FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Assets and Liabilities Associated with Interest Rate Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Other current assets	$ 0.0	$ 1.9
Other long-term assets	13.8	0.3
Total assets	13.8	2.3
Liabilities from interest rate risk management activities
Accrued expenses and other current liabilities	0.1	4.2
Long-term interest rate swap liabilities	11.1	40.6
Total liabilities	$ 11.2	$ 44.8

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