Allowance for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivables, net	$ 92,350	$ 105,070
Financing Receivable, Allowance for Credit Loss	925	1,305	$ 513
Charge-offs	(275)	(470)
Recoveries	210	169
Provision for credit losses	(310)	828
Other	(5)	13
Financing Receivable, Gross	93,275	106,375
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 380
Financing Receivable, Threshold Period Past Due, Writeoff	120 days
Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 903	1,245	496
Charge-offs	(272)	(441)
Recoveries	202	161
Provision for credit losses	(270)	771
Other	(2)	11
Financing Receivable, Gross	73,545	78,170
Non-Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Loss	22	60	$ 17
Charge-offs	(3)	(29)
Recoveries	8	8
Provision for credit losses	(40)	57
Other	(3)	2
Financing Receivable, Gross	19,730	28,205
Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivables, net	0	252
Accounting Standards Update 2016-13 [Member] | Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivables, net	0	247
Accounting Standards Update 2016-13 [Member] | Non-Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivables, net	$ 0	$ 5