| Field | Row 1 |
|---|---|
| adsh | 0001558370-25-007346 |
| cik | 1022671 |
| name | STEEL DYNAMICS INC |
| sic | 3312 |
| countryba | US |
| stprba | IN |
| cityba | FORT WAYNE |
| zipba | 46804 |
| bas1 | 7575 W JEFFERSON BLVD |
| bas2 | |
| baph | 260 459 3553 |
| countryma | US |
| stprma | IN |
| cityma | FORT WAYNE |
| zipma | 46804 |
| mas1 | 7575 W JEFFERSON BLVD |
| mas2 | |
| countryinc | US |
| stprinc | IN |
| ein | 351929476 |
| former | |
| changed | |
| afs | 1-LAF |
| wksi | 0 |
| fye | 1231 |
| form | 10-Q |
| period | 20250331 |
| fy | 2025 |
| fp | Q1 |
| filed | 20250512 |
| accepted | 2025-05-12 15:01:00.0 |
| prevrpt | 0 |
| detail | 1 |
| instance | stld-20250331x10q_htm.xml |
| nciks | 1 |
| aciks |
| Field Name | Field Description |
|---|---|
| adsh | Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission. |
| cik | Central Index Key (CIK). Ten digit number assigned by the SEC to each registrant that submits filings. |
| name | Name of registrant. This corresponds to the name of the legal entity as recorded in EDGAR as of the filing date. |
| sic | Standard Industrial Classification (SIC). Four digit code assigned by the SEC as of the filing date, indicating the registrant’s type of business. |
| countryba | The ISO 3166-1 country of the registrant's business address. |
| stprba | The state or province of the registrant’s business address, if field countryba is US or CA. |
| cityba | The city of the registrant's business address. |
| zipba | The zip code of the registrant’s business address. |
| bas1 | The first line of the street of the registrant’s business address. |
| bas2 | The second line of the street of the registrant’s business address. |
| baph | The phone number of the registrant’s business address. |
| countryma | The ISO 3166-1 country of the registrant's mailing address. |
| stprma | The state or province of the registrant’s mailing address, if field countryma is US or CA. |
| cityma | The city of the registrant's mailing address. |
| zipma | The zip code of the registrant’s mailing address. |
| mas1 | The first line of the street of the registrant’s mailing address. |
| mas2 | The second line of the street of the registrant’s mailing address. |
| countryinc | The ISO 3166-1 country of incorporation for the registrant. |
| stprinc | The state or province of incorporation for the registrant, if countryinc is US or CA. |
| ein | Employee Identification Number, 9 digit identification number assigned by the Internal Revenue Service to business entities operating in the United States. |
| former | Most recent former name of the registrant, if any. |
| changed | Date of change from the former name, if any. |
| afs | Filer status with the SEC at the time of submission: 1-LAF=Large Accelerated, 2-ACC=Accelerated, 3-SRA=Smaller Reporting Accelerated, 4-NON=Non-Accelerated, 5-SML=Smaller Reporting Filer, NULL=not assigned. |
| wksi | Well Known Seasoned Issuer (WKSI). An issuer that meets specific SEC requirements at some point during a 60-day period preceding the date the issuer satisfies its obligation to update its shelf registration statement. |
| fye | Fiscal Year End Date, rounded to nearest month-end. |
| form | The submission type of the registrant’s filing. |
| period | Balance Sheet Date, rounded to nearest month-end. |
| fy | Fiscal Year Focus (as defined in the EDGAR XBRL Guide Ch. 3.1.8). |
| fp | Fiscal Period Focus (as defined in the EDGAR XBRL Guide Ch. 3.1.8) within Fiscal Year. |
| filed | The date of the registrant’s filing with the Commission. |
| accepted | The acceptance date and time of the registrant’s filing with the Commission. |
| prevrpt | Previous Report – TRUE indicates that the submission information was subsequently amended. |
| detail | TRUE indicates that the XBRL submission contains quantitative disclosures within the footnotes and schedules at the required detail level (e.g., each amount). |
| instance | The name of the submitted XBRL Instance Document. The name often begins with the company ticker symbol. |
| nciks | Number of Central Index Keys (CIK) of registrants (i.e., business units) included in the consolidating entity’s submitted filing. |
| aciks | Additional CIKs of co-registrants included in a consolidating entity’s EDGAR submission, separated by spaces. If there are no other co-registrants (i.e., nciks=1), the value of aciks is NULL. For a very small number of filers, the entire list of co-registrants is too long to fit in the field. Where this is the case, users should refer to the complete submission file for all CIK information. |
| adsh | ddate | tag | value | uom | qtrs | version | segments | coreg | footnote |
|---|---|---|---|---|---|---|---|---|---|
| 0001558370-25-007346 | 20250331 | Assets | 4165063000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Assets | -2333101000.0000 | USD | 0 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20250331 | Assets Current | 6216705000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | 1044901000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Common Stock Dividends Per Share Declared | 0.5000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest | 217679000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 993262000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 1020144000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | -657878000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20241231 | Deferred Income Tax Liabilities Net | 902186000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 14253000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20241231 | Employee Related Liabilities Current | 373216000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Employee Related Liabilities Current | 173318000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Income Tax Expense Benefit | 178281000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable | 165664000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Intangible Assets Net Excluding Goodwill | 220336000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Liabilities | 7096534000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Liabilities And Stockholders Equity | 14935233000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Net Cash Provided By Used In Financing Activities | -423846000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Net Cash Provided By Used In Investing Activities | -178759000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Net Income Loss Attributable To Noncontrolling Interest | 3459000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | 750975000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | 25710000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Other Assets Noncurrent | 693264000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax | -434000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Other Nonoperating Income Expense | 26784000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Other Nonoperating Income Expense | 17641000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Redeemable Noncontrolling Interest Equity Carrying Amount | 60000000.0000 | USD | 0 | us-gaap/2024 | Consolidated Entities= United Steel Supply Llc; | ||
