REVENUES (Reconciliation of Deferred Revenue Balances) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUES [Abstract]
Balance at beginning of year	$ 170.1	$ 178.0
Revenue recognized from deferred revenue	(2.0)	(1.7)
Balance at end of period	$ 168.1	$ 176.3