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PENSION, POST-RETIREMENT AND POST-EMPLOYMENT PLANS - Fair Value of Plan Assets by Asset Category (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Defined Benefit Plan Disclosure |  |
Total | $ 169.2 | $ 173.4
Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure |  |
Total | 95.0 | 90.5
Assets using net asset value (NAV) as a practical expedient |  |
Defined Benefit Plan Disclosure |  |
Total | 74.2 | 82.9
Derivatives | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Total | 4.6 | 7.7
Exchange-traded funds holding domestic securities | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Total | 0.0 | 9.6
Foreign bonds | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Total | 2.0 | 2.0
Mutual funds holding fixed income securities | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Total | 43.2 | 35.2
U.S. Treasury bonds | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Total | 38.3 | 30.8
Cash and cash equivalents | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Total | $ 6.9 | $ 5.2

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