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		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
Cash flows from operating activities:
Net income	$ 113,855	$ 68,209	$ 530,956	$ 513,445
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles			196,461	163,974
Amortization of deferred loan origination costs			61,213	62,052
Amortization of financing origination fees			6,207	6,112
Provision for long-term employee benefits			28,162	22,427
Employee benefit plan contributions and payments			(11,035)	(43,060)
Stock compensation expense			29,122	25,581
Net change in wholesale finance receivables related to sales			(18,400)	36,678
Provision for credit losses	$ 23,530	$ 29,253	72,462	99,059
Deferred income taxes			1,457	(5,151)
Other, net			29,340	(11,122)
Changes in current assets and liabilities:
Accounts receivable, net			(14,784)	(29,167)
Finance receivables - accrued interest and other			1,374	317
Inventories			8,270	50,016
Accounts payable and accrued liabilities			183,606	88,758
Derivative instruments			1,227	2,752
Other			16,917	(33,596)
Total adjustments			591,599	435,630
Net cash provided by operating activities			$ 1,122,555	$ 949,075