Finance Receivables (Finance Receivables) (Detail) - USD ($) $ in Thousands	Sep. 27, 2015	Mar. 29, 2015	Dec. 31, 2014	Sep. 28, 2014	Mar. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Gross	$ 7,223,729		$ 6,560,245	$ 6,791,503
Allowance for credit losses	(145,383)	$ (139,231)	(127,364)	(126,003)	$ (122,355)	$ (110,693)
Total Finance Receivables, Net	7,078,346		6,432,881	6,665,500
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Gross	6,194,332		5,607,924	5,757,927
Allowance for credit losses	(139,131)	(131,903)	(122,025)	(120,662)	(114,899)	(106,063)
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Gross	1,029,397		952,321	1,033,576
Allowance for credit losses	$ (6,252)	$ (7,328)	$ (5,339)	$ (5,341)	$ (7,456)	$ (4,630)