DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amount of Derivatives (Details) - Derivatives designated as hedging instruments - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Foreign currency forward exchange contracts | ||
| Derivative [Line Items] | ||
| Notional Amount | $ 1,061.6 | $ 761.2 |
| Interest rate swap agreements | ||
| Derivative [Line Items] | ||
| Notional Amount | 300.0 | 300.0 |
| Foreign currency option contracts | ||
| Derivative [Line Items] | ||
| Notional Amount | $ 0.0 | $ 9.2 |