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DERIVATIVES AND HEDGING TRANSACTIONS - Derivative Positions Summary (Details) € in Millions, $ in Millions	Sep. 30, 2021 USD ($)	Sep. 30, 2021 EUR (€)	Jul. 31, 2021 EUR (€)	Dec. 31, 2020 USD ($)
Asset Derivatives
Gross value of derivatives	$ 47.4			$ 15.5
Gross amounts offset in the Consolidated Balance Sheet	(18.6)			(12.3)
Net value of derivatives presented in the Consolidated Balance Sheet	28.8			3.2
Liability Derivatives
Gross value of derivatives	37.5			69.9
Gross amounts offset in the Consolidated Balance Sheet	(18.6)			(12.3)
Net value of derivatives presented in the Consolidated Balance Sheet	18.9			57.6
Cash collateral received	0.0
Cash collateral pledged	0.0
Foreign currency forward contracts.
Liability Derivatives
Notional values	3,819.0			3,702.0
Interest rate swap agreements
Liability Derivatives
Notional values	750.0
Cross Currency Interest Rate Contract
Liability Derivatives
Notional values	354.0
Cross Currency Interest Rate Contract \| Net Investment Hedges
Liability Derivatives
Notional values	354.0	€ 300	€ 300
Derivatives designated as hedging instruments \| Foreign currency forward contracts.
Asset Derivatives
Gross value of derivatives	17.1			8.1
Liability Derivatives
Gross value of derivatives	24.1			54.3
Derivatives designated as hedging instruments \| Interest rate swap agreements
Asset Derivatives
Gross value of derivatives	2.4
Liability Derivatives
Gross value of derivatives	3.9
Derivatives designated as hedging instruments \| Cross Currency Interest Rate Contract
Liability Derivatives
Gross value of derivatives	2.0
Derivatives not designated as hedging instruments \| Foreign currency forward contracts.
Asset Derivatives
Gross value of derivatives	27.9			7.4
Liability Derivatives
Gross value of derivatives	$ 7.5			$ 15.6