Finance Receivables, Net - Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 89	$ 92
Provision	66	9
Charge-offs	(8)	(8)
Recoveries and other	(1)	0
Ending Balance	146	93
Finance receivables collectively evaluated for impairment	$ 3,287	3,466
Loss rates of customers with investment grade credit quality	1.00%
Loss rates of customers with non investment grade credit quality, low range	2.00%
Loss rates of customers with non investment grade credit quality, high range	5.00%
Loss rates of customers with substandard doubtful credit quality - low	7.00%
Loss rates of customers with substandard doubtful credit quality - high	10.00%
Total United States
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 59	53
Provision	35	4
Charge-offs	(3)	(4)
Recoveries and other	0	0
Ending Balance	91	53
Finance receivables collectively evaluated for impairment	1,866	1,895
Canada
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	11	12
Provision	6	1
Charge-offs	(1)	(1)
Recoveries and other	(1)	0
Ending Balance	15	12
Finance receivables collectively evaluated for impairment	289	336
EMEA
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	19	27
Provision	25	4
Charge-offs	(4)	(3)
Recoveries and other	0	0
Ending Balance	40	28
Finance receivables collectively evaluated for impairment	$ 1,132	$ 1,235