PENSION PLANS - Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	$ 112.2	$ 119.2
Recognized prior service cost	4.0	4.0
Recognized net actuarial gain	(7.5)	(9.6)
Prior service cost arising in current year	0.4	4.2
Net actuarial loss (gain) arising in current year	21.8	(5.6)
Other	(4.2)	0.0
Ending balance	$ 126.7	$ 112.2