Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND HEDGING (Details)

v3.24.3
DERIVATIVE INSTRUMENTS AND HEDGING (Details)
3 Months Ended 9 Months Ended
Jul. 12, 2024
USD ($)
Sep. 30, 2024
USD ($)
MMBtu
MWh
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
MMBtu
MWh
Sep. 30, 2023
USD ($)
Dec. 31, 2023
MWh
MMBtu
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Reclassification of net losses       $ 97,000,000    
Changes in fair value of foreign currency contracts, net   $ (7,000,000) $ 0 (7,000,000) $ 0  
Stelco Holdings Inc            
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Expected enterprise value of acquisition $ 2,500,000,000          
Other current assets            
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value   $ 3,000,000   $ 3,000,000    
Commodity Contract | Natural Gas            
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Notional Amount | MMBtu   157,430,000   157,430,000   168,590,000
Commodity Contract | Electricity            
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Notional Amount | MWh   3,499,413   3,499,413   3,501,898
Foreign Exchange Option | Canada, Dollars            
Derivative Instruments and Hedging Activities Disclosures [Line Items]            
Derivative, Notional Amount   $ 1,500,000,000   $ 1,500,000,000