Finance Receivables (Aging Of Past Due Finance Receivables Including Non-Accrual Status Finance Receivables) (Details) (USD $) In Thousands	Sep. 25, 2011	Dec. 31, 2010	Sep. 26, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	$ 6,038,447	$ 6,191,158	$ 6,392,496
Retail [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	5,148,199
Wholesale [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	715,745
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	5,863,944
Retail [Member] | 31-60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	112,370
Wholesale [Member] | 31-60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	508
31-60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	112,878
Retail [Member] | 61-90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	37,491
Wholesale [Member] | 61-90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	197
61-90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	37,688
Retail [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	23,343
Wholesale [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	594
Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	23,937
Retail [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	173,204
Wholesale [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	1,299
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	174,503
Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	5,321,403	5,377,161	5,674,836
Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	$ 717,044	$ 813,997	$ 717,660