XML 113 R95.htm IDEA: XBRL DOCUMENT v3.20.4
Income Taxes - Schedule of Deferred Tax Assets and Liabilities By Report Caption (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Deferred Tax Assets Liabilities Net [Line Items]    
Long-term assets-deferred income taxes $ 695 $ 386
Long-term liabilities-deferred income taxes (964) (1,096)
Deferred tax assets liabilities net $ (269) $ (710)