Debt - Borrowings and Repayments (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt
New borrowings	$ 4,412	$ 6,885
Debt repayments	4,570	$ 6,548
Commercial Paper Program [Member]
Debt
Commercial paper repayments	4,500
Commercial paper borrowings	4,400
Financing leases and other [Member]
Debt
Debt repayments	42
Non-cash financing lease incurred	$ 25