Investments in Operating Leases, Net - Investments in Operating Leases, Net (Details) - USD ($) $ in Millions		Mar. 31, 2024	Mar. 31, 2023
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases, net		$ 28,013	$ 29,869
Investments in operating leases [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases	[1]	35,383	38,811
Investments In Operating Leases, Net [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Deferred income		(609)	(694)
Accumulated depreciation		$ (6,761)	$ (8,248)

[1] Includes gross securitized investments in operating leases of $13.8 billion and $15.3 billion as of March 31, 2024 and 2023, respectively.