Finance Receivables (Aging Of Past Due Finance Receivables Including Non Accrual Status Finance Receivables) (Detail) - USD ($) $ in Thousands	Jun. 26, 2016	Dec. 31, 2015	Jun. 28, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 168,893	$ 196,963	$ 144,273
Total finance receivables	7,443,398	7,015,331	7,287,726
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, current	7,274,505	6,818,368	7,143,453
31-60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	108,649	119,884	97,495
61-90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	38,114	44,210	28,331
Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	22,130	32,869	18,447
Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	168,091	195,468	143,406
Total finance receivables	6,020,750	5,991,471	5,962,685
Retail | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, current	5,852,659	5,796,003	5,819,279
Retail | 31-60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	108,192	118,996	96,982
Retail | 61-90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	37,961	43,680	28,150
Retail | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,938	32,792	18,274
Wholesale
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	802	1,495	867
Total finance receivables	1,422,648	1,023,860	1,325,041
Wholesale | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, current	1,421,846	1,022,365	1,324,174
Wholesale | 31-60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	457	888	513
Wholesale | 61-90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	153	530	181
Wholesale | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 192	$ 77	$ 173