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

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Face (par) amount of debt instrument at time of issuance.

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

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Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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The number of derivative instruments of a particular group held by the entity.

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Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Derivatives and Hedging Activities - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Sep. 30, 2017 USD ($)	Jun. 30, 2019 USD ($) derivative	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) derivative	Jun. 30, 2018 USD ($)	Dec. 31, 2018 derivative	Jun. 30, 2015 EUR (€)	Mar. 31, 2015 USD ($)
4.50% Senior Notes due September 2023
Derivative [Line Items]
Debt interest rate		4.50%		4.50%
Foreign currency forward contracts \| Designated as Hedging Instruments
Derivative [Line Items]
Maximum original maturity of foreign currency forward contracts				12 years
Unrealized (loss) gain on derivative instruments, net of taxes (less than in current QTD)		$ (0.1)	$ 1.3	$ (1.3)	$ 2.4
Net unrealized derivative gains included in AOCI to be reclassified into earnings in next twelve months				$ 0.1
Foreign currency forward contracts \| Derivatives not designated as hedging instruments
Derivative [Line Items]
Maximum original maturity of foreign currency forward contracts				12 years
Interest rate swaps
Derivative [Line Items]
Number of derivative instruments outstanding \| derivative		0		0		0
EUR - Denominated debt \| Net Investment Hedge \| 4.50% Senior Notes due September 2023
Derivative [Line Items]
Debt instrument face amount \| €							€ 400,000,000.0
Debt interest rate							4.50%
EUR - Denominated debt \| Designated as Hedging Instruments \| Net Investment Hedge
Derivative [Line Items]
Fair value of liability derivatives		$ 4.8		$ 4.8
Fair value of liability derivatives, after tax		$ 3.6		$ 3.6
Cross-currency swaps \| Net Investment Hedge
Derivative [Line Items]
Notional amount of outstanding derivative								$ 425.0
Cross-currency swaps \| Designated as Hedging Instruments \| Net Investment Hedge
Derivative [Line Items]
Fair value of liability derivatives	$ 61.9
Semi-annual interest settlement resulted in AOCI	17.7
Semi-annual interest settlement resulted in AOCI after tax	$ (44.2)