DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Location and Fair Value Amounts of Derivative Instruments Reported in Consolidated Condensed Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Foreign currency contracts
Assets
Fair value of derivative assets	$ 8.5	$ 17.4
Liabilities
Fair value of derivative liabilities	21.4	6.4
Cross currency swap contracts
Assets
Fair value of derivative assets	19.0	13.3
Derivatives designated as hedging instruments | Foreign currency contracts | Other current assets
Assets
Fair value of derivative assets	5.4	14.2
Derivatives designated as hedging instruments | Foreign currency contracts | Other assets
Assets
Fair value of derivative assets	3.1	3.2
Derivatives designated as hedging instruments | Foreign currency contracts | Accounts payable and accrued liabilities
Liabilities
Fair value of derivative liabilities	21.4	6.4
Derivatives designated as hedging instruments | Cross currency swap contracts | Other assets
Assets
Fair value of derivative assets	$ 19.0	$ 13.3