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(Financial Instruments and Hedging Activities - Additional Information) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Cumulative deferred hedging gain (loss), after tax, included in accumulated other comprehensive income | $ 27.1
Interest Rate Swap |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Derivative, notional amount | 724.7
Intercompany Debt [Member] |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Foreign currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates | 4,100.0
Debt [Member] |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Foreign currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates | 11,700.0
Interest Rate Risk [Member] | Fair Value Hedging [Member] |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Derivative instruments, gain (loss) recognized in income, net | (19.1)
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments | $ (25.3)
Royalty Arrangement [Member] |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |
Period covered by hedge | 18 months
Derivative, notional amount | $ 746.0

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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 Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 + Details
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- Definition Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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