REVENUES (Reconciliation of Deferred Revenue Balances) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
REVENUES [Abstract]
Balance at beginning of period	$ 168.1	$ 176.3	$ 170.1	$ 178.0
Revenue recognized from deferred revenue	(2.2)	(2.2)	(4.2)	(3.9)
Balance at end of period	$ 165.9	$ 174.1	$ 165.9	$ 174.1