Finance Receivables, Net (Details) - USD ($) $ in Millions		3 Months Ended
		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Sep. 30, 2016	Jun. 30, 2016		Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		$ 108		$ 111		$ 110		$ 125	$ 126		$ 118	[1]
Provision		4		6		9		9	8		10
Charge-offs		(6)		(14)		(10)		(6)	(8)		(6)
Recoveries and other		10	[2]	5	[2]	2	[2]	1	(1)	[2]	4	[2]
Ending Balance		116		108		111		129	125		126
Financing Receivable, Collectively Evaluated for Impairment	[3]	3,788						3,964
Allowance for credit losses not included in the impairment evaluation		116						129
United States
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		48		53		55		54	57		54	[1]
Provision		1		4		4		3	0		4
Charge-offs		(2)		(10)		(6)		(1)	(3)		(2)
Recoveries and other	[2]	8		1		0		1	0		1
Ending Balance		55		48		53		57	54		57
Financing Receivable, Collectively Evaluated for Impairment	[3]	1,992						2,139
Canada
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		16		16		16		18	18		17	[1]
Provision		0		1		0		1	1		1
Charge-offs		(1)		(1)		(2)		(2)	(2)		(2)
Recoveries and other	[2]	1		0		2		0	1		2
Ending Balance		16		16		16		17	18		18
Financing Receivable, Collectively Evaluated for Impairment	[3]	391						377
Europe
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		42		40		37		51	49		45	[1]
Provision		3		1		5		5	7		5
Charge-offs		(3)		(3)		(2)		(3)	(3)		(2)
Recoveries and other	[2]	1		4		0		0	(2)		1
Ending Balance		43		42		40		53	51		49
Financing Receivable, Collectively Evaluated for Impairment	[3]	1,339						1,382
Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	[4]	2		2		2		2	2		2	[1]
Provision	[4]	0		0		0		0	0		0
Charge-offs	[4]	0		0		0		0	0		0
Recoveries and other	[2],[4]	0		0		0		0	0		0
Ending Balance	[4]	2		$ 2		$ 2		2	$ 2		$ 2
Financing Receivable, Collectively Evaluated for Impairment	[3],[4]	$ 66						$ 66

[1] In the first quarter 2016, as a result of an internal reorganization, a U.S. leasing unit previously classified in Other was reclassified to the U.S. Prior year amounts have been revised to conform to current year presentation.

[2] Includes the impacts of foreign currency translation and adjustments to reserves necessary to reflect events of non-payment such as customer accommodations and contract terminations.

[3] Total Finance receivables exclude the allowance for credit losses of $116 and $129 at September 30, 2017 and 2016, respectively.

[4] Includes developing market countries and smaller units.