| 0001558370-25-007346 | 20241231 | Retained Earnings Accumulated Deficit | 14798082000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 72156000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 61079000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 1041693000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 329844000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 1083000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 446096000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 197184000.0000 | USD | 1 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 34071000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 348401000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 371876000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Share Based Compensation | 17040000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Stockholders Equity | 8934287000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 421000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Accumulated Other Comprehensive Income; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -195861000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -6182274000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Treasury Stock Common; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 8774034000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Weighted Average Number Of Shares Outstanding Basic | 150262000.0000 | shares | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Accounts Receivable Net Current | 1647704000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20241231 | Accrued Income Taxes Current | 3783000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Assets | 14935233000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Assets | 3106134000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20241231 | Assets Current | 5431338000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | 1406464000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect | -361563000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest | 528000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 64576000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 306920000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 249541000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 211828000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 115252000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 133756000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Earnings Per Share Diluted | 3.6700 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Goodwill | 272133000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Steel Operations; | ||
| 0001558370-25-007346 | 20240331 | Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest | 765781000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Accounts Payable | 29499000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Accrued Liabilities | -280037000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Other Operating Assets | 32115000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Interest Paid Net | 28477000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Net Cash Provided By Used In Financing Activities | 623295000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Net Income Loss | 584041000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | -66433000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax | -139000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Payments For Repurchase Of Common Stock | 250138000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Payments Of Dividends Common Stock | 69514000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Proceeds From Issuance Of Debt | 1405943000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Proceeds From Payments For Other Financing Activities | -23108000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Profit Loss | 217151000.0000 | USD | 1 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20250331 | Repayments Of Debt | 432527000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 1124000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 66576000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 537612000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 127696000.0000 | USD | 1 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity | 8824710000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 171212000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Redeemable Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 14056868000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 652000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Common Stock; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -162028000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 171212000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Redeemable Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20240331 | Weighted Average Number Of Shares Outstanding Basic | 158666000.0000 | shares | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Accounts Payable Current | 972645000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20250331 | Accrued Income Taxes Current | 43249000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Commitments And Contingencies | USD | 0 | us-gaap/2024 | ||||
| 0001558370-25-007346 | 20240331 | Common Stock Dividends Per Share Declared | 0.4600 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Common Stock Par Or Stated Value Per Share | 0.0025 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Common Stock Shares Issued | 268377165.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Common Stock Value | 652000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 1227000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 17263000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 14970000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Earnings Per Share Diluted | 1.4400 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Goodwill | 1925000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; | ||
| 0001558370-25-007346 | 20250331 | Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest | 280654000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Income Taxes Paid Net | 3717000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Accounts Payable | 248600000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Accounts Receivable | 130753000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Intangible Assets Net Excluding Goodwill | 227234000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Inventory Net | 3099054000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Liabilities | 5989987000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Net Cash Provided By Used In Operating Activities | 152603000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Net Income Loss Attributable To Noncontrolling Interest | 528000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | 670931000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | -1006000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20250331 | Other Liabilities Noncurrent | 134509000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Payments For Proceeds From Other Investing Activities | -14255000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Payments To Acquire Property Plant And Equipment | 374310000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Property Plant And Equipment Net | 8117988000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Redeemable Noncontrolling Interest Equity Carrying Amount | 171212000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 307859000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 4278488000.0000 | USD | 1 | us-gaap/2024 | Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 1072507000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 352463000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 448000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 2904540000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 327275000.0000 | USD | 1 | us-gaap/2024 | Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Selling General And Administrative Expense | 181808000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 1217610000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Additional Paid In Capital; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 651000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Common Stock; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 14940418000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20250331 | Treasury Stock Common Value | 7334595000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Accounts Payable Current | 5157000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20250331 | Accrued Liabilities Current | 373258000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Additional Paid In Capital Common Stock | 1218235000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Amortization Of Intangible Assets | 7664000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Amortization Of Intangible Assets | 6897000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Cash And Cash Equivalents At Carrying Value | 1186917000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | 595010000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Common Stock Shares Authorized | 900000000.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Net Cash Provided By Used In Investing Activities | -292934000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Comprehensive Income Net Of Tax | 217151000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest | 587066000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 2682000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 2647000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Earnings Per Share Basic | 3.6800 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Goodwill | 477471000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Goodwill | 189413000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Metals Recycling Operations; | ||
