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Derivatives - Narrative (Details) € in Millions, $ in Millions				1 Months Ended	12 Months Ended
	Oct. 24, 2018 USD ($)	Sep. 25, 2018 USD ($)	Jan. 20, 2017 USD ($)	Jan. 31, 2018	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 24, 2018 EUR (€)	Jan. 20, 2017 EUR (€)
Cross Currency Interest Rate Contract
Derivative [Line Items]
Derivative term	3 years		3 years
Notional amount	$ 75.0		$ 100.0					€ 65.4	€ 93.7
Cross Currency Interest Rate Contract | Long
Derivative [Line Items]
Fixed rate	6.875%		1.65%					6.875%	1.65%
Cross Currency Interest Rate Contract | Short
Derivative [Line Items]
Fixed rate	3.6725%		0.18%					3.6725%	0.18%
Cash Flow Hedging
Derivative [Line Items]
Loss recognized in accumulated other comprehensive income					$ (2.4)	$ (2.0)	$ (13.2)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Notional amount		$ 130.0
Gain recognized in accumulated other comprehensive income		$ 1.8
Net Investment Hedging | Cross Currency Interest Rate Contract
Derivative [Line Items]
Derivative term				25 months
Net Investment Hedging | Accounting Standards Update 2017-12 | Cross Currency Interest Rate Contract
Derivative [Line Items]
Loss recognized in accumulated other comprehensive income					5.3
Amount reclassified from accumulated other comprehensive loss into income as interest expense					$ 0.8
Amount recognized in income as derivative amounts excluded from effectiveness testing						$ 1.9
First Amendment to Second Amended and Restated Credit Agreement [Member] | Interest Rate Swap
Derivative [Line Items]
Derivative term			3 years
Notional amount			$ 315.0
Fixed rate			1.65%						1.65%

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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- Definition

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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