v3.25.4
Employee Benefit Plans - Before-Tax Amounts not Recognized in Net Periodic Benefit Cost and Sources of Change in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Pension Benefits | U.S.    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]    
Net actuarial gain (loss) arising during the period $ 5 $ 3
Amortization of actuarial loss included in income (loss) 15 8
Net change during the period 20 11
Prior service credit (cost) arising during the period 0 0
Amortization of prior service cost (credit) included in income (loss) 0 0
Net change during the period 0 0
Pension Benefits | Int’l.    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]    
Net actuarial gain (loss) arising during the period 34 83
Amortization of actuarial loss included in income (loss) 47 57
Net change during the period 81 140
Prior service credit (cost) arising during the period 2 (57)
Amortization of prior service cost (credit) included in income (loss) 3 0
Net change during the period 5 (57)
Other Benefits    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]    
Net actuarial gain (loss) arising during the period 3 (5)
Amortization of actuarial loss included in income (loss) (1) 0
Net change during the period 2 (5)
Prior service credit (cost) arising during the period 2 0
Amortization of prior service cost (credit) included in income (loss) (24) (38)
Net change during the period $ (22) $ (38)