Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 372,522	$ 281,863
Cash flows from investing activities:
Payments to Acquire Receivables	4,353,965	3,793,696
Principal Collection and Recoveries on Receivables	3,049,533	2,816,607
Payments To Acquire Commercial Lending Receivable	581,499
Principal Collections and Recoveries on Commercial Lending Receivables	299,731
Purchases of Leased Vehicles	857,433	584,726
Proceeds from Termination of Leased Vehicles	32,607	32,017
Payments to Acquire Property, Plant, and Equipment	10,911	5,858
Payments to Acquire Businesses, Gross		9,601
Cash Acquired from Acquisition		9,283
Increase (Decrease) in Restricted Cash and Investments	(200,554)	3,114
Increase (Decrease) in Restricted Cash	(18,956)	(6,359)
Payments for (Proceeds from) Other Investing Activities	(6,143)	24,221
Net Cash Provided by (Used in) Investing Activities	(2,196,284)	(1,556,950)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, Depletion and Amortization, Nonproduction	178,444	72,397
Amortization of Deferred Loan Origination Fees, Net	(37,635)	(14,910)
Amortization of Finance Receivables Pemium	(2,075)	143,775
Amortization of Debt Discount (Premium)	(26,068)	(57,698)
Provision for Loan and Lease Losses	188,596	134,935
Deferred income taxes	(34,002)	41,159
Stock-based compensation expense	3,141	9,585
Other Noncash Income (Expense)	(9,072)	(23,148)
Changes in assets and liabilities:
Increase Decrease In Other Assets	(4,399)	27,743
Increase (Decrease) in Accounts Payable and Accrued Liabilities	48,159	(500)
Increase (Decrease) in Accrued Taxes Payable	5,985	(79,518)
Increase or Decrease in Intercompany Taxes Payable	247,750	203,155
Cash flows from financing activities:
Proceeds from Lines of Credit	1,199,707	2,717,534
Repayments of Lines of Credit	1,752,095	2,991,574
Proceeds from Issuance of Financial Services Obligations	5,400,000	3,650,000
Repayments of Financial Services Obligations	3,306,678	2,821,473
Proceeds from Issuance of Senior Long-term Debt	1,000,000	500,000
Payments of Debt Issuance Costs	43,547	44,968
Extinguishment of Debt, Amount	(505)	(75,164)
Net Cash Provided by (Used in) Financing Activities	2,496,882	934,355
Net Cash Provided by (Used in) Operating Activities	931,346	738,838
Cash and Cash Equivalents, Period Increase (Decrease)	1,231,944	116,243
Effect of Exchange Rate on Cash and Cash Equivalents	1,740	(3,582)
Cash and cash equivalents at beginning of period	572,297	194,554
Cash and cash equivalents at end of period	$ 1,805,981	$ 307,215