Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

	Notional Amount As of December 31,
Foreign Currency: (In millions)	2016		2015
Euro	$	871.7	$	945.5
Swiss francs	—		80.8
Canadian dollar	—		76.7
Total foreign currency forward contracts	$	871.7	$	1,103.0

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

For the Years Ended December 31,
Net Gains/(Losses) Reclassified from AOCI into Net Income (Effective Portion)								Net Gains/(Losses) Recognized into Net Income (Ineffective Portion)
Location	2016			2015		2014		Location	2016		2015		2014
Revenue	$	5.3		$	173.2	$	6.8	Other income (expense)	$	2.9	$	4.9	$	(1.5	)
Operating expenses	$	(1.5	)	$	—	$	—	Other income (expense)	$	0.1	$	—	$	—

Summary of the fair value for our outstanding derivatives

(In millions)	Balance Sheet Location	Fair Value As of December 31, 2016
Hedging Instruments:
Asset derivatives	Other current assets	$	50.4
	Investments and other assets	$	6.6
Liability derivatives	Other long-term liabilities	$	4.6
Other Derivatives:
Asset derivatives	Other current assets	$	4.0
Liability derivatives	Accrued expenses and other	$	9.0

(In millions)	Balance Sheet Location	Fair Value As of December 31, 2015
Hedging Instruments:
Asset derivatives	Other current assets	$	16.6
	Investments and other assets	$	0.3
Liability derivatives	Accrued expenses and other	$	10.2
	Other long-term liabilities	$	2.5
Other Derivatives:
Asset derivatives	Other current assets	$	10.3
Liability derivatives	Accrued expenses and other	$	2.0