v3.20.4
Income Taxes - Schedule of Reconciliation of Taxes at Federal Statutory Rate to Provision for Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Tax at statutory federal rate $ 242 $ (139) $ (211)
State tax, net of federal benefit 4 5 3
Nondeductible executive compensations 184 62 39
Other nondeductible expenses 52 32 26
Excess tax benefits related to stock based compensation (666) (7) (44)
Foreign income rate differential 33 189 161
U.S. tax credits (181) (107) (80)
Noncontrolling interests and redeemable noncontrolling interests adjustment 5 (29) 32
GILTI inclusion 133    
Convertible debt   (4)  
Unrecognized tax benefits 1 17 1
Change in valuation allowance 485 91 131
Provision for income taxes $ 292 $ 110 $ 58