DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Of Derivative Instruments In Statement Of Financial Position (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative assets	$ 120.8	$ 297.9
Derivative liabilities	176.5	176.3
Derivatives designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative assets	116.9	218.4
Derivative liabilities	155.0	160.7
Derivatives designated as hedging instruments | Foreign exchange contracts | Current - Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	106.4	189.5
Derivative liabilities	139.5	141.9
Derivatives designated as hedging instruments | Foreign exchange contracts | Long-term - Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	10.5	28.9
Derivative liabilities	15.5	18.8
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative assets	3.9	79.5
Derivative liabilities	21.5	15.6
Derivatives not designated as hedging instruments | Foreign exchange contracts | Current - Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	3.9	79.2
Derivative liabilities	21.5	15.6
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-term - Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	0.0	0.3
Derivative liabilities	0.0
Cash flow hedging | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Foreign exchange contracts	$ (26.3)	$ 3.8	$ 12.2