Finance Receivables (Aging Of Past Due Finance Receivables Including Non Accrual Status Finance Receivables) (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Dec. 31, 2011	Jun. 26, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	$ 5,225,779	$ 5,087,490	$ 5,374,055
Finance receivables, gross	905,038	824,640	733,789
Finance receivables, gross	6,130,817	5,912,130	6,107,844
Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	5,225,779	5,087,490	5,374,055
Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	905,038	824,640	733,789
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	6,004,738	5,738,321	5,935,776
Current [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	5,101,847	4,915,711	5,205,300
Current [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	902,891	822,610	730,476
31-60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	85,983	108,150	115,979
31-60 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	84,858	107,373	115,163
31-60 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	1,125	777	816
61-90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	24,715	37,281	35,247
61-90 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	24,247	36,937	34,860
61-90 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	468	344	387
Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	15,381	28,378	20,842
Greater Than 90 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	14,827	27,469	18,732
Greater Than 90 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	554	909	2,110
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	126,079	173,809	172,068
Total Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	123,932	171,779	168,755
Total Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance receivables, gross	$ 2,147	$ 2,030	$ 3,313