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Significant Accounting Policies (Hedging Instruments) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Unrealized gain recognized in other comprehensive income (loss), net of taxes | $ 15.0

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- Definition Unrealized Gain Loss On Foreign Exchange Forward Contracts, If Settled, Recognized In Other Comprehensive Income + References No definition available. + Details
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