| 0001558370-25-007346 | 20250331 | Income Tax Expense Benefit | 62975000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Interest Expense Nonoperating | 12131000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Interest Paid Net | 9327000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Long Term Debt Noncurrent | 3777132000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | -7555000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | -5621000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20240331 | Other Labor Related Expenses | 62652000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Profit Loss | 217679000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Repayments Of Debt | 413939000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 9953000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 3255000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 451763000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 3514528000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 4496819000.0000 | USD | 1 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 163019000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | -659253000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | -659253000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 651000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Common Stock; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 652000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Common Stock; | ||
| 0001558370-25-007346 | 20241231 | Treasury Stock Common Value | 7094266000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Profit Loss | 587500000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Property Plant And Equipment Net | 8322652000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Accounts Receivable Net Current | 54230000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20241231 | Cash And Cash Equivalents At Carrying Value | 589464000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect | 597139000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Common Stock Shares Authorized | 900000000.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Common Stock Shares Issued | 268417974.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Common Stock Shares Outstanding | 151117153.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Comprehensive Income Net Of Tax | 583607000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 3713205000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | -691305000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 91471000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 2870498000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20241231 | Goodwill | 477471000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Other Operating Assets | 12176000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Long Term Debt Current | 418947000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Minority Interest | -162028000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Net Cash Provided By Used In Operating Activities | 355217000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | -97872000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20241231 | Other Assets Current | 163131000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Other Assets Current | 190297000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax | -434000.0000 | USD | 1 | us-gaap/2024 | Equity Components= Accumulated Other Comprehensive Income; | ||
| 0001558370-25-007346 | 20241231 | Other Liabilities Noncurrent | 133201000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Redeemable Noncontrolling Interest Equity Carrying Amount | 111200000.0000 | USD | 0 | us-gaap/2024 | Consolidated Entities= Mesabi Nugget; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 311114000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 177426000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 534423000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 232627000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | -697251000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 100647000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 347069000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 156000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 351859000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20240331 | Selling General And Administrative Expense | 159507000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 8668315000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -5897606000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Treasury Stock Common; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 8876547000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 171212000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Redeemable Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 1229819000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Additional Paid In Capital; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 1218235000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Additional Paid In Capital; | ||
| 0001558370-25-007346 | 20241231 | Accrued Liabilities Current | 366682000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | 1192149000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Commitments And Contingencies | USD | 0 | us-gaap/2024 | ||||
| 0001558370-25-007346 | 20250331 | Common Stock Value | 652000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 346588000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Deferred Income Tax Liabilities Net | 918435000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Earnings Per Share Basic | 1.4500 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Long Term Debt Noncurrent | 2804017000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Minority Interest | -160253000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Net Income Loss | 217151000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | 178340000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Other Operating Activities Cash Flow Statement | 18705000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Payments For Proceeds From Other Investing Activities | 1064000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Payments To Acquire Short Term Investments | 205873000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Proceeds From Issuance Of Debt | 379268000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Profit Loss | 3459000.0000 | USD | 1 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20240331 | Profit Loss | 584041000.0000 | USD | 1 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20250331 | Profit Loss | 528000.0000 | USD | 1 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20250331 | Redeemable Noncontrolling Interest Equity Carrying Amount | 171212000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Redeemable Noncontrolling Interest Equity Carrying Amount | 60000000.0000 | USD | 0 | us-gaap/2024 | Consolidated Entities= United Steel Supply Llc; | ||
