Quarterly report [Sections 13 or 15(d)]

ACQUISITIONS - Preliminary Purchase Price Allocation (Details)

v3.25.1
ACQUISITIONS - Preliminary Purchase Price Allocation (Details) - USD ($)
$ in Millions
3 Months Ended 5 Months Ended
Mar. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Nov. 01, 2024
Business Acquisition [Line Items]        
Goodwill $ 1,767 $ 1,767 $ 1,768  
Stelco Holdings Inc        
Business Acquisition [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents 341 341   $ 341
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables 104 104   104
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory 719 719   726
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other 106 106   107
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 1,281 1,281   1,286
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 1,025 1,025   1,025
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets 250 250   250
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable (212) (212)   (212)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Employment Costs (29) (29)   (29)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses (7) (7)   (6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other (71) (71)   (71)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Current Liabilities, Pension and OPEB liabilities (14) (14)   (14)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities (439) (439)   (449)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Non-Current Liabilities, Asset retirement and environmental obligations (20) (20)   (20)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other (611) (611)   (616)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net 2,423 2,423   2,422
Goodwill 785 785   786
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net 3,208 3,208   $ 3,208
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash and Cash Equivalents   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Receivable   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory   (7)    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Current Assets   (1)    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment   (5)    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Employment Cost   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Expenses   (1)    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Current Liabilities   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Pension and OPEB Liability Non-current   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Income Taxes   10    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Asset retirement and environmental obligations   0    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Non-Current Liabilities   5    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Identifiable Assets Acquired   1    
Goodwill, Measurement Period Adjustment $ (1) (1)    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred   $ 0