Long-term Debt - Additional Information (Detail) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long-term debt, fair value	$ 10,000,000,000	$ 10,400,000,000
Committed credit facility agreement aggregated	5,000,000,000
Borrowings outstanding under credit facility	0	0
Short-term borrowings and current portion of long-term debt	3,475,000,000	1,051,000,000
Commercial paper programs mature in February 2028
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000,000,000
Commercial paper programs mature in December 2029
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	$ 1,800,000,000