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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	Mar. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	$ 3,733	$ 125
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,223)	(125)
Net amount	1,510	0
Total hedging instruments presented on the balance sheet	111,224	124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,223)	(125)
Net amount	109,001	124,214
Foreign currency borrowings 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	104,327	109,125
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	6,897	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	1,595	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	628	0
Cash Flow Hedging | Foreign currency exchange contracts | Accrued liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	6,863	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	34	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	1,510	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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