plan |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Stock Options Exercised |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased And Retired During Period Shares |
462398.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
6000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Weighted Average Number Of Diluted Shares Outstanding |
83800000.0000 |
shares |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Weighted Average Number Of Shares Outstanding Basic |
83700000.0000 |
shares |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Weighted Average Number Of Shares Outstanding Basic |
83800000.0000 |
shares |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
2122000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
2223000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
921000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
3014000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
470000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
237000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
859000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
858000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
173000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
3496000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
3491000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
748000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
1241000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
3491000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
10568000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
241000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20240331 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents |
1087000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Changein Managed Investment Entities Assets And Liabilities |
124000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20231231 |
Common Stock Shares Outstanding |
83635807.0000 |
shares |
0 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Comprehensive Income Net Of Tax |
246000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
3000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
11000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Structured Securities; |
|
|
0001042046-25-000020 |
20240331 |
Dividends Common Stock Cash |
269000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Earnings Per Share Diluted |
1.8400 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Equity Method Investments |
1429000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Real Estate Related Investments; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
419000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Increase Decreasein Reinsuranceand Other Receivables |
-349000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Increase Decrease In Reinsurance Payables |
-108000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Interest Expense |
19000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Interest Expense |
19000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
249000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Senior Notes Due In April2030; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
195000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debenturesduein December2059; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
566000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Senior Notes Due In June2047; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Other Operating Activities Cash Flow Statement |
7000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
791000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20240331 |
Net Income Loss |
242000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20240331 |
Operating Income Loss |
304000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax |
5000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Income |
27000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments To Acquire Available For Sale Securities Debt |
408000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
98000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
0.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Other Lines; |
|
|
0001042046-25-000020 |
20250331 |
Premiums Receivable At Carrying Value |
1589000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Prepaid Reinsurance Premiums |
1105000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities |
441000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Sale And Maturity Of Other Investments |
5000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Sale Of Equity Securities Fv Ni |
56000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Revenues |
1906000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Revenues |
1856000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity |
4466000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-17000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-315000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
4240000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-141000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Net Unrealized Investment Gain Loss; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Shares Dividend Reinvestment Plan |
8253.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Dividend Reinvestment Plan |
7020.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Stock Options Exercised |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased And Retired During Period Value |
0.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased And Retired During Period Value |
49000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
1000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20241231 |
Trading Securities Debt |
76000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Trading Securities Debt |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Trading Securities Debt |
26000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Unearned Premiums |
3710000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Assets |
12000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-319000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20241231 |
Assets |
30836000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Assets |
30294000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Assets |
4590000000.0000 |
USD |
0 |
us-gaap/2024 |
Business Segments= Corporate And Other; |
|
|
0001042046-25-000020 |
20250331 |
Assets |
25704000000.0000 |
USD |
0 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
51000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
905000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
10788000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
2060000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
51000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
3496000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
9445000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
10568000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2100000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
281000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
12000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
871000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20231231 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents |
1225000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect |
-130000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Common Stock Shares Outstanding |
83857354.0000 |
shares |
0 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Common Stock Shares Outstanding |
83668453.0000 |
shares |
0 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
9000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Equity Securities; |
|
|
0001042046-25-000020 |
20231231 |
Debt Securities Available For Sale Allowance For Credit Loss |
12000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Debt Securities Available For Sale Allowance For Credit Loss |
11000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Structured Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
1000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Deferred Policy Acquisition Costs And Value Of Business Acquired |
320000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Deferred Policy Acquisition Costs And Value Of Business Acquired |
316000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Earnings Per Share Diluted |
2.8900 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Equity Method Investments |
2277000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Equity Method Investments |
82000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Private Debt Funds; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
292000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Gain Losson Changein Fair Valueof Assetsand Liabilitiesof Managed Investment Entities |
-3000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Liability For Claims And Claims Adjustment Expense |
13050000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
1475000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
3000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Other Longterm Debt; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
195000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In September2060; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
1273000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
1276000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Estimate Of Fair Value Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
