XML 74 R51.htm IDEA: XBRL DOCUMENT v3.20.4
Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Deferred tax assets:    
Compensation and benefits, including postretirement benefits $ 218 $ 222
Accruals, including casualty and other claims 93 89
Other 198 202
Total gross deferred tax assets 509 513
Less valuation allowance (57) (54)
Net deferred tax assets 452 459
Deferred tax liabilities:    
Property (6,820) (6,714)
Other (554) (560)
Total deferred tax liabilities (7,374) (7,274)
Deferred income taxes $ (6,922) $ (6,815)