Long-term Debt - Additional Information (Detail) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, fair value	$ 11,300,000,000	$ 10,200,000,000
Committed credit facility agreement aggregated	5,000,000,000
Committed credit facility agreement, unused borrowing capacity	4,600,000,000
Short-term borrowings and current portion of long-term debt	1,033,000,000	1,123,000,000
Commercial paper programs mature in February 2027
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000,000,000
Commercial paper programs mature in December 2028
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	3,000,000,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt		$ 0
Short-term borrowings and current portion of long-term debt	$ 374,000,000