1476000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
827000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20240331 |
Net Cash Provided By Used In Financing Activities |
-90000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Net Income Loss |
154000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Net Investment Income |
205000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Net Investment Income |
173000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Net Investment Income |
170000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20240331 |
Other Income |
39000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Income |
3000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Payments For Proceeds From Other Investing Activities |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments To Acquire Equity Securities Fv Ni |
11000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments To Acquire Mortgage Notes Receivable |
61000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Premiums Earned Net |
1546000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20240331 |
Premiums Earned Net |
783000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20240331 |
Premiums Earned Net |
520000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Premiums Earned Net |
1580000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Premiums Earned Net |
794000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Purchases Of Investments By Managed Investment Entities |
500000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Purchases Of Real Estate Property And Equipment |
25000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Realized Investment Gains Losses |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Retained Earnings Unappropriated |
3211000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Selling General And Administrative Expense |
112000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Selling General And Administrative Expense |
131000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-287000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Net Unrealized Investment Gain Loss; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
3121000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-278000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Net Unrealized Investment Gain Loss; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
4392000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Shares Employee Benefit Plan |
15804.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Restricted Stock Award Forfeited |
12504.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased And Retired During Period Shares |
0.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased And Retired During Period Value |
0.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased And Retired During Period Value |
9000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
1000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Trading Securities Debt |
71000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Assets |
419000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Liabilities |
3965000000.0000 |
USD |
0 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Liabilities |
402000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Liabilities |
3354000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20240331 |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
182000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
10398000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
51000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
185000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1989000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
2356000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
859000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
1240000000.0000 |
USD |
0 |
us-gaap/2024 |
Debt Instrument= Managedby Third Parties; Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
241000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
180000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2381000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
180000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20240331 |
Common Stock Dividends Per Share Declared |
3.2100 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Common Stock No Par Value |
0.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Common Stock Value |
84000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20240331 |
Earnings Per Share Basic |
2.8900 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
40000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
336000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
434000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
39000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20240331 |
Income Tax Expense Benefit |
62000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Increase Decrease In Other Operating Assets |
-24000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Liabilities |
26370000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Liabilities And Stockholders Equity |
30294000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
1475000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
146000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In June2060; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
819000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
657000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
791000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Net Cash Provided By Used In Investing Activities |
-155000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Net Income Loss |
154000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax |
0.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax |
55000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Income |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20241231 |
Other Liabilities |
1976000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments Of Dividends Common Stock |
268000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments To Acquire Available For Sale Securities Debt |
529000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Premiums Earned Net |
1546000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Issuance Of Common Stock |
3000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Sale And Maturity Of Other Investments |
12000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Purchases Of Real Estate Property And Equipment |
38000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Retirement Of Managed Investment Entities Liabilities |
463000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Selling General And Administrative Expense |
154000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
2000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Defined Benefit Plans Adjustment; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-179000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Other Comprehensive Income; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
3078000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Shares Restricted Stock Award Gross |
157681.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Shares Stock Options Exercised |
92851.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Stock Options Exercised |
18932.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Employee Benefit Plan |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Assets |
4140000000.0000 |
USD |
0 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Liabilities |
11000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
4258000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-10000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-202000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Net Unrealized Investment Gain Loss; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
1495000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
3211000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Restricted Stock Award Gross |
166297.0000 |
shares |
1 |
us-gaap/2024 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Dividend Reinvestment Plan |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Stock Options Exercised |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased And Retired During Period Value |
0.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased And Retired During Period Value |
58000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Shares |
47870.0000 |
shares |
1 |
0001042046-25-000020 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20241231 |
Trading Securities Debt |
76000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Assets |
372000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Liabilities |
3553000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Liabilities |
3726000000.0000 |
USD |
0 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Liabilities |
361000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
296000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Asset Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
12000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
768000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
237000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
51000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1989000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
