Finance Receivables (Changes In The Allowance For Credit Losses On Finance Receivables) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 25, 2011	Sep. 25, 2011	Sep. 26, 2010
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	$ 144,404	$ 173,589	$ 181,985
Provision for finance credit losses	6,189	5,005
Charge-offs	(28,809)	(87,233)
Recoveries	10,835	41,258
Balance, end of period	132,619	132,619	181,985
Retail [Member]
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	130,948	157,791
Provision for finance credit losses	11,833	12,676
Charge-offs	(28,636)	(86,730)
Recoveries	10,835	41,243
Balance, end of period	124,980	124,980
Wholesale [Member]
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	13,456	15,798
Provision for finance credit losses	(5,644)	(7,671)
Charge-offs	(173)	(503)
Recoveries		15
Balance, end of period	$ 7,639	$ 7,639