GOODWILL AND INTANGIBLE ASSETS - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Other intangible assets
Gross	$ 1,273,123	$ 1,112,348
Accumulated Amortization	(440,260)	(422,935)
Net	832,863	689,413
Backlog
Other intangible assets
Gross	28,558	28,865
Accumulated Amortization	(27,133)	(26,895)
Net	1,425	1,970
Technology
Other intangible assets
Gross	123,647	122,106
Accumulated Amortization	(62,307)	(57,737)
Net	61,340	64,369
Trademarks and trade names
Other intangible assets
Gross	15,504	8,430
Accumulated Amortization	(4,983)	(4,901)
Net	10,521	3,529
Other
Other intangible assets
Gross	19,874	18,279
Accumulated Amortization	(12,813)	(12,307)
Net	7,061	5,972
Other intangible assets
Other intangible assets
Gross	187,583	177,680
Accumulated Amortization	(107,236)	(101,840)
Net	80,347	75,840
Customer Relationships
Other intangible assets
Gross	1,085,540	934,668
Accumulated Amortization	(333,024)	(321,095)
Net	$ 752,516	$ 613,573