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

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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Fair value of all asset derivatives designated as cash flow hedging instruments.

+ References

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

The premium (cost) of a hedge, net of any cash received on settlement during the period.

+ References

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Amount, after tax, of cumulative translation adjustment attributable to gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109240241&loc=d3e32211-110900

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- Definition

Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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Derivative Instruments and Hedging Activities (Details) € in Thousands, $ in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 CAD ($)	Sep. 30, 2017 EUR (€)
Derivative instruments
Unrealized gains associated with interest rate swap agreements	$ 1,980		$ 4,183
Net Investment Hedging [Member] \| Designated as Hedging Instrument
Derivative instruments
Derivatives used in Net Investment Hedge, Net of Tax	9,949		9,949
Former Revolving Credit Facility [Member] \| Net Investment Hedging [Member] \| Designated as Hedging Instrument
Derivative instruments
Notional amount of derivatives \| €									€ 84,443
Senior Notes 4.375 Percent due 2021 \| Net Investment Hedging [Member] \| Designated as Hedging Instrument
Derivative instruments
Notional amount of derivatives \| €					€ 209,276
Foreign Exchange Forward - Option One [Member] \| Purchases
Derivative instruments
Notional amount of derivatives						$ 138,823
Foreign Exchange Forward - Option One [Member] \| Sales
Derivative instruments
Derivative, amount of hedged item								$ 176,000
Interest Rate Swap \| Designated as Hedging Instrument
Derivative instruments
Notional amount of derivatives	350,000		350,000
Foreign exchange contracts
Derivative instruments
Net cash receipts (payments)	(3,347)	$ 7,643	(4,558)	$ 8,536
Foreign exchange contracts \| Purchases
Derivative instruments
Notional amount of derivatives \| €					€ 30,000		€ 135,000
Foreign exchange contracts \| Sales
Derivative instruments
Derivative, amount of hedged item	35,436		35,436			160,757
Foreign Exchange Forward - Option Two [Member] \| Purchases
Derivative instruments
Notional amount of derivatives						$ 114,390
Foreign Exchange Forward - Option Two [Member] \| Sales
Derivative instruments
Derivative, amount of hedged item \| €							€ 96,150
Other Long-Term Liabilities \| Interest Rate Swap
Derivative instruments
Derivative liability	$ 4,183		$ 4,183