Guarantor Consolidating Financial Statements Guarantor Income Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Guarantor [Line Items]
Financial Services Revenue	$ 415,064	$ 348,285	$ 1,176,107	$ 907,047
Other Income	18,875	15,300	56,625	47,855
Equity In Income Of Affiliates
Revenues	514,517	390,681	1,432,431	1,015,733
Operating Expenses	105,344	88,135	295,930	249,920
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	56,029	17,864	147,686	39,446
Provision for Loan and Lease Losses	78,166	50,941	188,596	134,935
Interest Expense	74,329	56,295	201,597	139,729
Costs and Expenses	313,868	213,235	833,809	564,030
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	200,649	177,446	598,622	451,703
Income Tax Expense (Benefit)	76,701	68,639	226,100	169,840
Net Income (Loss) Attributable to Parent	123,948	108,807	372,522	281,863
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	134,082	91,989	380,466	266,322
Parent Company [Member]
Guarantor [Line Items]
Other Income		11,766		40,346
Equity In Income Of Affiliates		115,205		295,761
Revenues	141,887	126,971	422,413	336,107
Operating Expenses		3,178		14,511
Interest Expense		15,853		45,478
Costs and Expenses	20,740	19,031	57,167	59,989
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	121,147	107,940	365,246	276,118
Income Tax Expense (Benefit)		(867)		(5,745)
Net Income (Loss) Attributable to Parent	123,948	108,807	372,522	281,863
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	134,082	91,989	380,466	266,322
Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	40,372	35,372	108,513	68,251
Other Income	41,322	61,458	151,821	232,652
Equity In Income Of Affiliates		133,112		364,974
Revenues	229,534	229,942	727,698	665,877
Operating Expenses		23,851		66,383
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease
Provision for Loan and Lease Losses		47,129	171,545	113,051
Interest Expense		69,023		247,432
Costs and Expenses	105,249	140,003	373,597	426,866
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	124,285	89,939	354,101	239,011
Income Tax Expense (Benefit)		(13,985)		(44,483)
Net Income (Loss) Attributable to Parent	130,169	103,924	388,189	283,494
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	130,169	103,924	388,189	283,494
Non-Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	374,692	312,913	1,067,594	838,796
Other Income	50,479	117,474	205,163	417,276
Revenues	505,749	457,483	1,472,456	1,316,903
Operating Expenses		61,106		169,026
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease		17,864		39,446
Provision for Loan and Lease Losses		3,812	17,051	21,884
Interest Expense		146,817		489,238
Costs and Expenses	271,603	229,599	736,327	719,594
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	234,146	227,884	736,129	597,309
Income Tax Expense (Benefit)		83,491		220,068
Net Income (Loss) Attributable to Parent	148,760	144,393	468,665	377,241
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	169,151	121,520	486,446	303,585
Consolidation, Eliminations [Member]
Guarantor [Line Items]
Other Income		(175,398)		(642,419)
Equity In Income Of Affiliates		(248,317)		(660,735)
Revenues	(362,653)	(423,715)	(1,190,136)	(1,303,154)
Interest Expense		(175,398)		(642,419)
Costs and Expenses	(83,724)	(175,398)	(333,282)	(642,419)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(278,929)	(248,317)	(856,854)	(660,735)
Net Income (Loss) Attributable to Parent	(278,929)	(248,317)	(856,854)	(660,735)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (299,320)	$ (225,444)	$ (874,635)	$ (587,079)