Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Low end period remaining until maturity of derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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Amount of net unrealized gain (loss) related to the change in fair value of foreign currency exchange rate derivatives designated as cash flow hedging instruments. Recorded in accumulated other comprehensive income to the extent that the cash flow hedge is determined to be effective.

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Derivative Instruments (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Gain on treasury rate lock settlement	$ 6.5	$ (19.1)	$ 24.3
Lower range of durations of foreign currency forward contracts	1 month	1 month
Higher range of durations of foreign currency forward contracts	18 months	15 months
Gain/Loss on fair value of foreign currency forward contracts	$ (1.8)	$ 72.1	(23.6)
Expected settlement time for contracts, in months	18 months
Net gains (losses) of other income (expense) related to foreign currency forward contracts	$ 23.8	15.5	$ 5.2
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Aggregate notional amount	1,103.0	1,302.3
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Aggregate notional amount	721.0	$ 365.2
Interest rate lock
Derivatives, Fair Value [Line Items]
Gain on treasury rate lock settlement	8.5
Interest rate lock \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Aggregate notional amount	1,100.0
Interest rate swap \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Aggregate notional amount	$ 675.0
4.05% Senior Notes due 2025
Derivatives, Fair Value [Line Items]
Interest rate on senior notes	4.05%
5.20% Senior Notes due 2045
Derivatives, Fair Value [Line Items]
Interest rate on senior notes	5.20%
2.90% Senior Notes due 2020
Derivatives, Fair Value [Line Items]
Interest rate on senior notes	2.90%