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Long-Term Debt - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Mar. 31, 2022
Debt Instrument [Line Items]            
Gain (loss) on extinguishment of debt $ (0) $ (0) $ (78) $ (12)    
Senior Notes Due 2023 [Member]            
Debt Instrument [Line Items]            
Debt instrument, stated interest         5.875%  
Debt instrument, redemption principal amount         $ 1,250  
Senior Notes [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 6,000
Senior Notes [Member] | Senior Secured Notes Due 2027 [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 1,000
Debt instrument, stated interest           3.125%
Senior Notes [Member] | Senior Secured Notes Due 2029 [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 500
Debt instrument, stated interest           3.375%
Senior Notes [Member] | Senior Secured Notes Due 2032 [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 2,000
Debt instrument, stated interest           3.625%
Senior Notes [Member] | Senior Secured Notes Due 2042 [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 500
Debt instrument, stated interest           4.375%
Senior Notes [Member] | Senior Secured Notes Due 2052 [Member]            
Debt Instrument [Line Items]            
Debt instrument, principal amount           $ 2,000
Debt instrument, stated interest           4.625%
Senior Notes [Member] | Senior Secured Notes Due 2023 [Member]            
Debt Instrument [Line Items]            
Debt instrument, stated interest         4.75%  
Debt instrument, redemption principal amount         $ 1,250