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Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]    
Definite-lived intangible assets, amortization expense $ 93 $ 84
Estimates annual amortization expense, 2020 85  
Estimates annual amortization expense, 2021 66  
Estimates annual amortization expense, 2022 53  
Estimates annual amortization expense, 2023 47  
Estimates annual amortization expense, 2024 $ 43