Additional Balance Sheet and Cash Flow Information - Reconciliation Of Net Income To Net Cash Used By Operating Activities (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 26, 2021	Jun. 27, 2021	Mar. 28, 2021	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 26, 2021	Sep. 27, 2020
Cash flows from operating activities:
Net income	$ 162,973	$ 206,340	$ 259,144	$ 120,218	$ (92,217)	$ 69,695	$ 628,457	$ 97,696
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization							122,483	140,057
Amortization of deferred loan origination costs							63,265	52,374
Amortization of financing origination fees							10,426	10,628
Provision for long-term employee benefits							19,640	23,557
Employee benefit plan contributions and payments							(14,677)	(5,456)
Stock compensation expense							34,032	12,076
Net change in wholesale finance receivables related to sales							(22,031)	330,793
Provision for credit losses	$ 11,208			$ 7,835			4,935	178,433
Deferred income taxes							10,626	(18,978)
Other, net							2,094	(10,863)
Changes in current assets and liabilities:
Accounts receivable, net							(148,670)	29,630
Finance receivables – accrued interest and other							11,088	5,097
Inventories, net							31,874	273,668
Accounts payable and accrued liabilities							168,306	(16,922)
Other current assets							3,703	33,278
Total adjustments							297,094	1,037,372
Net cash provided by operating activities							$ 925,551	$ 1,135,068