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Derivative Instruments (Details Textual) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2015
Derivatives, Fair Value [Line Items] |  |  |  |
Gain/Loss on fair value of foreign currency forward contracts | $ (0.5) | $ 27.3 | $ (113.0) |
Range of durations of foreign currency forward contracts | 15 months |  |  |
Net gains (losses) of other income (expense) related to foreign currency forward contracts | $ 5.9 | 2.0 | $ 4.5 |
Designated as Hedging Instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount | 1,892.4 | 2,239.1 |  |
Not Designated as Hedging Instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount | $ 793.8 | $ 735.1 |  |
Interest rate swap | Designated as Hedging Instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount |  |  |  | $ 675.0
2.90% Senior Notes due 2020 |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Interest rate on senior notes | 2.90% |  |  | 2.90%
Minimum |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Range of durations of foreign currency forward contracts | 1 month | 1 month |  |
Maximum |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Range of durations of foreign currency forward contracts | 15 months | 12 months |  |
Short-term derivative |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gain/Loss on fair value of foreign currency forward contracts | $ 2.4 |  |  |
Range of durations of foreign currency forward contracts | 12 months |  |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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