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Derivatives and Hedging Activities - Effect of Derivative Instruments on Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | $ (1.7) | $ 5.5
Derivatives designated as hedging instruments | Cash Flow Hedge |  |
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | (0.6) | 0.2
Derivatives designated as hedging instruments | Cash Flow Hedge | Foreign currency forward contracts |  |
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | (0.6) | 0.1
Derivatives designated as hedging instruments | Cash Flow Hedge | Treasury locks |  |
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | 0.0 | 0.1
Derivatives designated as hedging instruments | Fair Value Hedges | Interest rate swaps |  |
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | 0.1 | 0.1
Derivatives not designated as hedging instruments | Foreign currency forward contracts |  |
Derivative Instruments Gain Loss [Line Items] |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | $ (1.2) | $ 5.2

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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