Finance Receivables, Net - Allowance for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance receivable lease portfolio average maturity - low (years)	2 years
Finance receivable lease portfolio average maturity - high (years)	3 years
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 92	$ 108
Provision	28	24
Charge-offs	(34)	(41)
Recoveries and other	3	1
Allowance for credit loss, end of period	89	92
Finance Receivables Collectively Evaluated for Impairment	3,440	3,564
United States
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	53	56
Provision	20	12
Charge-offs	(15)	(17)
Recoveries and other	1	2
Allowance for credit loss, end of period	59	53
Finance Receivables Collectively Evaluated for Impairment	1,922	1,946
Canada
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	12	15
Provision	1	3
Charge-offs	(5)	(6)
Recoveries and other	2	0
Allowance for credit loss, end of period	10	12
Finance Receivables Collectively Evaluated for Impairment	320	335
Europe
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	25	35
Provision	7	9
Charge-offs	(14)	(18)
Recoveries and other	0	(1)
Allowance for credit loss, end of period	18	25
Finance Receivables Collectively Evaluated for Impairment	1,155	1,239
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	2	2
Provision	0	0
Charge-offs	0	0
Recoveries and other	0	0
Allowance for credit loss, end of period	2	2
Finance Receivables Collectively Evaluated for Impairment	$ 43	$ 44