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Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Accruals, including casualty and other claims $ 289 $ 360
Compensation and benefits, including postretirement benefits 21 55
Other 157 155
Total gross deferred tax assets 467 570
Less valuation allowance (42) (31)
Net deferred tax assets 425 539
Deferred tax liabilities:    
Property (7,397) (7,218)
Other (448) (546)
Total deferred tax liabilities (7,845) (7,764)
Deferred income taxes $ (7,420) $ (7,225)