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Finance Receivables (Recorded Investment Of Retail Finance Receivables By Credit Quality Indicator) (Detail) (Retail [Member], USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Sep. 25, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables, gross $ 5,243,470 $ 5,087,490 $ 5,321,403
Prime [Member]
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables, gross 4,178,726 4,097,048 4,280,000
Sub-Prime [Member]
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables, gross $ 1,064,744 $ 990,442 $ 1,041,403