Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 105,943	$ 112,279
Cash flows from investing activities:
Payments to Acquire Receivables	1,343,002	1,364,662
Principal Collection and Recoveries on Receivables	1,096,275	1,015,918
Payments To Acquire Commercial Lending Receivable	1,036,138
Principal Collections and Recoveries on Commercial Lending Receivables	763,074
Purchases of Leased Vehicles	510,052	305,370
Proceeds from Termination of Leased Vehicles	37,274	6,922
Payments to Acquire Property, Plant, and Equipment	1,432	3,952
Increase (Decrease) in Restricted Cash and Investments	49,305	(62,710)
Increase (Decrease) in Restricted Cash	38,610	(15,452)
Payments for (Proceeds from) Other Investing Activities	(4,923)	(10,079)
Net Cash Provided by (Used in) Investing Activities	(1,076,993)	(562,903)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, Depletion and Amortization, Nonproduction	92,166	50,565
Amortization of Deferred Loan Origination Fees, Net	(17,902)	(11,087)
Amortization of Finance Receivables Pemium	(5,032)	20,169
Amortization of Debt Discount (Premium)	(4,521)	(9,944)
Provision for Loan and Lease Losses	93,606	48,554
Deferred income taxes	25,487	(9,652)
Stock-based compensation expense	1,337	584
Other Noncash Income (Expense)	(300)	(5,556)
Changes in assets and liabilities:
Increase Decrease In Other Assets	(7,132)	(1,943)
Increase (Decrease) in Accounts Payable and Accrued Liabilities	(8,306)	25,674
Increase (Decrease) in Accrued Taxes Payable	3,676	4,108
Increase or Decrease in Intercompany Taxes Payable	36,184	72,378
Cash flows from financing activities:
Proceeds from Lines of Credit	2,383,928	453,774
Repayments of Lines of Credit	11,253	778,054
Proceeds from Issuance of Financial Services Obligations	1,000,000	1,800,000
Repayments of Financial Services Obligations	989,104	1,168,700
Payments of Debt Issuance Costs	13,167	4,761
Net Cash Provided by (Used in) Financing Activities	2,370,404	302,259
Net Cash Provided by (Used in) Operating Activities	315,206	296,129
Cash and Cash Equivalents, Period Increase (Decrease)	1,608,617	35,485
Effect of Exchange Rate on Cash and Cash Equivalents	(1,241)	1,009
Cash and cash equivalents at beginning of period	1,289,494	572,297
Cash and cash equivalents at end of period	$ 2,896,870	$ 608,791