v3.26.3
DERIVATIVE INSTRUMENTS AND HEDGING (Details)
$ in Millions
9 Months Ended
Sep. 30, 2026
USD ($)
Tons
MMBtu
MWh
Dec. 31, 2025
MWh
Tons
MMBtu
Commodity Contract    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Reclassification of net losses $ (51)  
Commodity Contract | Natural Gas    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount | MMBtu 124,905,000 139,300,000
Commodity Contract | Electricity    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount | MWh 2,438,620 1,974,380
Cash-Settled Sales Swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Reclassification of net losses $ (130)  
Cash-Settled Sales Swaps | HRC    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount | Tons 566,434 220,220