DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts (Details) - Derivatives designated as cash flow hedges - Derivatives designated as cash flow hedges - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Foreign currency exchange contracts
Derivatives, Fair Value [Line Items]
Notional Amount	$ 144,000,000	$ 49,000,000
Foreign currency option contracts
Derivatives, Fair Value [Line Items]
Notional Amount	0	28,000,000
Interest rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount	550,000,000	900,000,000
Forward-starting interest rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount	$ 350,000,000	$ 475,000,000