| 0001558370-25-007346 | 20250331 | Retained Earnings Accumulated Deficit | 14940418000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 4694003000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 4584000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 1332000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 162476000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 87414000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 4041920000.0000 | USD | 1 | us-gaap/2024 | Geographical= U S; | ||
| 0001558370-25-007346 | 20241231 | Short Term Investments | 147811000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Short Term Investments | 19636000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -198351000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20231231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 13545590000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -13000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Accumulated Other Comprehensive Income; | ||
| 0001558370-25-007346 | 20250331 | Weighted Average Number Of Diluted Shares Outstanding | 150809000.0000 | shares | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Accounts Payable Current | 1252529000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20250331 | Accounts Receivable Net Current | 73097000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20241231 | Additional Paid In Capital Common Stock | 1229819000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Assets | 15930428000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest | 3459000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Deferred Income Tax Noncash Expense Benefit | -21024000.0000 | USD | 1 | 0001558370-25-007346 | |||
| 0001558370-25-007346 | 20250331 | Deferred Income Tax Noncash Expense Benefit | 16249000.0000 | USD | 1 | 0001558370-25-007346 | |||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 87507000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Goodwill | 14000000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Aluminum Operations; | ||
| 0001558370-25-007346 | 20240331 | Income Taxes Paid Net | 28390000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Accrued Liabilities | -197434000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable | 42815000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Increase Decrease In Inventories | 133025000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Inventory Net | 3113733000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Liabilities Current | 2150583000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Liabilities Current | 2266458000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Operating Income Loss | 12752000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20241231 | Other Assets Noncurrent | 681202000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Other Operating Activities Cash Flow Statement | -4195000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Payments To Acquire Property Plant And Equipment | 305506000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Payments To Acquire Short Term Investments | 10000000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Proceeds From Maturities Prepayments And Calls Of Shortterm Investments | 137811000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Redeemable Noncontrolling Interest Equity Carrying Amount | 111200000.0000 | USD | 0 | us-gaap/2024 | Consolidated Entities= Mesabi Nugget; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 148291000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 3133610000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; Geographical= U S; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 4369195000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Share Based Compensation | 15612000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -160253000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 171212000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Redeemable Noncontrolling Interest; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 14798082000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Retained Earnings; | ||
| 0001558370-25-007346 | 20241231 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -7094266000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Treasury Stock Common; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 8662682000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Treasury Stock Common Shares | 119037939.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Accounts Payable Current | 7267000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Related Party; | ||
| 0001558370-25-007346 | 20241231 | Accounts Receivable Net Current | 1362969000.0000 | USD | 0 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20250331 | Assets | 1484448000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Metals Recycling Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Assets | 623582000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Assets | 8884302000.0000 | USD | 0 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Common Stock Par Or Stated Value Per Share | 0.0025 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Common Stock Shares Outstanding | 149380035.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Cost Of Goods And Services Sold | 2790211000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Cost Of Goods And Services Sold | 3882651000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Depreciation Depletion And Amortization | 6573000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Corporate And Other; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 2956000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Depreciation Depletion And Amortization | 98930000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20240331 | Gross Profit | 980798000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Gross Profit | 486544000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Accounts Receivable | 303602000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Increase Decrease In Inventories | -13810000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Interest Expense Nonoperating | 11978000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Liabilities And Stockholders Equity | 15930428000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20241231 | Long Term Debt Current | 426990000.0000 | USD | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | 275144000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | -28735000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Aluminum Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | 116746000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Fabrication Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Operating Income Loss | 228862000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Other Labor Related Expenses | 22695000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Payments For Repurchase Of Common Stock | 298059000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Payments Of Dividends Common Stock | 68008000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Proceeds From Maturities Prepayments And Calls Of Shortterm Investments | 272994000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20250331 | Proceeds From Payments For Other Financing Activities | -30469000.0000 | USD | 1 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | -697251000.0000 | USD | 1 | us-gaap/2024 | Consolidated Entities= Intersegment Elimination; Geographical= Other Segments; | ||
| 0001558370-25-007346 | 20240331 | Revenue From Contract With Customer Excluding Assessed Tax | 415515000.0000 | USD | 1 | us-gaap/2024 | Geographical= Non Us; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 3154430000.0000 | USD | 1 | us-gaap/2024 | Business Segments= Steel Operations; Consolidated Entities= Operating Segments; | ||
| 0001558370-25-007346 | 20250331 | Revenue From Contract With Customer Excluding Assessed Tax | 4241499000.0000 | USD | 1 | us-gaap/2024 | Related Party Transactions By Related Party= Nonrelated Party; | ||
