Finance Receivables (Recorded Investment Of Wholesale Finance Receivables By Internal Credit Quality Indicator) (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Dec. 31, 2011	Jun. 26, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	$ 905,038	$ 824,640	$ 733,789
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	905,038	824,640	733,789
Wholesale [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	9,467	13,048	12,386
Wholesale [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	5,902	5,052	21,088
Wholesale [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	7,897	14,361	12,887
Wholesale [Member] | Medium [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	808	3,032	12,861
Wholesale [Member] | Low [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	$ 880,964	$ 789,147	$ 674,567