Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Forward Foreign Exchange Contracts [Member]
Forward foreign exchange contracts, terms	The terms of our forward contracts are generally less than 90 days.
Foreign Exchange Risk of Intercompany Borrowing and Investment Activities [Member] \| Fair Value Hedge [Member] \| Designated as Hedging Instrument [Member] \| Forward Foreign Exchange Contracts [Member]
Forward foreign exchange contracts, notional amount	$ 22.1	$ 113.1
Foreign Exchange Risk of Revenue and Expenses Denominated in Different Currencies [Member] \| Fair Value Hedge [Member] \| Designated as Hedging Instrument [Member] \| Forward Foreign Exchange Contracts [Member]
Forward foreign exchange contracts, notional amount	85.9	44.0
Interest Rate Swaps [Member]
Interest rate swaps, hedged amount	1,750.0	2,250.0
Interest Rate Swaps on 2022 Notes [Member]
Forward foreign exchange contracts, notional amount	$ 1,000.0	$ 1,250.0
LIBOR [Member] \| Interest Rate Swaps on 2022 Notes [Member]
Interest rate swaps, spread	1.05%

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

+ Details

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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

+ References

No definition available.

+ Details

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Description of the relevant terms of the derivative. Includes the type of instrument, risk being hedged, notional amount, counterparty, inception date, maturity date, relevant interest rates, strike price, cap price, and floor price.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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