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OTHER INCOME, NET - Components of Other (Expense) Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other Income and Expenses [Abstract] |  |  |
Foreign currency loss | $ (8.2) | $ (13.5) | $ (5.7)
Equity income | 9.7 | 8.1 | 1.9
Expected return on pension assets/amortization | 10.0 | 9.9 | 9.0
Other miscellaneous (expense) income | 0.1 | (1.7) | 1.2
Total other income, net | $ 11.6 | $ 2.8 | $ 6.4

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