STOCKHOLDERS' EQUITY AND LONG-TERM INCENTIVE COMPENSATION - Components of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ (370.5)	$ (285.7)	$ (1,031.6)	$ (869.5)
Interest expense	2.6	3.5	7.3	10.9
Pre-tax	(10.0)	(18.1)	(49.1)	(66.5)
Amortization of unrecognized prior service credits - Pre-tax	24.6	(3.8)	19.8	(17.6)
Income taxes	(2.5)	4.2	4.5	11.9
Net income (loss)	(3.1)	(330.3)	(27.5)	(419.0)
Amount Reclassified from AOCI | (Gains) losses on qualifying cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pre-tax	(0.9)	0.3	(0.2)	(1.2)
Income taxes	0.2	(0.1)	0.0	0.3
Net income (loss)	(0.7)	0.2	(0.2)	(0.9)
Amount Reclassified from AOCI | Gains on pension and postretirement items:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrecognized prior service credits - Pre-tax	(1.1)	(1.2)	(3.3)	(3.6)
Income taxes	0.3	0.3	0.8	0.9
Net income (loss)	(0.8)	(0.9)	(2.5)	(2.7)
FX forward contracts | Amount Reclassified from AOCI | (Gains) losses on qualifying cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	(0.2)	0.0	(0.2)	0.0
Commodity contracts | Amount Reclassified from AOCI | (Gains) losses on qualifying cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from discontinued operations, net of tax	0.0	(0.3)	0.0	(3.8)
Swaps | Amount Reclassified from AOCI | (Gains) losses on qualifying cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (0.7)	$ 0.6	$ 0.0	$ 2.6