| 0001558370-25-007346 | 20240331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 1197176000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Additional Paid In Capital; | ||
| 0001558370-25-007346 | 20250331 | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | -7334595000.0000 | USD | 0 | us-gaap/2024 | Equity Components= Treasury Stock Common; | ||
| 0001558370-25-007346 | 20241231 | Treasury Stock Common Shares | 117260012.0000 | shares | 0 | us-gaap/2024 | |||
| 0001558370-25-007346 | 20240331 | Weighted Average Number Of Diluted Shares Outstanding | 159354000.0000 | shares | 1 | us-gaap/2024 |
| Field Name | Field Description |
|---|---|
| adsh | Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission. |
| tag | The unique identifier (name) for a tag in a specific taxonomy release. |
| version | For a standard tag, an identifier for the taxonomy; otherwise the accession number where the tag was defined. |
| ddate | The end date for the data value, rounded to the nearest month end. |
| qtrs | The count of the number of quarters represented by the data value, rounded to the nearest whole number. “0” indicates it is a point-in-time value. |
| uom | The unit of measure for the value. |
| segments | Tags used to represent axis and member reporting. |
| coreg | If specified, indicates a specific co-registrant, the parent company, or other entity (e.g., guarantor). NULL indicates the consolidated entity. |
| value | The value. This is not scaled, it is as found in the Interactive Data file, but is limited to four digits to the right of the decimal point. |
| footnote | The text of any superscripted footnotes on the value, as shown on the statement page, truncated to 512 characters, or if there is no footnote, then this field will be blank. |
| tag | version | custom | abstract | datatype | iord | crdr | tlabel | doc |
|---|---|---|---|---|---|---|---|---|
| Increase Decrease In Accounts Receivable | us-gaap/2024 | 0 | 0 | monetary | D | C | Increase (Decrease) in Accounts Receivable | The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. |
| Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest | us-gaap/2024 | 0 | 0 | monetary | D | C | Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. |
| Assets Current | us-gaap/2024 | 0 | 0 | monetary | I | D | Assets, Current | Amount of asset recognized for present right to economic benefit, classified as current. |
| Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | us-gaap/2024 | 0 | 0 | monetary | I | D | Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents | Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
| Revenue From Contract With Customer Excluding Assessed Tax | us-gaap/2024 | 0 | 0 | monetary | D | C | Revenue from Contract with Customer, Excluding Assessed Tax | Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. |
| Payments To Acquire Property Plant And Equipment | us-gaap/2024 | 0 | 0 | monetary | D | C | Payments to Acquire Property, Plant, and Equipment | The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. |
| Comprehensive Income Net Of Tax | us-gaap/2024 | 0 | 0 | monetary | D | C | Comprehensive Income (Loss), Net of Tax, Attributable to Parent | Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. |
| Stockholders Equity Including Portion Attributable To Noncontrolling Interest | us-gaap/2024 | 0 | 0 | monetary | I | C | Equity, Including Portion Attributable to Noncontrolling Interest | Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. |
| Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest | us-gaap/2024 | 0 | 0 | monetary | D | D | Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. |
| Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest | us-gaap/2024 | 0 | 0 | monetary | D | C | Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. |
| Net Income Loss Attributable To Noncontrolling Interest | us-gaap/2024 | 0 | 0 | monetary | D | D | Net Income (Loss) Attributable to Noncontrolling Interest | Amount of Net Income (Loss) attributable to noncontrolling interest. |
| Liabilities | us-gaap/2024 | 0 | 0 | monetary | I | C | Liabilities | Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. |
| Liabilities And Stockholders Equity | us-gaap/2024 | 0 | 0 | monetary | I | C | Liabilities and Equity | Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. |
| Income Tax Expense Benefit | us-gaap/2024 | 0 | 0 | monetary | D | D | Income Tax Expense (Benefit) | Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
| Retained Earnings Accumulated Deficit | us-gaap/2024 | 0 | 0 | monetary | I | C | Retained Earnings (Accumulated Deficit) | Amount of accumulated undistributed earnings (deficit). |
| Short Term Investments | us-gaap/2024 | 0 | 0 | monetary | I | D | Short-Term Investments | Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. |
| Accounts Receivable Net Current | us-gaap/2024 | 0 | 0 | monetary | I | D | Accounts Receivable, after Allowance for Credit Loss, Current | Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. |
| Common Stock Dividends Per Share Declared | us-gaap/2024 | 0 | 0 | perShare | D | Common Stock, Dividends, Per Share, Declared | Aggregate dividends declared during the period for each share of common stock outstanding. | |
| Common Stock Par Or Stated Value Per Share | us-gaap/2024 | 0 | 0 | perShare | I | Common Stock, Par or Stated Value Per Share | Face amount or stated value per share of common stock. | |
| Common Stock Shares Outstanding | us-gaap/2024 | 0 | 0 | shares | I | Common Stock, Shares, Outstanding | Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. | |
| Net Income Loss | us-gaap/2024 | 0 | 0 | monetary | D | C | Net Income (Loss) Attributable to Parent | The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. |
| Weighted Average Number Of Diluted Shares Outstanding | us-gaap/2024 | 0 | 0 | shares | D | Weighted Average Number of Shares Outstanding, Diluted | The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. | |
| Other Operating Activities Cash Flow Statement | us-gaap/2024 | 0 | 0 | monetary | D | D | Other Operating Activities, Cash Flow Statement | Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities). |
| Stockholders Equity | us-gaap/2024 | 0 | 0 | monetary | I | C | Equity, Attributable to Parent | Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. |
| Assets | us-gaap/2024 | 0 | 0 | monetary | I | D | Assets | Amount of asset recognized for present right to economic benefit. |
| Deferred Income Tax Noncash Expense Benefit | 0001558370-25-007346 | 1 | 0 | monetary | D | D | Deferred Income Tax Noncash Expense (Benefit) | The noncash component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. |
| Common Stock Shares Issued | us-gaap/2024 | 0 | 0 | shares | I | Common Stock, Shares, Issued | Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. | |
| Cost Of Goods And Services Sold | us-gaap/2024 | 0 | 0 | monetary | D | D | Cost of Goods and Services Sold | The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. |
| Gross Profit | us-gaap/2024 | 0 | 0 | monetary | D | C | Gross Profit | Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. |
| Earnings Per Share Diluted | us-gaap/2024 | 0 | 0 | perShare | D | Earnings Per Share, Diluted | The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. | |
| Other Assets Noncurrent | us-gaap/2024 | 0 | 0 | monetary | I | D | Other Assets, Noncurrent | Amount of noncurrent assets classified as other. |
| Payments For Proceeds From Other Investing Activities | us-gaap/2024 | 0 | 0 | monetary | D | C | Payments for (Proceeds from) Other Investing Activities | Amount of cash (inflow) outflow from investing activities classified as other. |
| Accrued Liabilities Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Accrued Liabilities, Current | Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
| Depreciation Depletion And Amortization | us-gaap/2024 | 0 | 0 | monetary | D | D | Depreciation, Depletion and Amortization | The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. |
| Interest Expense Nonoperating | us-gaap/2024 | 0 | 0 | monetary | D | D | Interest Expense, Nonoperating | Amount of interest expense classified as nonoperating. |
| Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable | us-gaap/2024 | 0 | 0 | monetary | D | D | Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable | The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes. |
| Liabilities Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Liabilities, Current | Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. |
| Increase Decrease In Other Operating Assets | us-gaap/2024 | 0 | 0 | monetary | D | C | Increase (Decrease) in Other Operating Assets | Amount of increase (decrease) in operating assets classified as other. |
| Proceeds From Issuance Of Debt | us-gaap/2024 | 0 | 0 | monetary | D | D | Proceeds from Issuance of Debt | The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. |
| Proceeds From Maturities Prepayments And Calls Of Shortterm Investments | us-gaap/2024 | 0 | 0 | monetary | D | D | Proceeds from Maturities, Prepayments and Calls of Short-Term Investments | The cash inflow from maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. |
| Cash And Cash Equivalents At Carrying Value | us-gaap/2024 | 0 | 0 | monetary | I | D | Cash and Cash Equivalents, at Carrying Value | Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. |
| Selling General And Administrative Expense | us-gaap/2024 | 0 | 0 | monetary | D | D | Selling, General and Administrative Expense | The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. |
| Share Based Compensation | us-gaap/2024 | 0 | 0 | monetary | D | D | Share-Based Payment Arrangement, Noncash Expense | Amount of noncash expense for share-based payment arrangement. |
| Income Taxes Paid Net | us-gaap/2024 | 0 | 0 | monetary | D | C | Income Taxes Paid, Net | Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. |
| Increase Decrease In Inventories | us-gaap/2024 | 0 | 0 | monetary | D | C | Increase (Decrease) in Inventories | The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. |
| Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax | us-gaap/2024 | 0 | 0 | monetary | D | D | Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax | Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
| Other Labor Related Expenses | us-gaap/2024 | 0 | 0 | monetary | D | D | Other Labor-related Expenses | Amount of labor-related expenses classified as other. |
| Profit Loss | us-gaap/2024 | 0 | 0 | monetary | D | C | Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. |
| Accrued Income Taxes Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Accrued Income Taxes, Current | Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. |
| Goodwill | us-gaap/2024 | 0 | 0 | monetary | I | D | Goodwill | Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. |
| Employee Related Liabilities Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Employee-related Liabilities, Current | Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
| Intangible Assets Net Excluding Goodwill | us-gaap/2024 | 0 | 0 | monetary | I | D | Intangible Assets, Net (Excluding Goodwill) | Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. |
| Net Cash Provided By Used In Operating Activities | us-gaap/2024 | 0 | 0 | monetary | D | Net Cash Provided by (Used in) Operating Activities | Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. | |
| Other Liabilities Noncurrent | us-gaap/2024 | 0 | 0 | monetary | I | C | Other Liabilities, Noncurrent | Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. |
| Operating Income Loss | us-gaap/2024 | 0 | 0 | monetary | D | C | Operating Income (Loss) | The net result for the period of deducting operating expenses from operating revenues. |
| Other Assets Current | us-gaap/2024 | 0 | 0 | monetary | I | D | Other Assets, Current | Amount of current assets classified as other. |
| Proceeds From Payments For Other Financing Activities | us-gaap/2024 | 0 | 0 | monetary | D | D | Proceeds from (Payments for) Other Financing Activities | Amount of cash inflow (outflow) from financing activities classified as other. |
| Redeemable Noncontrolling Interest Equity Carrying Amount | us-gaap/2024 | 0 | 0 | monetary | I | C | Redeemable Noncontrolling Interest, Equity, Carrying Amount | As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. |
| Repayments Of Debt | us-gaap/2024 | 0 | 0 | monetary | D | C | Repayments of Debt | Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation. |
| Common Stock Value | us-gaap/2024 | 0 | 0 | monetary | I | C | Common Stock, Value, Issued | Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. |
| Inventory Net | us-gaap/2024 | 0 | 0 | monetary | I | D | Inventory, Net | Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. |
| Accounts Payable Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Accounts Payable, Current | Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
| Additional Paid In Capital Common Stock | us-gaap/2024 | 0 | 0 | monetary | I | C | Additional Paid in Capital, Common Stock | Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. |
| Amortization Of Intangible Assets | us-gaap/2024 | 0 | 0 | monetary | D | D | Amortization of Intangible Assets | The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. |
| Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect | us-gaap/2024 | 0 | 0 | monetary | D | D | Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect | Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
| Commitments And Contingencies | us-gaap/2024 | 0 | 0 | monetary | I | C | Commitments and Contingencies | Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. |
| Common Stock Shares Authorized | us-gaap/2024 | 0 | 0 | shares | I | Common Stock, Shares Authorized | The maximum number of common shares permitted to be issued by an entity's charter and bylaws. | |
| Deferred Income Tax Liabilities Net | us-gaap/2024 | 0 | 0 | monetary | I | C | Deferred Income Tax Liabilities, Net | Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. |
| Increase Decrease In Accounts Payable | us-gaap/2024 | 0 | 0 | monetary | D | D | Increase (Decrease) in Accounts Payable | The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. |
| Interest Paid Net | us-gaap/2024 | 0 | 0 | monetary | D | C | Interest Paid, Excluding Capitalized Interest, Operating Activities | Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. |
| Net Cash Provided By Used In Financing Activities | us-gaap/2024 | 0 | 0 | monetary | D | D | Net Cash Provided by (Used in) Financing Activities | Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. |
| Earnings Per Share Basic | us-gaap/2024 | 0 | 0 | perShare | D | Earnings Per Share, Basic | The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. | |
| Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax | us-gaap/2024 | 0 | 0 | monetary | D | C | Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
| Payments For Repurchase Of Common Stock | us-gaap/2024 | 0 | 0 | monetary | D | C | Payments for Repurchase of Common Stock | The cash outflow to reacquire common stock during the period. |
| Other Nonoperating Income Expense | us-gaap/2024 | 0 | 0 | monetary | D | C | Other Nonoperating Income (Expense) | Amount of income (expense) related to nonoperating activities, classified as other. |
| Net Cash Provided By Used In Investing Activities | us-gaap/2024 | 0 | 0 | monetary | D | D | Net Cash Provided by (Used in) Investing Activities | Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. |
| Increase Decrease In Accrued Liabilities | us-gaap/2024 | 0 | 0 | monetary | D | D | Increase (Decrease) in Accrued Liabilities | The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid. |
| Treasury Stock Common Value | us-gaap/2024 | 0 | 0 | monetary | I | D | Treasury Stock, Common, Value | Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. |
| Payments Of Dividends Common Stock | us-gaap/2024 | 0 | 0 | monetary | D | C | Payments of Ordinary Dividends, Common Stock | Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. |
| Long Term Debt Current | us-gaap/2024 | 0 | 0 | monetary | I | C | Long-Term Debt, Current Maturities | Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. |
