Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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4.625% Senior notes due 2020

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The percentage by which average market price exceeds the sum of the issue price, accrued original issue discount and contingent additional principal on the zero-coupon subordinated notes at which contingent cash interest becomes payable.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Fair value of all derivative assets designated as fair value hedging instruments.

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Fair value of all derivative liabilities designated as fair value hedging instruments.

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Net fair value of all derivative instruments designated as fair value hedging instruments.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Instruments in Statement of Financial Position at Fair Value) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2017	Jan. 30, 2015	Aug. 23, 2012
Derivative [Line Items]
Fair Value Hedge Assets		$ 4.1
4.625% Senior notes due 2020	$ 597.0	604.1
Long-term debt, less current portion	$ 6,041.9	6,344.6
Debt Instrument, Basis Spread on Variable Rate	2.298%
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 2.8
Fair Value Hedge Liabilities	(3.1)	(4.1)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(2.8)
Fair Value Hedges, Net	$ 4.1
Derivative Instruments in Statement of Financial Position at Fair Value
Minimum percentage of market price to calculated value of zero-coupon subordinated debt at which the entity is subject to contingent cash interest	120.00%
Interest Rate Swap [Member]
Derivative [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	$ (7.2)	(10.5)	$ (7.0)
Fair Value Hedge Liabilities	(3.1)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0.0	0.0	0.0
Currency Swap [Member]
Derivative [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	21.6	0.0	0.0
Fair Value Hedge Liabilities	(2.8)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 0.0	0.0	$ 0.0
Senior notes due 2020 [Member]
Derivative [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	(4.625%)				(2.625%)
Senior notes due 2020 [Member]
Derivative [Line Items]
Long-term debt, less current portion	$ 600.0	$ 600.0
Senior notes due 2027 [Member]
Derivative [Line Items]
Long-term debt, less current portion	600.0			$ 600.0
Cross currency swap maturing 2022 [Member]
Derivative [Line Items]
Derivative, Notional Amount	300.0
Cross currency swap maturing 2025 [Member]
Derivative [Line Items]
Derivative, Notional Amount	300.0
Senior notes due 2022 [Member]
Derivative [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					(3.20%)	(3.75%)
Foreign Currency Contract, Asset, Fair Value Disclosure	1.0
Senior notes due 2025 [Member] [Member]
Derivative [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 1.8