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Hedging Instruments (Schedule Of Fair Values And Balance Sheet Classifications Of Derivatives Designated As Hedging Instruments) (Details) - Derivatives and non-derivatives designated as hedging instruments - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	$ 2,454	$ 125
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,010)	(125)
Net amount	444	0
Total hedging instruments presented on the balance sheet	111,121	124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,010)	(125)
Net amount	109,111	124,214
Non-derivative foreign currency denominated debt designated as net investment hedge on the balance sheet | Long-term debt
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	105,634	109,125
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	5,487	15,214
Cash Flow Hedging | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	1,676	125
Cash Flow Hedging | Foreign currency exchange contracts | Other long-term assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	724	0
Cash Flow Hedging | Foreign currency exchange contracts | Accrued liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	5,349	12,373
Cash Flow Hedging | Foreign currency exchange contracts | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	138	0
Cash Flow Hedging | Cross currency swaps | Other long-term assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	54	0
Cash Flow Hedging | Cross currency swaps | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	$ 0	$ 2,841

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