Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 248,574	$ 173,056
Cash flows from investing activities:
Payments to Acquire Receivables	2,870,107	2,453,086
Principal Collection and Recoveries on Receivables	2,040,006	1,880,176
Payments To Acquire Commercial Lending Receivable	173,158
Principal Collections and Recoveries on Commercial Lending Receivables	46,237
Purchases of Leased Vehicles	620,728	417,748
Proceeds from Termination of Leased Vehicles	17,806	21,061
Payments to Acquire Property, Plant, and Equipment	6,653	3,508
Payments to Acquire Businesses, Gross		9,601
Cash Acquired from Acquisition		9,283
Increase (Decrease) in Restricted Cash and Investments	(214,261)	11,080
Increase (Decrease) in Restricted Cash	(21,442)	(22,052)
Payments for (Proceeds from) Other Investing Activities	(18,374)	30,497
Net Cash Provided by (Used in) Investing Activities	(1,312,520)	(992,948)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, Depletion and Amortization, Nonproduction	112,361	41,044
Amortization of Deferred Loan Origination Fees, Net	(24,263)	(7,914)
Amortization of Finance Receivables Pemium	8,346	126,922
Amortization of Debt Discount (Premium)	(18,997)	(44,691)
Provision for Loan and Lease Losses	110,430	83,994
Deferred income taxes	(37,734)	37,856
Stock-based compensation expense	2,539	6,053
Other Noncash Income (Expense)	(8,897)	(17,180)
Changes in assets and liabilities:
Increase Decrease In Other Assets	(13,012)	26,044
Increase (Decrease) in Accounts Payable and Accrued Liabilities	19,182	(9,221)
Increase (Decrease) in Accrued Taxes Payable	5,301	(87,313)
Increase or Decrease in Intercompany Taxes Payable	177,855	143,941
Cash flows from financing activities:
Proceeds from Lines of Credit	962,924	1,820,637
Repayments of Lines of Credit	1,537,058	2,228,119
Proceeds from Issuance of Financial Services Obligations	4,100,000	2,750,000
Repayments of Financial Services Obligations	2,392,176	1,954,853
Proceeds from Issuance of Senior Long-term Debt		500,000
Payments of Debt Issuance Costs	22,991	34,735
Net Cash Provided by (Used in) Financing Activities	1,110,699	852,930
Net Cash Provided by (Used in) Operating Activities	581,685	472,591
Cash and Cash Equivalents, Period Increase (Decrease)	379,864	332,573
Effect of Exchange Rate on Cash and Cash Equivalents	(70)	(1,399)
Cash and cash equivalents at beginning of period	572,297	194,554
Cash and cash equivalents at end of period	$ 952,091	$ 525,728