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

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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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

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
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- Definition

The cash inflow from a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3581-108585

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Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 30
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Financial Instruments (Details 4) - USD ($)	1 Months Ended	12 Months Ended
Financial Instruments (Details 4) - USD ($)	Nov. 30, 2016	Dec. 31, 2021	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 31, 2017
Derivative [Line Items]
Pre-tax net gains and losses on certain loans designated as hedges of net investments in foreign subsidiaries				$ 17,400,000	$ (37,500,000)	$ 2,700,000
Proceeds from cross-currency interest rate swap termination				0	16,625,000	$ 75,057,000
Term Loan \| Fixed-Rate Term Loan
Derivative [Line Items]
Principle amount							$ 300,000,000
LIBOR \| Term Loan
Derivative [Line Items]
Basis spread on variable rate	3.00%
Forecast \| LIBOR \| Term Loan \| Fixed-Rate Term Loan
Derivative [Line Items]
Basis spread on variable rate		2.71%	1.65%
Foreign currency forward exchange contracts
Derivative [Line Items]
U.S. Dollar Equivalent				671,857,000	600,883,000
Recognized Gain (Loss)				(1,879,000)	1,394,000
Foreign currency forward exchange contracts \| Short [Member] \| British pounds sterling
Derivative [Line Items]
U.S. Dollar Equivalent				76,761,000	55,120,000
Recognized Gain (Loss)				(769,000)	(228,000)
Foreign currency forward exchange contracts \| Short [Member] \| Euros
Derivative [Line Items]
U.S. Dollar Equivalent				314,649,000	326,797,000
Recognized Gain (Loss)				(4,916,000)	628,000
Foreign currency forward exchange contracts \| Short [Member] \| No currency
Derivative [Line Items]
U.S. Dollar Equivalent				39,889,000	43,455,000
Recognized Gain (Loss)				(1,049,000)	1,477,000
Foreign currency forward exchange contracts \| Long [Member] \| British pounds sterling
Derivative [Line Items]
U.S. Dollar Equivalent				5,960,000	827,000
Recognized Gain (Loss)				72,000	(14,000)
Foreign currency forward exchange contracts \| Long [Member] \| Euros
Derivative [Line Items]
U.S. Dollar Equivalent				223,111,000	171,578,000
Recognized Gain (Loss)				4,564,000	(468,000)
Foreign currency forward exchange contracts \| Long [Member] \| No currency
Derivative [Line Items]
U.S. Dollar Equivalent				11,487,000	3,106,000
Recognized Gain (Loss)				$ 219,000	$ (1,000)