Additional Balance Sheet and Cash Flow Information (Reconciliation Of Net Income To Net Cash Used By Operating Activities) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2017	Mar. 27, 2016
Cash flows from operating activities:
Net income	$ 186,369	$ 250,489
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles	54,900	50,027
Amortization of deferred loan origination costs	20,078	21,546
Amortization of financing origination fees	2,076	2,802
Pension and Other Postretirement Benefit Expense	7,475	9,503
Employee benefit plan contributions and payments	(29,957)	(29,641)
Stock compensation expense	6,992	7,053
Net change in wholesale finance receivables related to sales	(317,087)	(507,731)
Provision for credit losses	43,589	37,123
Deferred income taxes	3,989	3,636
Other, net	(5,334)	(7,302)
Changes in current assets and liabilities:
Accounts receivable, net	(39,230)	(57,885)
Finance receivables - accrued interest and other	5,142	685
Inventories	23,476	40,539
Accounts payable and accrued liabilities	182,928	222,800
Derivative instruments	3,120	1,196
Other	11,413	(3,709)
Total adjustments	(26,430)	(209,358)
Net cash provided by operating activities	$ 159,939	$ 41,131