Derivative Instruments And Hedging Activities - Derivative Instruments Designated As Hedging Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Asset derivative instruments designated as hedging instruments	$ 374	$ 451
Liability derivative instruments designated as hedging instruments	13,150	28,190
Other Assets, Net [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset derivative instruments designated as hedging instruments	374	451
Accrued Liabilities [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Liability derivative instruments designated as hedging instruments	82	751
Accrued Liabilities [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Liability derivative instruments designated as hedging instruments	6,945	14,056
Other Noncurrent Liabilities [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Liability derivative instruments designated as hedging instruments	$ 6,123	$ 13,383

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.

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

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