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Divestitures and Held for Sale - Summary of Long Lived Assets Held-for-sale (Detail) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Property and equipment, net $ 354 $ 402
Goodwill 851 980
Intangible assets, net $ 921 1,121
Asset Held For Sale [Member]    
Property and equipment, net   9
Goodwill   1
Intangible assets, net   10
Total assets held for sale   $ 20