Finance Receivables - Maturities and Investments in Direct Financing Leases (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Finance Receivables Maturity [Abstract]
Finance Receivables Due by Three Customers With Largest Receivables Balance	$ 1,400,000,000
North America Segment [Member]
Finance Receivables Maturity [Abstract]
2014	33,283,000,000
2015	10,719,000,000
2016	8,641,000,000
Thereafter	11,448,000,000
Finance receivables before unearned interest supplements	64,091,000,000
International Segment [Member]
Finance Receivables Maturity [Abstract]
2014	11,534,000,000
2015	4,214,000,000
2016	2,253,000,000
Thereafter	1,403,000,000
Finance receivables before unearned interest supplements	19,404,000,000
Consumer Portfolio Segment [Member] | Retail [Member]
Finance Receivables Maturity [Abstract]
Finance receivables before unearned interest supplements	51,699,000,000	48,468,000,000
Investment in Direct Financing Leases [Abstract]
Less: Unearned interest supplements	(1,502,000,000)	(1,486,000,000)
Consumer Portfolio Segment [Member] | Retail [Member] | North America Segment [Member]
Finance Receivables Maturity [Abstract]
2014	11,808,000,000
2015	10,134,000,000
2016	8,487,000,000
Thereafter	10,473,000,000
Finance receivables before unearned interest supplements	40,902,000,000	39,504,000,000
Investment in Direct Financing Leases [Abstract]
Less: Unearned interest supplements	(1,255,000,000)	(1,264,000,000)
Consumer Portfolio Segment [Member] | Retail [Member] | International Segment [Member]
Finance Receivables Maturity [Abstract]
2014	3,842,000,000
2015	3,363,000,000
2016	2,207,000,000
Thereafter	1,385,000,000
Finance receivables before unearned interest supplements	10,797,000,000	8,964,000,000
Investment in Direct Financing Leases [Abstract]
Less: Unearned interest supplements	(247,000,000)	(222,000,000)
Consumer Portfolio Segment [Member] | Finance Leases Financing Receivable [Member]
Investment in Direct Financing Leases [Abstract]
Total minimum lease rentals to be received	1,684,000,000	476,000,000
Initial direct costs	19,000,000	11,000,000
Estimated residual values	143,000,000	509,000,000
Less: Unearned income	(138,000,000)	(90,000,000)
Less: Unearned interest supplements	(40,000,000)	(19,000,000)
Recorded investment in direct financing leases	1,668,000,000	887,000,000
Less: Allowance for credit losses	(7,000,000)	(5,000,000)
Net investment in direct financing leases	1,661,000,000	882,000,000
Consumer Portfolio Segment [Member] | Finance Leases Financing Receivable [Member] | North America Segment [Member]
Investment in Direct Financing Leases [Abstract]
Total minimum lease rentals to be received	216,000,000	58,000,000
Initial direct costs	4,000,000	1,000,000
Estimated residual values	0	0
Less: Unearned income	(22,000,000)	(7,000,000)
Less: Unearned interest supplements	0	0
Recorded investment in direct financing leases	198,000,000	52,000,000
Less: Allowance for credit losses	(2,000,000)	(1,000,000)
Net investment in direct financing leases	196,000,000	51,000,000
Future Minimum Rentals From Direct Financing Leases [Abstract]
2014	73,000,000
2015	52,000,000
2016	50,000,000
2017	28,000,000
Thereafter	13,000,000
Consumer Portfolio Segment [Member] | Finance Leases Financing Receivable [Member] | International Segment [Member]
Investment in Direct Financing Leases [Abstract]
Total minimum lease rentals to be received	1,468,000,000	418,000,000
Initial direct costs	15,000,000	10,000,000
Estimated residual values	143,000,000	509,000,000
Less: Unearned income	(116,000,000)	(83,000,000)
Less: Unearned interest supplements	(40,000,000)	(19,000,000)
Recorded investment in direct financing leases	1,470,000,000	835,000,000
Less: Allowance for credit losses	(5,000,000)	(4,000,000)
Net investment in direct financing leases	1,465,000,000	831,000,000
Future Minimum Rentals From Direct Financing Leases [Abstract]
2014	568,000,000
2015	459,000,000
2016	272,000,000
2017	139,000,000
Thereafter	30,000,000
Commercial Portfolio Segment [Member] | Dealer Financing [Member] | North America Segment [Member]
Finance Receivables Maturity [Abstract]
2014	20,428,000,000
2015	583,000,000
2016	153,000,000
Thereafter	975,000,000
Finance receivables before unearned interest supplements	22,139,000,000
Commercial Portfolio Segment [Member] | Dealer Financing [Member] | International Segment [Member]
Finance Receivables Maturity [Abstract]
2014	7,317,000,000
2015	851,000,000
2016	46,000,000
Thereafter	18,000,000
Finance receivables before unearned interest supplements	8,232,000,000
Commercial Portfolio Segment [Member] | Other [Member] | North America Segment [Member]
Finance Receivables Maturity [Abstract]
2014	1,047,000,000
2015	2,000,000
2016	1,000,000
Thereafter	0
Finance receivables before unearned interest supplements	1,050,000,000
Commercial Portfolio Segment [Member] | Other [Member] | International Segment [Member]
Finance Receivables Maturity [Abstract]
2014	375,000,000
2015	0
2016	0
Thereafter	0
Finance receivables before unearned interest supplements	$ 375,000,000