| Long Term Debt Noncurrent | us-gaap/2024 | 0 | 0 | monetary | I | C | Long-Term Debt, Excluding Current Maturities | Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. |
| Minority Interest | us-gaap/2024 | 0 | 0 | monetary | I | C | Equity, Attributable to Noncontrolling Interest | Amount of equity (deficit) attributable to noncontrolling interest. Excludes temporary equity. |
| Payments To Acquire Short Term Investments | us-gaap/2024 | 0 | 0 | monetary | D | C | Payments to Acquire Short-Term Investments | The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. |
| Treasury Stock Common Shares | us-gaap/2024 | 0 | 0 | shares | I | Treasury Stock, Common, Shares | Number of previously issued common shares repurchased by the issuing entity and held in treasury. | |
| Property Plant And Equipment Net | us-gaap/2024 | 0 | 0 | monetary | I | D | Property, Plant and Equipment, Net | Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. |
| Weighted Average Number Of Shares Outstanding Basic | us-gaap/2024 | 0 | 0 | shares | D | Weighted Average Number of Shares Outstanding, Basic | Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. |
| Field Name | Field Description |
|---|---|
| tag | The unique identifier (name) for a tag in a specific taxonomy release. |
| version | For a standard tag, an identifier for the taxonomy; otherwise the accession number where the tag was defined. |
| custom | 1 if tag is custom (version=adsh), 0 if it is standard. Note: This flag is technically redundant with the version and adsh columns. |
| abstract | 1 if the tag is not used to represent a numeric fact. |
| datatype | If abstract=1, then NULL, otherwise the data type (e.g., monetary) for the tag. |
| iord | If abstract=1, then NULL; otherwise, “I” if the value is a point-in time, or “D” if the value is a duration. |
| crdr | If datatype = monetary, then the tag’s natural accounting balance (debit or credit); if not defined, then NULL. |
| tlabel | If a standard tag, then the label text provided by the taxonomy, otherwise the text provided by the filer. A tag which had neither would have a NULL value here. |
| doc | The detailed definition for the tag. If a standard tag, then the text provided by the taxonomy, otherwise the text assigned by the filer. Some tags have neither, and this field is NULL. |
| adsh | report | line | stmt | inpth | rfile | tag | version | plabel | negating |
|---|---|---|---|---|---|---|---|---|---|
| 0001558370-25-007346 | 2 | 9 | BS | 0 | H | Cash And Cash Equivalents At Carrying Value | us-gaap/2024 | Cash and equivalents | 0 |
| 0001558370-25-007346 | 2 | 10 | BS | 0 | H | Short Term Investments | us-gaap/2024 | Short-term investments | 0 |
| 0001558370-25-007346 | 2 | 11 | BS | 0 | H | Accounts Receivable Net Current | us-gaap/2024 | Accounts receivable, net | 0 |
| 0001558370-25-007346 | 2 | 12 | BS | 0 | H | Inventory Net | us-gaap/2024 | Inventories | 0 |
| 0001558370-25-007346 | 2 | 13 | BS | 0 | H | Other Assets Current | us-gaap/2024 | Other current assets | 0 |
| 0001558370-25-007346 | 2 | 14 | BS | 0 | H | Assets Current | us-gaap/2024 | Total current assets | 0 |
| 0001558370-25-007346 | 2 | 15 | BS | 0 | H | Property Plant And Equipment Net | us-gaap/2024 | Property, plant and equipment, net | 0 |
| 0001558370-25-007346 | 2 | 16 | BS | 0 | H | Intangible Assets Net Excluding Goodwill | us-gaap/2024 | Intangible assets, net | 0 |
| 0001558370-25-007346 | 2 | 17 | BS | 0 | H | Goodwill | us-gaap/2024 | Goodwill | 0 |
| 0001558370-25-007346 | 2 | 18 | BS | 0 | H | Other Assets Noncurrent | us-gaap/2024 | Other assets | 0 |
| 0001558370-25-007346 | 2 | 19 | BS | 0 | H | Assets | us-gaap/2024 | Total assets | 0 |
| 0001558370-25-007346 | 2 | 22 | BS | 0 | H | Accounts Payable Current | us-gaap/2024 | Accounts payable | 0 |
| 0001558370-25-007346 | 2 | 23 | BS | 0 | H | Accrued Income Taxes Current | us-gaap/2024 | Income taxes payable | 0 |
| 0001558370-25-007346 | 2 | 24 | BS | 0 | H | Employee Related Liabilities Current | us-gaap/2024 | Accrued payroll and benefits | 0 |
| 0001558370-25-007346 | 2 | 25 | BS | 0 | H | Accrued Liabilities Current | us-gaap/2024 | Accrued expenses | 0 |
| 0001558370-25-007346 | 2 | 26 | BS | 0 | H | Long Term Debt Current | us-gaap/2024 | Current maturities of long-term debt | 0 |
| 0001558370-25-007346 | 2 | 27 | BS | 0 | H | Liabilities Current | us-gaap/2024 | Total current liabilities | 0 |
| 0001558370-25-007346 | 2 | 28 | BS | 0 | H | Long Term Debt Noncurrent | us-gaap/2024 | Long-term debt | 0 |
| 0001558370-25-007346 | 2 | 29 | BS | 0 | H | Deferred Income Tax Liabilities Net | us-gaap/2024 | Deferred income taxes | 0 |
| 0001558370-25-007346 | 2 | 30 | BS | 0 | H | Other Liabilities Noncurrent | us-gaap/2024 | Other liabilities | 0 |
| 0001558370-25-007346 | 2 | 31 | BS | 0 | H | Liabilities | us-gaap/2024 | Total liabilities | 0 |
| 0001558370-25-007346 | 2 | 32 | BS | 0 | H | Commitments And Contingencies | us-gaap/2024 | Commitments and contingencies | 0 |
| 0001558370-25-007346 | 2 | 33 | BS | 0 | H | Redeemable Noncontrolling Interest Equity Carrying Amount | us-gaap/2024 | Redeemable noncontrolling interests | 0 |
| 0001558370-25-007346 | 2 | 35 | BS | 0 | H | Common Stock Value | us-gaap/2024 | Common stock voting, $0.0025 par value; 900,000,000 shares authorized; 268,417,974 and 268,377,165 shares issued; and 149,380,035 and 151,117,153 shares outstanding, as of March 31, 2025 and December 31, 2024, respectively | 0 |
| 0001558370-25-007346 | 2 | 36 | BS | 0 | H | Treasury Stock Common Value | us-gaap/2024 | Treasury stock, at cost; 119,037,939 and 117,260,012 shares, as of March 31, 2025 and December 31, 2024, respectively | 1 |
| 0001558370-25-007346 | 2 | 37 | BS | 0 | H | Additional Paid In Capital Common Stock | us-gaap/2024 | Additional paid-in capital | 0 |
| 0001558370-25-007346 | 2 | 38 | BS | 0 | H | Retained Earnings Accumulated Deficit | us-gaap/2024 | Retained earnings | 0 |
| 0001558370-25-007346 | 2 | 39 | BS | 0 | H | Stockholders Equity | us-gaap/2024 | Total Steel Dynamics, Inc. equity | 0 |
| 0001558370-25-007346 | 2 | 40 | BS | 0 | H | Minority Interest | us-gaap/2024 | Noncontrolling interests | 0 |
| 0001558370-25-007346 | 2 | 41 | BS | 0 | H | Stockholders Equity Including Portion Attributable To Noncontrolling Interest | us-gaap/2024 | Total equity | 0 |
| 0001558370-25-007346 | 2 | 42 | BS | 0 | H | Liabilities And Stockholders Equity | us-gaap/2024 | Total liabilities and equity | 0 |
| 0001558370-25-007346 | 3 | 1 | BS | 1 | H | Common Stock Par Or Stated Value Per Share | us-gaap/2024 | Common stock voting, par value (in dollars per share) | 0 |
| 0001558370-25-007346 | 3 | 2 | BS | 1 | H | Common Stock Shares Authorized | us-gaap/2024 | Common stock voting, shares authorized (in shares) | 0 |
| 0001558370-25-007346 | 3 | 3 | BS | 1 | H | Common Stock Shares Issued | us-gaap/2024 | Common stock voting, shares issued (in shares) | 0 |
| 0001558370-25-007346 | 3 | 4 | BS | 1 | H | Common Stock Shares Outstanding | us-gaap/2024 | Common stock voting, shares outstanding (in shares) | 0 |
| 0001558370-25-007346 | 3 | 5 | BS | 1 | H | Treasury Stock Common Shares | us-gaap/2024 | Treasury stock, shares (in shares) | 0 |
| 0001558370-25-007346 | 4 | 7 | IS | 0 | H | Revenue From Contract With Customer Excluding Assessed Tax | us-gaap/2024 | Total net sales | 0 |
| 0001558370-25-007346 | 4 | 8 | IS | 0 | H | Cost Of Goods And Services Sold | us-gaap/2024 | Costs of goods sold | 0 |
| 0001558370-25-007346 | 4 | 9 | IS | 0 | H | Gross Profit | us-gaap/2024 | Gross profit | 0 |
| 0001558370-25-007346 | 4 | 10 | IS | 0 | H | Selling General And Administrative Expense | us-gaap/2024 | Selling, general and administrative expenses | 0 |
| 0001558370-25-007346 | 4 | 11 | IS | 0 | H | Other Labor Related Expenses | us-gaap/2024 | Profit sharing | 0 |
| 0001558370-25-007346 | 4 | 12 | IS | 0 | H | Amortization Of Intangible Assets | us-gaap/2024 | Amortization of intangible assets | 0 |
| 0001558370-25-007346 | 4 | 13 | IS | 0 | H | Operating Income Loss | us-gaap/2024 | Operating income | 0 |
| 0001558370-25-007346 | 4 | 14 | IS | 0 | H | Interest Expense Nonoperating | us-gaap/2024 | Interest expense, net of capitalized interest | 0 |
