Long-Term Debt - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Feb. 29, 2024
Debt Instrument [Line Items]
Repayments of debt		$ 2,066	$ 550
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 4,500
Senior Notes [Member] | Senior Secured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 1,000
Debt instrument, stated interest				5.45%
Senior Notes [Member] | Senior Secured Notes Due 2034 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 1,300
Debt instrument, stated interest				5.60%
Senior Notes [Member] | Senior Secured Notes Due 2054 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 1,500
Debt instrument, stated interest				6.00%
Senior Notes [Member] | Senior Secured Notes Due 2064 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 700
Debt instrument, stated interest				6.10%
Senior Notes [Member] | Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest	5.00%	5.00%
Repayments of debt	$ 2,000