GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 28, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,005,245
Currency Translation	14,078
Goodwill, ending balance	1,019,323
U.S.
Goodwill [Roll Forward]
Goodwill, beginning balance	41,936
Currency Translation	0
Goodwill, ending balance	41,936
U.K. and Europe
Goodwill [Roll Forward]
Goodwill, beginning balance	835,505
Currency Translation	14,078
Goodwill, ending balance	849,583
Mexico
Goodwill [Roll Forward]
Goodwill, beginning balance	127,804
Currency Translation	0
Goodwill, ending balance	$ 127,804