PENSION AND POST-RETIREMENT BENEFITS - Fair Value of Asset Categories (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | $ 342.3 | $ 474 | |
Pension Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 342.3 | 474 | $ 463 |
Pension Plans | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 325 | 454.3 | |
Pension Plans | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 184 | 235 | |
Pension Plans | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 141 | 219.3 | |
Pension Plans | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Investments measured at Net Asset Value | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 17.3 | 19.7 | |
Pension Plans | Mutual Funds, Corporate Bonds | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 15.5 | 21.9 | |
Pension Plans | Mutual Funds, Corporate Bonds | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 15.5 | 21.9 | |
Pension Plans | Mutual Funds, Corporate Bonds | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Corporate Bonds | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Government Bonds | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 23.7 | 25.4 | |
Pension Plans | Mutual Funds, Government Bonds | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 23.7 | 25.4 | |
Pension Plans | Mutual Funds, Government Bonds | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Government Bonds | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, U.S. Large Cap Equiy | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0.5 | 0.7 | |
Pension Plans | Mutual Funds, U.S. Large Cap Equiy | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0.5 | 0.7 | |
Pension Plans | Mutual Funds, U.S. Large Cap Equiy | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, U.S. Large Cap Equiy | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, International Equities | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 14.1 | 15.8 | |
Pension Plans | Mutual Funds, International Equities | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 14.1 | 15.8 | |
Pension Plans | Mutual Funds, International Equities | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, International Equities | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Emerging Markets International Equity | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.4 | 2.8 | |
Pension Plans | Mutual Funds, Emerging Markets International Equity | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.4 | 2.8 | |
Pension Plans | Mutual Funds, Emerging Markets International Equity | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Emerging Markets International Equity | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, U.S., Small/Mid Cap Equity | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0.8 | 0.6 | |
Pension Plans | Mutual Funds, U.S., Small/Mid Cap Equity | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0.8 | 0.6 | |
Pension Plans | Mutual Funds, U.S., Small/Mid Cap Equity | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | | |
Pension Plans | Mutual Funds, U.S., Small/Mid Cap Equity | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | | |
Pension Plans | Mutual Funds, Cash and Cash Equivalents | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.7 | 0.3 | |
Pension Plans | Mutual Funds, Cash and Cash Equivalents | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.7 | 0.3 | |
Pension Plans | Mutual Funds, Cash and Cash Equivalents | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Cash and Cash Equivalents | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Other | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 4.7 | 1.2 | |
Pension Plans | Mutual Funds, Other | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 4.7 | 1.2 | |
Pension Plans | Mutual Funds, Other | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Mutual Funds, Other | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Fixed Income Securities, Government Bonds | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 57.5 | 85.9 | |
Pension Plans | Fixed Income Securities, Government Bonds | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Fixed Income Securities, Government Bonds | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 57.5 | 85.9 | |
Pension Plans | Fixed Income Securities, Government Bonds | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Corporate Bonds | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 19.1 | 27.5 | |
Pension Plans | Common and Collective Funds, Corporate Bonds | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 10.3 | 15.8 | |
Pension Plans | Common and Collective Funds, Corporate Bonds | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 8.8 | 11.7 | |
Pension Plans | Common and Collective Funds, Corporate Bonds | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Government Bonds | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 21.1 | 42.1 | |
Pension Plans | Common and Collective Funds, Government Bonds | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 4.7 | 5.1 | |
Pension Plans | Common and Collective Funds, Government Bonds | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 16.4 | 37 | |
Pension Plans | Common and Collective Funds, Government Bonds | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, U.S. Large Cap Equity | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 58.7 | 98.4 | |
Pension Plans | Common and Collective Funds, U.S. Large Cap Equity | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 58.7 | 91.9 | |
Pension Plans | Common and Collective Funds, U.S. Large Cap Equity | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 6.5 | |
Pension Plans | Common and Collective Funds, U.S. Large Cap Equity | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, U.S. Small/Mid Cap Equity | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 13.7 | 19.4 | |
Pension Plans | Common and Collective Funds, U.S. Small/Mid Cap Equity | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 13.7 | 19.4 | |
Pension Plans | Common and Collective Funds, U.S. Small/Mid Cap Equity | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, U.S. Small/Mid Cap Equity | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, International Equities | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 53.3 | 74.8 | |
Pension Plans | Common and Collective Funds, International Equities | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.7 | 3.3 | |
Pension Plans | Common and Collective Funds, International Equities | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 51.6 | 71.5 | |
Pension Plans | Common and Collective Funds, International Equities | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Emerging Markets International Equity | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 21.8 | 27.5 | |
Pension Plans | Common and Collective Funds, Emerging Markets International Equity | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 16.6 | 20.4 | |
Pension Plans | Common and Collective Funds, Emerging Markets International Equity | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 5.2 | 7.1 | |
Pension Plans | Common and Collective Funds, Emerging Markets International Equity | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Cash and Cash Equivalents | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.5 | 2.8 | |
Pension Plans | Common and Collective Funds, Cash and Cash Equivalents | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.5 | 2.8 | |
Pension Plans | Common and Collective Funds, Cash and Cash Equivalents | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Cash and Cash Equivalents | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Other | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.5 | (0.4) | |
Pension Plans | Common and Collective Funds, Other | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds, Other | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 1.5 | (0.4) | |
Pension Plans | Common and Collective Funds, Other | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Cash and Cash Equivalents | Total | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 14.4 | 7.6 | |
Pension Plans | Cash and Cash Equivalents | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 14.4 | 7.6 | |
Pension Plans | Cash and Cash Equivalents | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Cash and Cash Equivalents | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 0 | 0 | |
Pension Plans | Common and Collective Funds | Investments measured at Net Asset Value | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | 17.3 | 19.7 | |
Pension Plans | Hedge Funds | Investments measured at Net Asset Value | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Total Plan Assets at Fair Value | $ 0 | $ 0 | |