Derivative Financial Instruments (Schedule Of Derivative Instruments Included In Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Interest Rate Swap [Member] \| Other Assets [Member]
Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract]
Derivative Instruments in Hedges, Assets, at Fair Value	$ 0	$ 1,471
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	1,444	0
Interest Rate Swap [Member] \| Accrued Liabilities [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	0	762
Foreign Exchange Forward [Member] \| Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	2,858	4,412
Foreign Exchange Forward [Member] \| Accrued Liabilities [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	1,223	952
Foreign Exchange Forward [Member] \| Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	943	1,684
Foreign Exchange Forward [Member] \| Other Liabilities [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	3,252	2,195
Other Contract [Member] \| Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	$ 37,065	$ 12,308

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Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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- Definition

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

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Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

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Fair value as of the balance sheet date of all derivative liabilities not designated as hedging instruments.

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