Transfers of Receivables - Assets and Liabilities of Securitizations (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Securitization Transactions [Line Items]
Cash and cash equivalents	$ 9,315	$ 10,393
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	123,827		$ 117,395
Related Debt	119,580	119,039
Total assets	138,932	138,576	$ 133,577
Consolidated Entities [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,900	2,800
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	71,000	74,600
Allowance for Credit Losses	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	70,600	74,100
Related Debt	55,000	56,400
Consolidated Entities [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,500	2,200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	61,500	62,100
Allowance for Credit Losses	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	61,100	61,600
Related Debt	48,400	48,200
Consolidated Entities [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,300	2,000
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	43,900	43,900
Allowance for Credit Losses	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	43,500	43,400
Related Debt	37,100	37,300
Consolidated Entities [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	200	200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	17,600	18,200
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	17,600	18,200
Related Debt	11,300	10,900
Consolidated Entities [Member] | Securitization Transactions [Member] | Net Investment in Operating Leases [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	400	600
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	9,500	12,500
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	9,500	12,500
Related Debt	6,600	8,200
Variable Interest Entity, Primary Beneficiary [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,438	2,274
Related Debt	45,758	45,451
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,400	2,300
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	60,300	61,900
Allowance for Credit Losses	300	300
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	60,000	61,600
Related Debt	45,800	45,400
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	2,000	1,700
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	50,800	49,400
Allowance for Credit Losses	300	300
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	50,500	49,100
Related Debt	39,200	37,200
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	1,800	1,500
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	33,700	31,700
Allowance for Credit Losses	300	300
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	33,400	31,400
Related Debt	28,200	26,600
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	200	200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	17,100	17,700
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	17,100	17,700
Related Debt	11,000	10,600
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Net Investment in Operating Leases [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	400	600
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	9,500	12,500
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	9,500	12,500
Related Debt	6,600	8,200
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	500	500
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	10,700	12,700
Allowance for Credit Losses	100	200
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	10,600	12,500
Related Debt	9,200	11,000
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	500	500
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	10,700	12,700
Allowance for Credit Losses	100	200
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	10,600	12,500
Related Debt	9,200	11,000
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	500	500
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	10,200	12,200
Allowance for Credit Losses	100	200
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	10,100	12,000
Related Debt	8,900	10,700
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	0	0
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	500	500
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	500	500
Related Debt	300	300
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Net Investment in Operating Leases [Member]
Securitization Transactions [Line Items]
Cash and cash equivalents	0	0
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	0	0
Allowance for Credit Losses	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	0	0
Related Debt	$ 0	$ 0