Finance Receivables (Changes In Allowance For Credit Losses On Finance Receivables) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for Loan and Lease Losses	$ 37,123	$ 26,247
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	147,178	127,364
Charge-offs	(39,644)	(32,733)
Recoveries	11,527	11,942
Balance, end of period	156,184	132,820
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for Loan and Lease Losses	35,524	22,543
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	139,320	122,025
Charge-offs	(39,644)	(32,733)
Recoveries	11,527	11,942
Balance, end of period	146,727	123,777
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for Loan and Lease Losses	1,599	3,704
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	7,858	5,339
Charge-offs	0	0
Recoveries	0	0
Balance, end of period	$ 9,457	$ 9,043