Allowance for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivables, net	$ 121,950	$ 112,823
Financing Receivable, Allowance for Credit Loss	864	882	$ 845
Charge-offs	(575)	(405)
Recoveries	163	153
Provision for credit losses	417	278
Other	(23)	11
Financing Receivable, Gross	122,814	113,705
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 18
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	$ 860	879	838
Charge-offs	(568)	(401)
Recoveries	160	151
Provision for credit losses	412	280
Other	(23)	11
Financing Receivable, Gross	83,332	78,392
Non-Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Loss	4	3	$ 7
Charge-offs	(7)	(4)
Recoveries	3	2
Provision for credit losses	5	(2)
Other	0	0
Financing Receivable, Gross	$ 39,482	$ 35,313