10568000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
192000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
2118000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20240331 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect |
-138000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Common Stock Shares Authorized |
200000000.0000 |
shares |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
14000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Pretax; |
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
-3000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Tax Effects; |
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
-6000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20240331 |
Debt Securities Available For Sale Allowance For Credit Loss |
11000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
30000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20240331 |
Dividends Common Stock Cash |
269000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
770000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Gain Losson Changein Fair Valueof Assetsand Liabilitiesof Managed Investment Entities |
10000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Income Tax Expense Benefit |
43000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Increase Decreasein Reinsuranceand Other Receivables |
71000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Investments And Cash |
15994000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
566000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Senior Notes Due In June2047; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
818000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
3000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
195000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In September2060; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
1476000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20240331 |
Selling General And Administrative Expense |
503000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
754000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
827000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Carrying Reported Amount Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20250331 |
Net Cash Provided By Used In Investing Activities |
23000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Assets |
1337000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax |
9000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax |
-5000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax |
-10000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax |
-2000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Net Of Tax |
-4000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Investments |
156000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Operating Activities Cash Flow Statement |
-15000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Sales And Redemptions Of Investments By Managed Investment Entities |
532000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Purchases Of Investments By Managed Investment Entities |
605000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Realized Investment Gains Losses |
14000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Reinsurance Payable |
1028000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Reinsurance Recoverables On Paid And Unpaid Losses |
4945000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Selling General And Administrative Expense |
220000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Casualty Insurance; |
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-17000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Translation Adjustment; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-33000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Translation Adjustment; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
1493000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Dividend Reinvestment Plan |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Shares |
42809.0000 |
shares |
1 |
0001042046-25-000020 |
Equity Components= Common Stock; |
|
|
0001042046-25-000020 |
20250331 |
Trading Securities Debt |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Trading Securities Debt |
58000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Assets |
3848000000.0000 |
USD |
0 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Variable Interest Entity Assets |
3464000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Additional Paid In Capital Common Stock |
1411000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
2412000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
1243000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
1250000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1240000000.0000 |
USD |
0 |
us-gaap/2024 |
Debt Instrument= Managedby Third Parties; Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1237000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1988000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Residential Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
173000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
10398000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
3017000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
462000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Corporate Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
875000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S States And Political Subdivisions; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
180000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= U S Treasury And Government; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Benefits Losses And Expenses |
1659000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Cash And Cash Equivalents At Carrying Value |
1406000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Changein Managed Investment Entities Assets And Liabilities |
-42000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20241231 |
Common Stock Shares Outstanding |
83978258.0000 |
shares |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
0.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Mortgage Loans And Other Investments; |
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
11000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Net Of Tax; |
|
|
0001042046-25-000020 |
20250331 |
Debt And Equity Securities Realized Gain Loss |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Net Of Tax; |
|
|
0001042046-25-000020 |
20231231 |
Debt Securities Available For Sale Allowance For Credit Loss |
9000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Structured Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
6000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
4000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20250331 |
Depreciation Amortization And Accretion Net |
22000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Equity Method Investments |
81000000.0000 |
USD |
0 |
us-gaap/2024 |
Schedule Of Equity Method Investment Equity Method Investee Name= Equity Method Investments Private Debt Funds; |
|
|
0001042046-25-000020 |
20250331 |
Equity Method Investments |
2326000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Equity Securities Fv Ni |
341000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Common Stock; |
|
|
0001042046-25-000020 |
20240331 |
Expenses Of Managed Investment Entities |
92000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Increase Decrease In Other Operating Assets |
-57000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Increase Decrease In Other Operating Liabilities |
-15000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Investment Income Of Managed Investment Entities |
99000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Investment Income Of Managed Investment Entities |
76000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20241231 |
Investments And Cash |
15852000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Liabilities |
25902000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Liability For Claims And Claims Adjustment Expense |
14179000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Long Term Debt |
146000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debentures Due In June2060; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level1; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
3000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
754000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Estimate Of Fair Value Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax |
3000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
61000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20241231 |
Other Investments |
153000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments For Proceeds From Other Investing Activities |
0.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments For Repurchase Of Common Stock |
0.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments To Acquire Other Investments |
65000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Other Lines; |
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
306000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|
0001042046-25-000020 |
20250331 |
Premiums Earned Net |
500000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|
0001042046-25-000020 |
20241231 |
Prepaid Reinsurance Premiums |
1013000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Issuance Of Common Stock |
