Finance Receivables (Recorded Investment Of Retail Finance Receivables By Credit Quality Indicator) (Details) (Retail [Member], USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011	Mar. 27, 2011
Financing Receivable, Recorded Investment [Line Items]
Finance receivables, gross	$ 5,043,584	$ 5,087,490	$ 5,225,155
Prime [Member]
Financing Receivable, Recorded Investment [Line Items]
Finance receivables, gross	4,056,602	4,097,048	4,185,825
Sub-Prime [Member]
Financing Receivable, Recorded Investment [Line Items]
Finance receivables, gross	$ 986,982	$ 990,442	$ 1,039,330