Net Investments in Operating Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property Subject to or Available for Operating Lease [Line Items]
Vehicles, at cost	$ 25,424	$ 24,182
Accumulated depreciation	(3,735)	(3,850)
Net investment in operating leases before allowance for credit losses	21,689	20,332
Net investment in operating leases	21,689	20,332
Operating Leases, Future Minimum Payments Receivable	$ 7,806
Length of lease contract	60 months
Maximum payment extension	six months
Total payment extension	twelve months
Lessor, Operating Lease, Payments to be Received, Next Rolling Twelve Months	$ 3,774
Lessor, Operating Lease, Payment to be Received, Year Two	2,594
Lessor, Operating Lease, Payment to be Received, Year Three	1,181
Lessor, Operating Lease, Payment to be Received, Year Four	243
Lessor, Operating Lease, Payment to be Received, Year Five	14
IncreaseDecreaseInRelatedPartySubventionReceivable, NIOL	152	110	$ 46
Affiliated Entity [Member]
Property Subject to or Available for Operating Lease [Line Items]
Related Party Transaction, Deferred Interest Supplements and Residual Support Payments on Net Investment in Operating Leases	1,900	1,300
Related Party Transaction, Earned Interest Supplements and Residual Support Costs, Net Investment in Operating Lease	1,000	900	1,200
Related Party Transactions, Cash Received and Interest Supplements, Net Investment in Operating Lease	$ 1,600	$ 1,100	$ 700