DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Derivative Financial Instruments Used to Manage Currency Exchange Rate Risk and Interest Rate Risk (Details) - Derivatives designated as hedging instruments - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
---|---|---|
Foreign currency forward exchange contracts | ||
Derivative Financial Instruments | ||
Derivative notional amount | $ 1,247.7 | $ 1,378.2 |
Cross currency swap contracts | ||
Derivative Financial Instruments | ||
Derivative notional amount | $ 300.0 | $ 300.0 |