PENSION, POST-RETIREMENT AND POST-EMPLOYMENT PLANS - Fair Value of Plan Assets by Asset Category (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure
Total	$ 173.4	$ 163.6
Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure
Total	90.5	92.6
Assets using net asset value (or NAV) as a practical expedient
Defined Benefit Plan Disclosure
Total	82.9	71.0
Derivatives | Level 2
Defined Benefit Plan Disclosure
Total	7.7	(0.8)
Exchange-traded funds holding domestic securities | Level 1
Defined Benefit Plan Disclosure
Total	9.6	10.7
Foreign bonds | Level 2
Defined Benefit Plan Disclosure
Total	2.0	1.9
Mutual funds holding fixed income securities | Level 1
Defined Benefit Plan Disclosure
Total	35.2	37.6
U.S. Treasury bonds | Level 2
Defined Benefit Plan Disclosure
Total	30.8	37.4
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure
Total	$ 5.2	$ 5.8