Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Foreign currency forward contracts that were entered into to hedge forecasted revenue
Total foreign currency forward contracts	$ 532.3	$ 494.2
Derivative Instruments (Textual) [Abstract]
Lower Range of Durations of foreign currency forward contracts	1 month	1 month
Higher Range of Durations of foreign currency forward contracts	12 months	12 months
Gain/Loss on fair value of Foreign currency forward contracts	36.5	(11.0)
Expected Settlement time for contracts, in months	next 12 months
Gains and losses in earnings of Foreign currency forward contracts due to hedge ineffectiveness	(3.9)	0.4	(1.1)
Gains/(Losses) in product revenue for the settlement of certain effective cash flow hedge instruments	(36.9)	45.7	(49.7)
Aggregate notional amount of outstanding foreign currency contracts	263.7	160.8
Fair Value of outstanding foreign currency contracts	6.4	0.1
Net (gains) losses of other income (expense) related to foreign currency forward contracts	12.1	6.0
Foreign Exchange Contract [Member] \| Other Current Assets [Member] \| Designated as Hedging Instrument [Member]
Summary of Derivatives designated as Hedging Instruments
Derivative Asset, Fair Value	32.6	0
Foreign Exchange Contract [Member] \| Accrued Expenses and Other Liabilities [Member] \| Designated as Hedging Instrument [Member]
Summary of Derivatives designated as Hedging Instruments
Derivative Liability, Fair Value	0	11.0
Euro [Member]
Foreign currency forward contracts that were entered into to hedge forecasted revenue
Total foreign currency forward contracts	496.4	460.3
Canadian Dollar [Member]
Foreign currency forward contracts that were entered into to hedge forecasted revenue
Total foreign currency forward contracts	22.9	24.0
Swedish krona [Member]
Foreign currency forward contracts that were entered into to hedge forecasted revenue
Total foreign currency forward contracts	$ 13.0	$ 9.9

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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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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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The high end of the range of time remaining until maturity when a range is presented for a group of derivatives.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The low end of the range of time remaining until maturity when a range is presented for a group of derivatives.

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The portion of a hedge deemed to be ineffective that is reflected in current period results of operations.

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Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

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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.

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Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire.

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Aggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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