Finance Receivables, Net (Details) - USD ($) $ in Millions		3 Months Ended
		Sep. 30, 2015	Jun. 30, 2015		Mar. 31, 2015		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		$ 134	$ 131		$ 131		$ 164		$ 158		$ 154
Provision		9	10		11		10		15		15
Charge-offs		(4)	(10)		(5)		(12)		(11)		(12)
Recoveries and other	[1]	(1)	3		(6)		(5)		2		1
Ending Balance		138	134		131		157		164		158
Financing Receivable, Collectively Evaluated for Impairment	[2]	4,137					4,418
Allowance for credit losses not included in the impairment evaluation		138					157
United States
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		42	43		41		49		48		45
Provision		1	1		2		(1)		1		3
Charge-offs		0	(1)		0		(2)		0		(1)
Recoveries and other	[1]	0	(1)		0		1		0		1
Ending Balance		43	42		43		47		49		48
Financing Receivable, Collectively Evaluated for Impairment	[2]	1,744					1,699
Canada
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		18	18		20		20		20		22
Provision		1	1		1		2		2		2
Charge-offs		(3)	(2)		(3)		(2)		(4)		(4)
Recoveries and other	[1]	0	1		0		1		2		0
Ending Balance		16	18		18		21		20		20
Financing Receivable, Collectively Evaluated for Impairment	[2]	366					404
Europe
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance		60	56		58		86		83		81
Provision		6	6		5		7		11		7
Charge-offs		(1)	(5)		(1)		(7)		(8)		(5)
Recoveries and other	[1]	(1)	3		(6)		(6)		0		0
Ending Balance		64	60		56		80		86		83
Financing Receivable, Collectively Evaluated for Impairment	[2]	1,562					1,952
Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	[3]	14	14		12		9		7		6
Provision	[3]	1	2		3		2		1		3
Charge-offs	[3]	0	(2)		(1)		(1)		1		(2)
Recoveries and other	[1],[3]	0	0		0		(1)		0		0
Ending Balance		15	$ 14	[3]	$ 14	[3]	9	[3]	$ 9	[3]	$ 7	[3]
Financing Receivable, Collectively Evaluated for Impairment	[2],[3]	$ 465					$ 363

[1] 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.

[2] Total Finance receivables exclude the allowance for credit losses of $138 and $157 at September 30, 2015 and 2014, respectively.

[3] Includes developing market countries and smaller units.