Finance Receivables, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 162		$ 160		$ 170		$ 190		$ 203		$ 201
Provision	19		21		13		15		17		15
Charge-offs	(19)		(20)		(21)		(24)		(24)		(19)
Recoveries and other	4		1	[1]	(2)	[1]	5		(6)	[1]	6	[1]
Sale of finance receivables	(12)						(9)
Ending Balance	154		162		160		177		190		203
Financing Receivable, Collectively Evaluated for Impairment	4,832	[2]					5,829	[2]
Residual values not included in the impairment evaluation	1						3
Allowance for credit losses not included in the impairment evaluation	154						177
United States
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	54		51		50		73		74		75
Provision	3		6		2		3		3		2
Charge-offs	(3)		(2)		(2)		(8)		(5)		(4)
Recoveries and other	1		(1)	[1]	1	[1]	0		1	[1]	1	[1]
Sale of finance receivables	(12)						(9)
Ending Balance	43		54		51		59		73		74
Financing Receivable, Collectively Evaluated for Impairment	1,587	[2]					2,384	[2]
Canada
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	29		29		31		31		33		33
Provision	3		3		2		3		2		1
Charge-offs	(4)		(3)		(4)		(5)		(4)		(3)
Recoveries and other	2		0	[1]	0	[1]	2		0	[1]	2	[1]
Sale of finance receivables	0						0
Ending Balance	30		29		29		31		31		33
Financing Receivable, Collectively Evaluated for Impairment	696	[2]					811	[2]
Europe
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	74		76		85		83		93		91
Provision	12		10		9		9		11		12
Charge-offs	(12)		(14)		(15)		(11)		(15)		(12)
Recoveries and other	2		2	[1]	(3)	[1]	3		(6)	[1]	2	[1]
Sale of finance receivables	0						0
Ending Balance	76		74		76		84		83		93
Financing Receivable, Collectively Evaluated for Impairment	2,279	[2]					2,466	[2]
Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	5	[3]	4	[3]	4	[3]	3	[3]	3	[3]	2	[3]
Provision	1		2	[3]	0	[3]	0		1	[3]	0	[3]
Charge-offs	0		(1)	[3]	0	[3]	0		0	[3]	0	[3]
Recoveries and other	(1)		0	[1],[3]	0	[1],[3]	0		(1)	[1],[3]	1	[1],[3]
Sale of finance receivables	0						0
Ending Balance	5		5	[3]	4	[3]	3		3	[3]	3	[3]
Financing Receivable, Collectively Evaluated for Impairment	$ 270	[2],[3]					$ 168	[2],[3]

[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 residual values of $1 and $3, and the allowance for credit losses of $154 and $177 at September 30, 2013 and 2012, respectively.

[3] Includes developing market countries and smaller units.