6000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Issuance Of Managed Investment Entities |
764000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Sale And Collection Of Mortgage Notes Receivable |
8000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Sale And Collection Of Mortgage Notes Receivable |
24000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Sale Of Available For Sale Securities Debt |
15000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Sale Of Equity Securities Fv Ni |
5000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Proceeds From Sales And Redemptions Of Investments By Managed Investment Entities |
718000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20241231 |
Reinsurance Payable |
1191000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity |
4392000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20231231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
2000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Defined Benefit Plans Adjustment; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
2000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Defined Benefit Plans Adjustment; |
|
|
0001042046-25-000020 |
20240331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
1466000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20241231 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
2000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Defined Benefit Plans Adjustment; |
|
|
0001042046-25-000020 |
20250331 |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest |
-7000000.0000 |
USD |
0 |
us-gaap/2024 |
Equity Components= Accumulated Gain Loss Net Cash Flow Hedge Parent; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Shares Restricted Stock Award Gross |
166297.0000 |
shares |
1 |
us-gaap/2024 |
Award Type= Restricted Stock; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Dividend Reinvestment Plan |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Common Stock Including Additional Paid In Capital; |
|
|
0001042046-25-000020 |
20250331 |
Stock Issued During Period Value Employee Benefit Plan |
2000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Issued During Period Value Stock Options Exercised |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20240331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
5000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Stock Repurchased Shares Exchanged In Stock Compensation Plans Value |
5000000.0000 |
USD |
1 |
0001042046-25-000020 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20241231 |
Trading Securities Debt |
50000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Trading Securities Debt |
13000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Assets |
3711000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20241231 |
Variable Interest Entity Liabilities |
10000000.0000 |
USD |
0 |
0001042046-25-000020 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Other Receivables |
1123000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Accumulated Other Comprehensive Income Loss Net Of Tax |
-179000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Assets |
25913000000.0000 |
USD |
0 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
10687000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Debt Securities Amortized Cost Basis |
236000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Foreign Government Debt Securities; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Debt Securities Amortized Cost Basis |
2420000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Asset Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1237000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Commercial Mortgage Backed Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level3; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
1237000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Collateralized Loan Obligations; |
|
|
0001042046-25-000020 |
20241231 |
Available For Sale Securities Debt Securities |
173000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= U S Treasury And Government; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
1241000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Collateralized Loan Obligations; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
9628000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Fixed Maturities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
241000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Foreign Government Debt Securities; Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20250331 |
Available For Sale Securities Debt Securities |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Commercial Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20250331 |
Cash And Cash Equivalents At Carrying Value |
1276000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents |
1406000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Common Stock Dividends Per Share Declared |
2.8000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Debt And Equity Securities Realized Gain Loss |
-6000000.0000 |
USD |
1 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20240331 |
Debt Securities Available For Sale Allowance For Credit Loss |
0.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Corporate Debt Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
34000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
1000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Residential Mortgage Backed Securities; |
|
|
0001042046-25-000020 |
20241231 |
Debt Securities Available For Sale Allowance For Credit Loss |
11000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Structured Securities; |
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Debt Securities Available For Sale Allowance For Credit Loss |
41000000.0000 |
USD |
0 |
us-gaap/2024 |
Financial Instrument= Fixed Maturities; |
|
|
0001042046-25-000020 |
20241231 |
Equity Securities Fv Ni |
751000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Asset Class= Equity Securities; |
|
|
0001042046-25-000020 |
20250331 |
Goodwill |
305000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve |
-83000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20241231 |
Liabilities And Stockholders Equity |
30836000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20231231 |
Liability For Claims And Claims Adjustment Expense |
13087000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
3000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Other Longterm Debt; Longterm Debt Type= Senior Notes; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
195000000.0000 |
USD |
0 |
us-gaap/2024 |
Consolidated Entities= Parent Company; Debt Instrument= Subordinated Debenturesduein December2059; Longterm Debt Type= Subordinated Debt; |
|
|
0001042046-25-000020 |
20250331 |
Long Term Debt |
1264000000.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Measurement Basis= Estimate Of Fair Value Fair Value Disclosure; |
|
|
0001042046-25-000020 |
20241231 |
Mortgage Loans On Real Estate Commercial And Consumer Net |
0.0000 |
USD |
0 |
us-gaap/2024 |
Fair Value By Fair Value Hierarchy Level= Fair Value Inputs Level2; |
|
|
0001042046-25-000020 |
20240331 |
Net Cash Provided By Used In Operating Activities |
107000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Net Cash Provided By Used In Operating Activities |
342000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Net Income Loss |
242000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Parent; |
|
|
0001042046-25-000020 |
20250331 |
Net Income Loss |
154000000.0000 |
USD |
1 |
us-gaap/2024 |
Equity Components= Retained Earnings; |
|
|
0001042046-25-000020 |
20250331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax |
1000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax |
-5000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Other Comprehensive Income Loss Net Of Tax |
4000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Other Liabilities |
1992000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Payments For Repurchase Of Common Stock |
58000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Payments To Acquire Equity Securities Fv Ni |
42000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Policyholder Benefits And Claims Incurred Net |
907000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Policyholder Benefits And Claims Incurred Net |
118000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Financial Insurance; |
|
|
0001042046-25-000020 |
20241231 |
Premiums Receivable At Carrying Value |
1532000000.0000 |
USD |
0 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Issuance Of Managed Investment Entities |
635000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities |
378000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20240331 |
Proceeds From Sale Of Available For Sale Securities Debt |
75000000.0000 |
USD |
1 |
us-gaap/2024 |
|
|
|
0001042046-25-000020 |
20250331 |
Retirement Of Managed Investment Entities Liabilities |
971000000.0000 |
USD |
1 |
0001042046-25-000020 |
|
|
|
0001042046-25-000020 |
20250331 |
Selling General And Administrative Expense |
521000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; |
|
|
0001042046-25-000020 |
20250331 |
Selling General And Administrative Expense |
152000000.0000 |
USD |
1 |
us-gaap/2024 |
Business Segments= Property And Casualty Insurance; Consolidation Items= Operating Segments; Subsegments= Specialty Property And Transportation Insurance; |
|
|