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Derivative Instruments and Hedging Activities - Euro Notes Designated as a Hedge of Net Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Foreign exchange losses (gains) associated with net investment hedge	$ 17,005	$ 6,003	$ 11,070
Cumulative net gains	46,635	11,866	(160,702)
Euro Notes | Designated Hedging Instruments | Net Investment Hedging
Derivative [Line Items]
Hedged notes	300,000	$ 284,986	$ 224,424
Cumulative net gains	$ 3,256

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- Definition

Amount of hedged item in hedging relationship. Excludes hedged asset or liability.

+ References

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- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683

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-Publisher FASB
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-Section 45
-Paragraph 19
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- Definition

Amount, before tax, of increase (decrease) in the cumulative translation adjustment from 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://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=121605123&loc=d3e30304-110892

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