Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS - Preliminary Purchase Price Allocation (Details)

v3.25.4
ACQUISITIONS - Preliminary Purchase Price Allocation (Details) - USD ($)
$ in Millions
14 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Nov. 01, 2024
Dec. 31, 2023
Business Combination [Line Items]        
Goodwill $ 1,814 $ 1,768   $ 1,005
Stelco Holdings Inc        
Business Combination [Line Items]        
Cash and cash equivalents 341   $ 341  
Accounts receivable 104   104  
Inventories 715   726  
Other current assets 105   107  
Property, plant and equipment 1,282   1,286  
Intangible assets 1,025   1,025  
Other non-current assets 250   250  
Accounts payable (212)   (212)  
Accrued employment costs (29)   (29)  
Accrued expenses 7   6  
Other current liabilities (68)   (71)  
Pension and OPEB liability, non-current 14   14  
Deferred income taxes 439   449  
Asset retirement and environmental obligations 39   20  
Other non-current liabilities (608)   (616)  
Net identifiable assets acquired 2,406   2,422  
Goodwill 802   786  
Total net assets acquired 3,208   $ 3,208  
Measurement Period Adjustments, Cash and cash equivalents 0      
Measurement Period Adjustments, Accounts receivable, net 0      
Measurement Period Adjustments, Inventories (11)      
Measurement Period Adjustments, Other current assets (2)      
Measurement Period Adjustments, Property, plant and equipment (4)      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles 0      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Non-Current Assets 0      
Measurement Period Adjustments, Accounts payable 0      
Measurement Period Adjustments, Accrued employment costs 0      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Expenses (1)      
Measurement Period Adjustments, Other current liabilities 3      
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 (19)      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Non-Current Liabilities 8      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Identifiable Assets Acquired (16)      
Measurement Period Adjustments, Goodwill 16      
Measurement Period Adjustments, Total net assets acquired $ 0