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Subsequent Events (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Subsequent Event [Line Items] |  |
Derivative, Notional Amount | $ 607,747 | $ 504,084
Maturity March 2023 [Domain] | Foreign Exchange Forward Contract [Member] |  |
Subsequent Event [Line Items] |  |
Derivative, Notional Amount | 50,000 |
Maturity September 2024 [Domain] | Foreign Exchange Forward Contract [Member] |  |
Subsequent Event [Line Items] |  |
Derivative, Notional Amount | 50,000 |
Maturity April 2025 [Domain] | Foreign Exchange Forward Contract [Member] |  |
Subsequent Event [Line Items] |  |
Derivative, Notional Amount | 100,000 |
Maturity January 2028 [Domain] | Foreign Exchange Forward Contract [Member] |  |
Subsequent Event [Line Items] |  |
Derivative, Notional Amount | 100,000 |
All Maturities [Domain] | Foreign Exchange Forward Contract [Member] |  |
Subsequent Event [Line Items] |  |
Derivative, Notional Amount | $ 300,000 |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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