LEASES - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 22,210	$ 25,021	$ 67,951	$ 75,452
Amortization of finance lease assets	109	64	327	111
Interest on finance leases	24	15	77	22
Short-term lease cost	16,684	13,826	47,423	39,936
Variable lease cost	797	864	2,845	1,900
Net lease cost	39,824	39,790	118,623	117,421
Net sales	$ 3,075,121	2,777,970	$ 8,974,072	8,345,730
Scenario, Adjustment
Lessee, Lease, Description [Line Items]
Operating lease cost		800		1,900
Variable lease cost		$ 800		$ 1,900