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DEBT - SCHEDULE OF SHORT-TERM DEBT (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Short-term Debt [Line Items]    
4.625% Senior notes due 2020 $ 413.7 $ 0.0
Convertible Subordinated Debt, Current 0.0 8.7
Short term debt issuance costs 0.7 0.5
Notes Payable, Current 2.2 1.8
Debt, Current $ 415.2 $ 10.0