Finance Receivables (Aging Of Past Due Finance Receivables Including Non Accrual Status Finance Receivables) (Detail) - USD ($) $ in Thousands	Mar. 27, 2016	Dec. 31, 2015	Mar. 29, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 149,974	$ 196,963	$ 126,004
Financing Receivable, Gross	7,532,750	7,015,331	6,981,412
Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Wholesale finance receivables, gross	22,900	32,800	19,000
Total Past Due	147,954	195,468	125,310
Financing Receivable, Gross	6,012,804	5,991,471	5,576,558
Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Wholesale finance receivables, gross	500	100	100
Total Past Due	2,020	1,495	694
Financing Receivable, Gross	1,519,946	1,023,860	1,404,854
Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,382,776	6,818,368	6,855,408
Financing Receivables, 1 to 29 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,864,850	5,796,003	5,451,248
Financing Receivables, 1 to 29 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,517,926	1,022,365	1,404,160
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	96,391	119,884	82,745
Financing Receivables, 30 to 59 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	94,984	118,996	82,302
Financing Receivables, 30 to 59 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,407	888	443
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	30,229	44,210	24,120
Financing Receivables, 60 to 89 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	30,094	43,680	24,013
Financing Receivables, 60 to 89 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	135	530	107
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	23,354	32,869	19,139
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	22,876	32,792	18,995
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 478	$ 77	$ 144