RESTRUCTURING (Narrative) (Details) $ in Thousands	3 Months Ended		27 Months Ended
	Jun. 29, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Jun. 29, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and turnaround costs	$ 2,027	$ 3,349
Restructuring liability	$ 5,200		$ 5,200
Number of reportable segments | segment	3
Restructuring liability payable in next twelve months	$ 4,500		4,500
Restructuring costs	969	(292)
Turnaround costs	1,058	3,641
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Turnaround costs	1,100	3,600
2020 Program | Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost	60,000		60,000
Expected savings	80,000		80,000
2020 Program | Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost	70,000		70,000
Expected savings	90,000		90,000
2018 Program
Restructuring Cost and Reserve [Line Items]
Restructuring and turnaround costs	$ 2,000	$ 3,400	$ 52,300