Investments in Operating Leases, Net - Investments in Operating Leases, Net (Details) - USD ($) $ in Millions		Jun. 30, 2023	Mar. 31, 2023
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases, net		$ 29,131	$ 29,869
Investments in operating leases [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases	[1]	37,680	38,811
Investments In Operating Leases, Net [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Deferred income		(627)	(694)
Accumulated depreciation		$ (7,922)	$ (8,248)

[1] Includes gross securitized investments in operating leases of $14.5 billion and $15.3 billion as of June 30, 2023 and March 31, 2023, respectively.