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Derivatives and Hedging Activities - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | $ 72.2 | $ 63.4
Total Derivative Liabilities | (56.8) | (68.0)
Net Derivatives | 15.4 | (4.6)
Not Designated as Hedging Instruments [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 25.0 | 41.3
Total Derivative Liabilities | (43.5) | (67.6)
Net Derivatives | (18.5) | (26.3)
Foreign Currency Forward Contracts [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 28.2 | 45.6
Total Derivative Liabilities | (44.8) | (68.0)
Foreign Currency Forward Contracts [Member] | Not Designated as Hedging Instruments [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 25.0 | 41.3
Total Derivative Liabilities | (43.5) | (67.6)
Interest Rate and Currency Swap [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 44.0 | 17.8
Cross-Currency Swaps [Member] |  |
Derivatives Fair Value [Line Items] |  |
Total Derivative Liabilities | (12.0) |
Cash Flow Hedge [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 47.2 | 22.1
Total Derivative Liabilities | (1.3) | (0.4)
Net Derivatives | 45.9 | 21.7
Cash Flow Hedge [Member] | Foreign Currency Forward Contracts [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 3.2 | 4.3
Total Derivative Liabilities | (1.3) | (0.4)
Cash Flow Hedge [Member] | Interest Rate and Currency Swap [Member] |  |
Derivatives Fair Value [Line Items] |  |
Foreign currency forward contracts | 44.0 | $ 17.8
Net Investment Hedge [Member] |  |
Derivatives Fair Value [Line Items] |  |
Total Derivative Liabilities | (12.0) |
Net Derivatives | (12.0) |
Net Investment Hedge [Member] | Cross-Currency Swaps [Member] |  |
Derivatives Fair Value [Line Items] |  |
Total Derivative Liabilities | $ (12.0) |

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 + Details
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