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Derivatives and Hedging Activities - Effect of Derivative Instruments on Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | $ (6.8) | $ (3.9) | $ 55.0 | $ 6.3
Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | (3.5) | (1.1) | 12.4 | 1.3
Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | 2.9 | (1.1) | 3.7 | 1.2
Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Interest Rate and Currency Swap [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | (6.5) |  | 8.6 |
Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Treasury Lock |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | 0.1 |  | 0.1 | 0.1
Designated as Hedging Instruments [Member] | Fair Value Hedges [Member] | Interest Rate Swaps [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | 0.1 | 0.5 | 0.2 | 1.0
Not Designated as Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Earnings on Derivatives | $ (3.4) | $ (3.3) | $ 42.4 | $ 4.0

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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=56946850&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=56946850&loc=SL5624171-113959 + Details
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