Off-Balance Sheet Finance Receivable Securitization Transactions (Summary On Expected Weighted-Average Cumulative Net Credit Losses) (Details)	12 Months Ended
	Dec. 31, 2009
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Expected weighted-average cumulative net credit losses	5.70%
Loan Securitized In 2008 [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Expected weighted-average cumulative net credit losses	5.75%
Loan Securitized In 2007 [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Expected weighted-average cumulative net credit losses	6.12%
Loan Securitized In 2006 [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Expected weighted-average cumulative net credit losses	5.32%