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Derivative instruments - Cash Flow Hedges Schedule Footnote (Details) - Cash Flow Hedging - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Total			$ 31,969
Cross-currency interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency exchange results	$ 40,353	$ 6,346	28,588
Net interest expense	(2,977)	(8,402)	(9,700)
Total	$ 37,376	$ (2,056)	$ 18,888

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- Definition

The effective portion of loss (gain) reclassified from accumulated other comprehensive income to the statement of income within net interest expense.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
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- Definition

Amount before tax, after 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.

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