| 0001558370-25-007346 | 4 | 15 | IS | 0 | H | Other Nonoperating Income Expense | us-gaap/2024 | Other (income) expense, net | 1 |
| 0001558370-25-007346 | 4 | 16 | IS | 0 | H | Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest | us-gaap/2024 | Income before income taxes | 0 |
| 0001558370-25-007346 | 4 | 17 | IS | 0 | H | Income Tax Expense Benefit | us-gaap/2024 | Income tax expense | 0 |
| 0001558370-25-007346 | 4 | 18 | IS | 0 | H | Profit Loss | us-gaap/2024 | Net income | 0 |
| 0001558370-25-007346 | 4 | 19 | IS | 0 | H | Net Income Loss Attributable To Noncontrolling Interest | us-gaap/2024 | Net income attributable to noncontrolling interests | 1 |
| 0001558370-25-007346 | 4 | 20 | IS | 0 | H | Net Income Loss | us-gaap/2024 | Net income attributable to Steel Dynamics, Inc. | 0 |
| 0001558370-25-007346 | 4 | 21 | IS | 0 | H | Earnings Per Share Basic | us-gaap/2024 | Basic earnings per share attributable to Steel Dynamics, Inc. stockholders (in dollars per share) | 0 |
| 0001558370-25-007346 | 4 | 22 | IS | 0 | H | Weighted Average Number Of Shares Outstanding Basic | us-gaap/2024 | Weighted average common shares outstanding (in shares) | 0 |
| 0001558370-25-007346 | 4 | 23 | IS | 0 | H | Earnings Per Share Diluted | us-gaap/2024 | Diluted earnings per share attributable to Steel Dynamics, Inc. stockholders, including the effect of assumed conversions when dilutive (in dollars per share) | 0 |
| 0001558370-25-007346 | 4 | 24 | IS | 0 | H | Weighted Average Number Of Diluted Shares Outstanding | us-gaap/2024 | Weighted average common shares and share equivalents outstanding (in shares) | 0 |
| 0001558370-25-007346 | 4 | 25 | IS | 0 | H | Common Stock Dividends Per Share Declared | us-gaap/2024 | Dividends declared per share (in dollars per share) | 0 |
| 0001558370-25-007346 | 5 | 1 | CI | 0 | H | Profit Loss | us-gaap/2024 | Net income | 0 |
| 0001558370-25-007346 | 5 | 2 | CI | 0 | H | Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax | us-gaap/2024 | Other comprehensive loss - net unrealized loss on cash flow hedging derivatives, net of income tax benefit of $139 for the three months ended March 31, 2024 | 0 |
| 0001558370-25-007346 | 5 | 3 | CI | 0 | H | Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest | us-gaap/2024 | Comprehensive income | 0 |
| 0001558370-25-007346 | 5 | 4 | CI | 0 | H | Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest | us-gaap/2024 | Comprehensive income attributable to noncontrolling interests | 1 |
| 0001558370-25-007346 | 5 | 5 | CI | 0 | H | Comprehensive Income Net Of Tax | us-gaap/2024 | Comprehensive income attributable to Steel Dynamics, Inc. | 0 |
| 0001558370-25-007346 | 6 | 1 | CI | 1 | H | Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax | us-gaap/2024 | Net unrealized loss on cash flow hedging derivatives, net of income tax benefit | 0 |
| 0001558370-25-007346 | 7 | 2 | CF | 0 | H | Profit Loss | us-gaap/2024 | Net income | 0 |
| 0001558370-25-007346 | 7 | 4 | CF | 0 | H | Depreciation Depletion And Amortization | us-gaap/2024 | Depreciation and amortization | 0 |
| 0001558370-25-007346 | 7 | 5 | CF | 0 | H | Share Based Compensation | us-gaap/2024 | Equity-based compensation | 0 |
| 0001558370-25-007346 | 7 | 6 | CF | 0 | H | Deferred Income Tax Noncash Expense Benefit | 0001558370-25-007346 | Deferred income taxes | 0 |
| 0001558370-25-007346 | 7 | 7 | CF | 0 | H | Other Operating Activities Cash Flow Statement | us-gaap/2024 | Other adjustments | 0 |
| 0001558370-25-007346 | 7 | 9 | CF | 0 | H | Increase Decrease In Accounts Receivable | us-gaap/2024 | Accounts receivable | 1 |
| 0001558370-25-007346 | 7 | 10 | CF | 0 | H | Increase Decrease In Inventories | us-gaap/2024 | Inventories | 1 |
| 0001558370-25-007346 | 7 | 11 | CF | 0 | H | Increase Decrease In Other Operating Assets | us-gaap/2024 | Other assets | 1 |
| 0001558370-25-007346 | 7 | 12 | CF | 0 | H | Increase Decrease In Accounts Payable | us-gaap/2024 | Accounts payable | 0 |
| 0001558370-25-007346 | 7 | 13 | CF | 0 | H | Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable | us-gaap/2024 | Income taxes receivable/payable | 0 |
| 0001558370-25-007346 | 7 | 14 | CF | 0 | H | Increase Decrease In Accrued Liabilities | us-gaap/2024 | Accrued expenses | 0 |
| 0001558370-25-007346 | 7 | 15 | CF | 0 | H | Net Cash Provided By Used In Operating Activities | us-gaap/2024 | Net cash provided by operating activities | 0 |
| 0001558370-25-007346 | 7 | 17 | CF | 0 | H | Payments To Acquire Property Plant And Equipment | us-gaap/2024 | Purchases of property, plant and equipment | 1 |
| 0001558370-25-007346 | 7 | 18 | CF | 0 | H | Payments To Acquire Short Term Investments | us-gaap/2024 | Purchases of short-term investments | 1 |
| 0001558370-25-007346 | 7 | 19 | CF | 0 | H | Proceeds From Maturities Prepayments And Calls Of Shortterm Investments | us-gaap/2024 | Proceeds from maturities of short-term investments | 0 |
| 0001558370-25-007346 | 7 | 20 | CF | 0 | H | Payments For Proceeds From Other Investing Activities | us-gaap/2024 | Other investing activities | 1 |
| 0001558370-25-007346 | 7 | 21 | CF | 0 | H | Net Cash Provided By Used In Investing Activities | us-gaap/2024 | Net cash used in investing activities | 0 |
| 0001558370-25-007346 | 7 | 23 | CF | 0 | H | Proceeds From Issuance Of Debt | us-gaap/2024 | Issuance of current and long-term debt | 0 |
| 0001558370-25-007346 | 7 | 24 | CF | 0 | H | Repayments Of Debt | us-gaap/2024 | Repayment of current and long-term debt | 1 |
| 0001558370-25-007346 | 7 | 25 | CF | 0 | H | Payments Of Dividends Common Stock | us-gaap/2024 | Dividends paid | 1 |
| 0001558370-25-007346 | 7 | 26 | CF | 0 | H | Payments For Repurchase Of Common Stock | us-gaap/2024 | Purchases of treasury stock | 1 |
| 0001558370-25-007346 | 7 | 27 | CF | 0 | H | Proceeds From Payments For Other Financing Activities | us-gaap/2024 | Other financing activities | 0 |
| 0001558370-25-007346 | 7 | 28 | CF | 0 | H | Net Cash Provided By Used In Financing Activities | us-gaap/2024 | Net cash provided by (used in) financing activities | 0 |
| 0001558370-25-007346 | 7 | 29 | CF | 0 | H | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect | us-gaap/2024 | Increase (decrease) in cash, cash equivalents, and restricted cash | 0 |
| 0001558370-25-007346 | 7 | 30 | CF | 0 | H | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | us-gaap/2024 | Cash, cash equivalents, and restricted cash at beginning of period | 0 |
| 0001558370-25-007346 | 7 | 31 | CF | 0 | H | Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | us-gaap/2024 | Cash, cash equivalents, and restricted cash at end of period | 0 |
| 0001558370-25-007346 | 7 | 33 | CF | 0 | H | Interest Paid Net | us-gaap/2024 | Cash paid for interest | 0 |
| 0001558370-25-007346 | 7 | 34 | CF | 0 | H | Income Taxes Paid Net | us-gaap/2024 | Cash paid for income taxes, net | 0 |
| Field Name | Field Description |
|---|---|
| adsh | Accession Number. The 20-character string formed from the 18-digit number assigned by the SEC to each EDGAR submission. |
| report | Represents the report grouping. This field corresponds to the statement (stmt) field, which indicates the type of statement. The numeric value refers to the “R file” as posted on the EDGAR Web site. |
| line | Represents the tag’s presentation line order for a given report. Together with the statement and report field, presentation location, order and grouping can be derived. |
| stmt | The financial statement location to which the value of the “report” field pertains. |
| inpth | Value was presented “parenthetically” instead of in columns within the financial statements. For example: Receivables (net of allowance for bad debts of $200 in 2012) $700. |
| rfile | The type of interactive data file rendered on the EDGAR web site, H = .htm file, X = .xml file. |
| tag | The tag chosen by the filer for this line item. |
| version | The taxonomy identifier if the tag is a standard tag, otherwise adsh. |
| plabel | The text presented on the line item, also known as a “preferred” label. |
| negating | Flag to indicate whether the plabel is negating. |