Summary of Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Effective borrowing rate	3.90%	2.60%
Commercial paper	$ 2,842.4	$ 1,657.7
Medium-term notes	6,071.7	5,814.5
Commercial paper and medium-term notes	$ 8,914.1	$ 7,472.2
Commercial Paper
Debt Instrument [Line Items]
Effective borrowing rate	5.30%	4.10%
Medium-term Notes
Debt Instrument [Line Items]
Effective borrowing rate	3.20%	2.10%