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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, 2020 | Dec. 31, 2019
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Derivatives, Fair Value [Line Items] |  |
Total derivative instruments presented as hedge instruments on the balance sheet | $ 19,526 | $ 6,350
Gross amounts subject to master netting arrangements not offset on the balance sheet | (39) | (1,354)
Net amount | 19,487 | 4,996
Total hedging instruments presented on the balance sheet | 98,084 | 102,308
Gross amounts subject to master netting arrangements not offset on the balance sheet | (39) | (1,354)
Net amount | 98,045 | 100,954
Cross Currency Swaps | Other long-term assets |  |
Derivatives, Fair Value [Line Items] |  |
Total derivative instruments presented as hedge instruments on the balance sheet | 9,883 | 4,559
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 | 98,045 | 99,422
Cash Flow Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Total hedging instruments presented on the balance sheet | 39 | 2,886
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 | 8,346 | 1,791
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 | 1,297 | 0
Cash Flow Hedging | Foreign currency exchange contracts | Accrued liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Total hedging instruments presented on the balance sheet | $ 39 | $ 2,886

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