Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Foreign currency forward contracts that were entered into to hedge forecasted revenue

	Notional Amount
Foreign Currency: (in millions)	As of September 30, 2012		As of December 31, 2011
Euro	$	593.6	$	496.4
Canadian dollar	6.3		22.9
Swedish krona	3.2		13.0
Total foreign currency forward contracts	$	603.1	$	532.3

Summary of Derivatives designated as Hedging Instruments

(In millions)	Balance Sheet Location	Fair Value As of September 30, 2012
Foreign Currency Contracts:
Asset derivatives	Other current assets	$	6.4
Liability derivatives	Accrued expenses and other	$	(0.5	)
(In millions)	Balance Sheet Location	Fair Value As of December 31, 2011
Foreign Currency Contracts:
Asset derivatives	Other current assets	$	32.6
Liability derivatives	Accrued expenses and other	$	—

Summary of the effect of derivatives designated as hedging instruments on the consolidated statements of income

(In millions)	Amount Recognized in Accumulated Other Comprehensive Income (Loss) on Derivative Gain/(Loss) (Effective Portion)		Income Statement Location (Effective Portion)	Amount Reclassified from Accumulated Other Comprehensive Income (Loss) into Income Gain/(Loss) (Effective Portion)			Income Statement Location (Ineffective Portion)	Amount of Gain/(Loss) Recorded (Ineffective Portion)
For the Three Months Ended
September 30, 2012							Other income
Foreign currency contracts	$	5.9	Revenue	$	12.0		(expense)	$	0.8
September 30, 2011							Other income
Foreign currency contracts	$	13.5	Revenue	$	(10.8	)	(expense)	$	(2.8	)
For the Nine Months Ended
September 30, 2012							Other income
Foreign currency contracts	$	5.9	Revenue	$	31.0		(expense)	$	4.0
September 30, 2011							Other income
Foreign currency contracts	$	13.5	Revenue	$	(37.6	)	(expense)	$	(3.2	)