v3.26.1
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Aggregate Amount of Net Financial Instrument Positions (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total $ (800) $ (287)
Less: current portion (499) (248)
Long-term portion (301) (39)
Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 547  
Less: current portion 110  
Long-term portion 437  
Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 1,347  
Less: current portion 609  
Long-term portion 738  
IFRS 9 PPAs | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total (418) (175)
IFRS 9 PPAs | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 45  
IFRS 9 PPAs | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 463  
Energy derivative contracts | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total (36) (50)
Energy derivative contracts | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 68  
Energy derivative contracts | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 104  
Interest rate swaps | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 62 26
Interest rate swaps | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 69  
Interest rate swaps | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 7  
Foreign exchange swaps | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total (500) (196)
Foreign exchange swaps | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 15  
Foreign exchange swaps | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 515  
Investments in debt securities | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 350 320
Investments in debt securities | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 350  
Investments in debt securities | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 0  
Tax equity | Net Assets (Liabilities)    
Disclosure of derivative assets liabilities net position [Line Items]    
Total (258) $ (212)
Tax equity | Assets    
Disclosure of derivative assets liabilities net position [Line Items]    
Total 0  
Tax equity | Liabilities    
Disclosure of derivative assets liabilities net position [Line Items]    
Total $ 258