v3.26.1
Risk Management - CF Hedging Effect on the Income Statements (Details) - Designated as Hedging Instrument - Cash flow hedge - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) recognized in OCI on derivative $ 49 $ 170 $ (206) $ 160
Gain/(loss) reclassified from Accumulated OCI into income (66) 59 (92) 65
Gain/(loss) to be reclassified within twelve months     6  
Energy commodity derivative contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) recognized in OCI on derivative 53 120 (193) 90
Energy commodity derivative contracts | Statement of Income Location Balance [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) reclassified from Accumulated OCI into income     0 (1)
Energy commodity derivative contracts | Statement of Income Location Balance [Axis]: us-gaap:Revenues        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) reclassified from Accumulated OCI into income (60) 10 (76) (6)
Foreign currency contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) recognized in OCI on derivative (4) 50 (13) 70
Foreign currency contracts | Statement of Income Location Balance [Axis]: us-gaap:OtherNonoperatingIncomeExpense        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain/(loss) reclassified from Accumulated OCI into income $ (6) $ 49 $ (16) $ 72