PENSION PLANS - Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 03, 2020	Dec. 28, 2018
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	$ 126.7	$ 112.2
Recognized prior service cost	3.8	4.0
Recognized net actuarial gain	(8.5)	(7.5)
Settlement	(0.4)	0.0
Prior service cost arising in current year	0.0	0.4
Net actuarial loss arising in current year	20.4	21.8
Foreign currency exchange rate changes	2.5	(4.2)
Ending balance	$ 144.5	$ 126.7

Other Comprehensive Income (Loss), Defined Benefit Plan, Other, before Tax

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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Amount, before tax, of increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan.

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Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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