Guarantor Condensed Consolidating Financial Statements Guarantor Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$ 1,158,000	$ 545,000
Cash flows from investing activities
Purchases of retail finance receivables, net	(4,165,000)	(4,065,000)
Principal collections and recoveries on retail finance receivables	3,271,000	2,814,000
Proceeds from transfer of retail finance receivables, net	0	0
Net funding of commercial finance receivables	(1,024,000)	54,000
Purchases of leased vehicles, net	(5,158,000)	(2,319,000)
Proceeds from termination of leased vehicles	481,000	185,000
Acquisition of international operations	0	(1,049,000)
Purchases of property and equipment	(20,000)	(17,000)
Change in restricted cash	(176,000)	(154,000)
Change in other assets	1,000	6,000
Net change in due from affiliates	0	0
Net change in investment in affiliates	0	0
Net cash used in investing activities	(6,790,000)	(4,545,000)
Cash flows from financing activities
Net change in debt (original maturities less than three months)	757,000	198,000
Borrowings and issuance of secured debt	7,054,000	2,889,000
Payments on secured debt	(5,251,000)	(2,748,000)
Borrowings and issuance of unsecured debt	3,131,000	3,258,000
Payments on unsecured debt	(241,000)	(308,000)
Net capital contributions	0	0
Debt issuance costs	(26,000)	(41,000)
Net change in due to affiliates	0	0
Net cash provided by financing activities	5,424,000	3,248,000
Net decrease in cash and cash equivalents	(208,000)	(752,000)
Effect of foreign exchange rate changes on cash and cash equivalents	45,000	(101,000)
Cash and cash equivalents at beginning of period	3,061,000	2,974,000
Cash and cash equivalents at end of period	2,898,000	2,121,000
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	(144,000)	(62,000)
Cash flows from investing activities
Purchases of retail finance receivables, net	0	0
Principal collections and recoveries on retail finance receivables	0	0
Proceeds from transfer of retail finance receivables, net		0
Net funding of commercial finance receivables	0	0
Purchases of leased vehicles, net	0	0
Proceeds from termination of leased vehicles	0	0
Acquisition of international operations		(513,000)
Purchases of property and equipment	0	0
Change in restricted cash	0	0
Change in other assets	0	0
Net change in due from affiliates	(2,587,000)	(1,607,000)
Net change in investment in affiliates	0	(48,000)
Net cash used in investing activities	(2,587,000)	(2,168,000)
Cash flows from financing activities
Net change in debt (original maturities less than three months)	0	0
Borrowings and issuance of secured debt	0	0
Payments on secured debt	0	0
Borrowings and issuance of unsecured debt	2,744,000	2,250,000
Payments on unsecured debt	0	0
Net capital contributions	0	0
Debt issuance costs	(13,000)	(20,000)
Net change in due to affiliates	0	0
Net cash provided by financing activities	2,731,000	2,230,000
Net decrease in cash and cash equivalents	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	(537,000)	368,000
Cash flows from investing activities
Purchases of retail finance receivables, net	(4,466,000)	(2,955,000)
Principal collections and recoveries on retail finance receivables	359,000	120,000
Proceeds from transfer of retail finance receivables, net	2,866,000	1,168,000
Net funding of commercial finance receivables	(227,000)	150,000
Purchases of leased vehicles, net	0	0
Proceeds from termination of leased vehicles	0	0
Acquisition of international operations		(536,000)
Purchases of property and equipment	(15,000)	(8,000)
Change in restricted cash	(6,000)	4,000
Change in other assets	(60,000)	0
Net change in due from affiliates	(1,208,000)	(1,633,000)
Net change in investment in affiliates	336,000	571,000
Net cash used in investing activities	(2,421,000)	(3,119,000)
Cash flows from financing activities
Net change in debt (original maturities less than three months)	0	0
Borrowings and issuance of secured debt	0	0
Payments on secured debt	0	0
Borrowings and issuance of unsecured debt	0	0
Payments on unsecured debt	0	0
Net capital contributions	0	0
Debt issuance costs	0	0
Net change in due to affiliates	2,732,000	1,929,000
Net cash provided by financing activities	2,732,000	1,929,000
Net decrease in cash and cash equivalents	(226,000)	(822,000)
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	2,259,000	2,266,000
Cash and cash equivalents at end of period	2,033,000	1,444,000
Non-Guarantors [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	1,839,000	239,000
Cash flows from investing activities
Purchases of retail finance receivables, net	(4,388,000)	(2,950,000)
Principal collections and recoveries on retail finance receivables	2,912,000	2,694,000
Proceeds from transfer of retail finance receivables, net	1,823,000	672,000
Net funding of commercial finance receivables	(797,000)	(96,000)
Purchases of leased vehicles, net	(5,158,000)	(2,319,000)
Proceeds from termination of leased vehicles	481,000	185,000
Acquisition of international operations		0
Purchases of property and equipment	(5,000)	(9,000)
Change in restricted cash	(170,000)	(158,000)
Change in other assets	1,000	6,000
Net change in due from affiliates	0	0
Net change in investment in affiliates	0	0
Net cash used in investing activities	(5,301,000)	(1,975,000)
Cash flows from financing activities
Net change in debt (original maturities less than three months)	757,000	198,000
Borrowings and issuance of secured debt	7,114,000	2,889,000
Payments on secured debt	(5,251,000)	(2,748,000)
Borrowings and issuance of unsecured debt	387,000	1,008,000
Payments on unsecured debt	(241,000)	(308,000)
Net capital contributions	(336,000)	(523,000)
Debt issuance costs	(13,000)	(21,000)
Net change in due to affiliates	1,063,000	1,311,000
Net cash provided by financing activities	3,480,000	1,806,000
Net decrease in cash and cash equivalents	18,000	70,000
Effect of foreign exchange rate changes on cash and cash equivalents	45,000	(101,000)
Cash and cash equivalents at beginning of period	802,000	708,000
Cash and cash equivalents at end of period	865,000	677,000
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities
Purchases of retail finance receivables, net	4,689,000	1,840,000
Principal collections and recoveries on retail finance receivables	0	0
Proceeds from transfer of retail finance receivables, net	(4,689,000)	(1,840,000)
Net funding of commercial finance receivables	0	0
Purchases of leased vehicles, net	0	0
Proceeds from termination of leased vehicles	0	0
Acquisition of international operations		0
Purchases of property and equipment	0	0
Change in restricted cash	0	0
Change in other assets	60,000	0
Net change in due from affiliates	3,795,000	3,240,000
Net change in investment in affiliates	(336,000)	(523,000)
Net cash used in investing activities	3,519,000	2,717,000
Cash flows from financing activities
Net change in debt (original maturities less than three months)	0	0
Borrowings and issuance of secured debt	(60,000)	0
Payments on secured debt	0	0
Borrowings and issuance of unsecured debt	0	0
Payments on unsecured debt	0	0
Net capital contributions	336,000	523,000
Debt issuance costs	0	0
Net change in due to affiliates	(3,795,000)	(3,240,000)
Net cash provided by financing activities	(3,519,000)	(2,717,000)
Net decrease in cash and cash equivalents	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0