PENSION PLANS - Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	$ 119.2	$ 112.5
Recognized prior service cost	4.0	4.0
Recognized transition obligation	0.0	(0.9)
Recognized net actuarial gain	(9.6)	(14.8)
Prior service credit arising in current year	4.2	(2.2)
Net actuarial (gain) loss arising in current year	(5.6)	20.6
Ending balance	$ 112.2	$ 119.2