Guarantor Consolidating Financial Statements Guarantor Income Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Guarantor [Line Items]
Financial Services Revenue	$ 403,317	$ 290,916	$ 761,573	$ 558,762
Other Income	83,194	38,969	156,341	66,290
Equity In Income Of Affiliates
Revenues	486,511	329,885	917,914	625,052
Operating Expenses	92,717	85,379	190,586	161,785
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	51,011	13,098	91,657	21,582
Provision for Loan and Lease Losses	61,876	44,570	110,430	83,994
Interest Expense	64,176	42,817	127,268	83,434
Costs and Expenses	269,780	185,864	519,941	350,795
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	216,731	144,021	397,973	274,257
Income Tax Expense (Benefit)	80,436	48,203	149,399	101,201
Net Income (Loss) Attributable to Parent	136,295	95,818	248,574	173,056
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	130,196	95,148	246,384	174,333
Parent Company [Member]
Guarantor [Line Items]
Other Income	11,183	14,319	22,125	28,580
Equity In Income Of Affiliates	141,260	100,511	258,401	180,556
Revenues	152,443	114,830	280,526	209,136
Operating Expenses	4,237	5,731	7,831	11,333
Interest Expense	14,272	15,592	28,596	29,625
Costs and Expenses	18,509	21,323	36,427	40,958
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	133,934	93,507	244,099	168,178
Income Tax Expense (Benefit)	(2,361)	(2,311)	(4,475)	(4,878)
Net Income (Loss) Attributable to Parent	136,295	95,818	248,574	173,056
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	130,196	95,148	246,384	174,333
Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	33,560	18,952	68,671	32,879
Other Income	46,766	80,422	109,969	171,194
Equity In Income Of Affiliates	170,386	137,032	319,524	231,862
Revenues	250,712	236,406	498,164	435,935
Operating Expenses	14,439	22,920	39,813	42,532
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease
Provision for Loan and Lease Losses	68,157	52,127	127,841	65,922
Interest Expense	42,242	75,516	100,694	178,409
Costs and Expenses	124,838	150,563	268,348	286,863
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	125,874	85,843	229,816	149,072
Income Tax Expense (Benefit)	(14,464)	(14,351)	(28,204)	(30,498)
Net Income (Loss) Attributable to Parent	140,338	100,194	258,020	179,570
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	140,338	100,194	258,020	179,570
Non-Guarantor Subsidiaries [Member]
Guarantor [Line Items]
Financial Services Revenue	369,757	271,964	692,902	525,883
Other Income	132,131	169,014	273,805	333,537
Equity In Income Of Affiliates
Revenues	501,888	440,978	966,707	859,420
Operating Expenses	74,041	56,728	142,942	107,920
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	51,011	13,098	91,657	21,582
Provision for Loan and Lease Losses	(6,281)	(7,557)	(17,411)	18,072
Interest Expense	114,548	176,495	247,536	342,421
Costs and Expenses	233,319	238,764	464,724	489,995
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	268,569	202,214	501,983	369,425
Income Tax Expense (Benefit)	97,261	64,865	182,078	136,577
Net Income (Loss) Attributable to Parent	171,308	137,349	319,905	232,848
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	155,236	119,822	317,295	182,065
Consolidation, Eliminations [Member]
Guarantor [Line Items]
Other Income	(106,886)	(224,786)	(249,558)	(467,021)
Equity In Income Of Affiliates	(311,646)	(237,543)	(577,925)	(412,418)
Revenues	(418,532)	(462,329)	(827,483)	(879,439)
Interest Expense	(106,886)	(224,786)	(249,558)	(467,021)
Costs and Expenses	(106,886)	(224,786)	(249,558)	(467,021)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(311,646)	(237,543)	(577,925)	(412,418)
Net Income (Loss) Attributable to Parent	(311,646)	(237,543)	(577,925)	(412,418)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (295,574)	$ (220,016)	$ (575,315)	$ (361,635)