Transfers of Receivables - Assets and Liabilities of Securitizations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 10,963	$ 14,349
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	117,517	131,725	$ 141,976
Debt	117,717	137,677
Required pool balance	11,400	14,100
Adjusted Pool Balance	600	2,300
Unencumbered Assets	900	1,100
Variable Interest Entity, Primary Beneficiary [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	3,407	2,822
Debt	38,274	46,770
Cash Collateral to Support Wholesale Transactions	1,150	25
Variable Interest Entity, Primary Beneficiary [Member] | Maximum [Member]
Securitization Transactions [Line Items]
Cash Contribution Collateral to Support Wholesale Securitization Program	3,700	524
Variable Interest Entity, Primary Beneficiary [Member] | Minimum [Member]
Securitization Transactions [Line Items]
Cash Contribution Collateral to Support Wholesale Securitization Program	25	0
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	3,400	2,800
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	50,800	64,700
Financing and Loans and Leases Receivable Allowance	300	400
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	50,500	64,300
Debt	38,300	46,800
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	1,700	2,000
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	31,600	35,800
Financing and Loans and Leases Receivable Allowance	300	400
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	31,300	35,400
Debt	24,500	28,400
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	1,300	200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	11,700	16,100
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	11,700	16,100
Debt	8,700	10,700
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	3,000	2,200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	43,300	51,900
Financing and Loans and Leases Receivable Allowance	300	400
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	43,000	51,500
Debt	33,200	39,100
Variable Interest Entity, Primary Beneficiary [Member] | Securitization Transactions [Member] | Net Investment in Operating Leases [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	400	600
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	7,500	12,800
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	7,500	12,800
Debt	5,100	7,700
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	400	400
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	7,700	8,200
Financing and Loans and Leases Receivable Allowance	100	100
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	7,600	8,100
Debt	7,100	7,800
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	400	400
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	7,400	7,900
Financing and Loans and Leases Receivable Allowance	100	100
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	7,300	7,800
Debt	6,900	7,600
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	0	0
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	300	300
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	300	300
Debt	200	200
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	400	400
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	7,700	8,200
Financing and Loans and Leases Receivable Allowance	100	100
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	7,600	8,100
Debt	7,100	7,800
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, at Carrying Value	0	0
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	0	0
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	0	0
Debt	0	0
Consolidated Entities [Member] | Securitization Transactions [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	3,800	3,200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	58,500	72,900
Financing and Loans and Leases Receivable Allowance	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	58,100	72,400
Debt	45,400	54,600
Consolidated Entities [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	12,000	16,400
Consolidated Entities [Member] | Securitization Transactions [Member] | Retail [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	2,100	2,400
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	39,000	43,700
Financing and Loans and Leases Receivable Allowance	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	38,600	43,200
Debt	31,400	36,000
Consolidated Entities [Member] | Securitization Transactions [Member] | Wholesale [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	1,300	200
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	12,000	16,400
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	12,000	16,400
Debt	8,900	10,900
Consolidated Entities [Member] | Securitization Transactions [Member] | Financing Receivable [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	3,400	2,600
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	51,000	60,100
Financing and Loans and Leases Receivable Allowance	400	500
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	50,600	59,600
Debt	40,300	46,900
Consolidated Entities [Member] | Securitization Transactions [Member] | Net Investment in Operating Leases [Member]
Securitization Transactions [Line Items]
Cash and Cash Equivalents, at Carrying Value	400	600
Finance Receivables and Net Investment in Operating Leases, Before Allowance for Credit Losses	7,500	12,800
Financing and Loans and Leases Receivable Allowance	0	0
Finance Receivables and Net Investment In Operating Leases, After Allowance for Credit Losses	7,500	12,800
Debt	$ 5,100	$ 7,700