Finance Receivables (Changes In The Allowance For Credit Losses On Finance Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Mar. 27, 2011
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	$ 125,449	$ 173,589
Provision for credit losses	9,014	5,606
Charge-offs	(25,852)	(35,191)
Recoveries	13,892	15,680
Balance, end of period	122,503	159,684
Retail [Member]
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	116,112	157,791
Provision for credit losses	8,705	3,439
Charge-offs	(25,852)	(35,191)
Recoveries	13,892	15,665
Balance, end of period	112,857	141,704
Wholesale [Member]
Changes In The Allowance For Credit Losses On Finance Receivables [Line Items]
Balance, beginning of period	9,337	15,798
Provision for credit losses	309	2,167
Recoveries		15
Balance, end of period	$ 9,646	$ 17,980