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Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]      
Other comprehensive income (loss) before reclassifications $ (7) $ (292) $ 272
Derivative financial instruments, net of tax 10 (21) 46
Changes in derivative financial instruments, tax $ 4 $ 2 $ 13