v3.25.4
Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Employee Termination Benefits      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Beginning balance $ 990 $ 6 $ 11
Additions (reductions) charged to expense 191 987 (2)
Write-offs charged against the allowance, if any 191 987 (2)
Additions to deferred income tax expense 191 987 (2)
Payments (498) (3) (3)
Reduction of deferred income tax expense (498) (3) (3)
Ending balance 683 990 6
Expected Credit Losses      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Beginning balance 611 641 1,008
Current period provision (83) (30) (367)
Additions (reductions) charged to expense (136) 0 0
Write-offs charged against the allowance, if any (136) 0 0
Additions to deferred income tax expense (136) 0 0
Ending balance 392 611 641
Deferred Income Tax Valuation Allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Beginning balance 21,313 20,416 19,532
Additions (reductions) charged to expense 6,210 1,881 2,348
Write-offs charged against the allowance, if any 6,210 1,881 2,348
Additions to deferred income tax expense 6,210 1,881 2,348
Payments (662) (984) (1,464)
Reduction of deferred income tax expense (662) (984) (1,464)
Ending balance $ 26,861 $ 21,313 $ 20,416