EMPLOYEE BENEFIT PLANS - Net Periodic Post-Retirement Benefit Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Defined Benefit Plan Disclosure [Line Items]
Settlement / curtailment loss	$ 0.0
Defined benefit plan, net periodic benefit cost (credit) excluding service cost, statement of income or comprehensive income	Other, net	Other, net	Other, net
Other Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.3	$ 0.4	$ 0.6
Interest cost	1.5	0.9	1.5
Amortization of prior service cost (credit)	0.0	(0.7)	(1.3)
Actuarial loss amortization	(0.7)	0.0	0.3
Settlement / curtailment loss	(0.4)	0.0	0.0
Special termination benefit	6.9	0.0	16.1
Net periodic pension (benefit) expense	$ 7.6	$ 0.6	$ 17.2