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				6 Months Ended
	Jun. 28, 2020	Mar. 29, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 28, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (92,217)	$ 69,695	$ 195,631	$ 127,945	$ (22,522)	$ 323,576
Adjustments to reconcile Net (loss) income to Net cash provided by operating activities:
Depreciation and amortization					95,454	125,386
Amortization of deferred loan origination costs					33,796	38,036
Amortization of financing origination fees					6,661	4,522
Provision for long-term employee benefits					15,704	6,936
Employee benefit plan contributions and payments					(3,678)	(3,637)
Stock compensation expense					4,568	17,285
Net change in wholesale finance receivables related to sales					166,049	(167,594)
Provision for credit losses	$ 91,179		$ 26,383		170,598	60,874
Deferred income taxes					(19,461)	5,368
Other, net					(9,294)	(10,477)
Changes in current assets and liabilities:
Accounts receivable, net					(15,747)	(17,592)
Finance receivables – accrued interest and other					(2,985)	(4,963)
Inventories, net					163,700	88,146
Accounts payable and accrued liabilities					10,664	34,370
Derivative financial instruments					1,538	4,352
Other					15,158	(8,356)
Total adjustments					632,725	172,656
Net cash provided by operating activities					$ 610,203	$ 496,232