EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Postretirement Plans
Net periodic pension/postretirement benefit expense
Service cost	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Interest cost	0.4	0.6	0.8	1.2
Amortization of unrecognized prior service credits	(1.2)	(1.0)	(2.4)	(2.0)
Total net periodic pension benefit (income) expense	(0.8)	(0.4)	(1.6)	(0.8)
UNITED STATES
Net periodic pension/postretirement benefit expense
Service cost	0.0	0.0	0.0	0.0
Interest cost	2.7	3.3	5.4	6.6
Expected return on plan assets	(2.4)	(2.4)	(4.8)	(4.9)
Total net periodic pension benefit (income) expense	0.3	0.9	0.6	1.7
Foreign Plan
Net periodic pension/postretirement benefit expense
Service cost	0.0	0.0	0.0	0.0
Interest cost	1.0	1.1	2.0	2.3
Expected return on plan assets	(1.5)	(1.6)	(3.0)	(3.2)
Total net periodic pension benefit (income) expense	$ (0.5)	$ (0.5)	$ (1.0)	$ (0.9)