Finance Receivables - Delinquency (Details) - Retail Finance Receivables - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
2022	$ 29,090	$ 27,638
2021	18,745	17,324
2020	11,081	7,084
2019	3,992	3,918
2018	1,824	1,607
Prior	589	522
Total	$ 65,322	$ 58,093
Financing receivable total (percent)	100.00%	100.00%
0 - 30 days | Performing Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 28,676	$ 27,270
2021	18,128	16,945
2020	10,702	6,772
2019	3,743	3,721
2018	1,685	1,478
Prior	493	440
Total	$ 63,426	$ 56,626
Financing receivable total (percent)	97.10%	97.50%
31 - 60 days | Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 310	$ 273
2021	452	276
2020	275	230
2019	184	147
2018	103	97
Prior	69	60
Total	$ 1,393	$ 1,083
Financing receivable total (percent)	2.10%	1.80%
Greater than 60 days | Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 93	$ 83
2021	150	93
2020	98	76
2019	62	46
2018	35	30
Prior	26	21
Total	$ 465	$ 349
Financing receivable total (percent)	0.70%	0.60%
Finance receivables more than 30 days delinquent | Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 403	$ 356
2021	603	369
2020	373	306
2019	246	193
2018	138	127
Prior	95	81
Total	$ 1,857	$ 1,432
Financing receivable total (percent)	2.80%	2.40%
In repossession | Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 11	$ 12
2021	14	10
2020	6	6
2019	4	4
2018	2	2
Prior	1	1
Total	$ 39	$ 35
Financing receivable total (percent)	0.10%	0.10%
Finance receivables more than 30 days delinquent or in repossession | Nonperforming Financial Instruments
Financing Receivable, Past Due [Line Items]
2022	$ 414	$ 368
2021	617	379
2020	380	312
2019	249	197
2018	140	129
Prior	96	82
Total	$ 1,896	$ 1,467
Financing receivable total (percent)	2.90%	2.50%