OTHER COMPREHENSIVE INCOME (Accumulated Other Comprehensive Income, Net of Tax) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
OTHER COMPREHENSIVE INCOME [Abstract]
Cash flow hedges	$ (20.2)	$ (21.0)	$ (21.8)
Pension and postretirement plans	(131.2)	(133.7)	(128.7)
Total	$ (151.4)	$ (154.7)	$ (150.5)