Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

The notional value of foreign currency forward contracts that were entered into to hedge forecasted revenues and operating expenses is summarized as follows:

	Notional Amount As of December 31,
Foreign Currency: (In millions)	2017		2016
Euro	$	1,875.6	$	871.7
British pound sterling	150.9		—
Swiss francs	88.7		—
Canadian dollar	83.5		—
Total foreign currency forward contracts	$	2,198.7	$	871.7

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

The following table summarizes the effect of foreign currency forward contracts designated as hedging instruments in our consolidated statements of income:

For the Years Ended December 31,
Net Gains/(Losses) Reclassified from AOCI into Operating Income (Effective Portion) (in millions)									Net Gains/(Losses) Recognized into Net Income (Ineffective Portion) (in millions)
Location	2017			2016			2015		Location	2017			2016		2015
Revenues	$	(32.5	)	$	5.3		$	173.2	Other income (expense)	$	8.9		$	2.9	$	4.9
Operating expenses	$	0.6		$	(1.5	)	$	—	Other income (expense)	$	(0.2	)	$	0.1	$	—

Summary of the fair value for our outstanding derivatives

The following table summarizes the fair value and presentation in our consolidated balance sheets of our outstanding derivatives including those designated as hedging instruments:

(In millions)	Balance Sheet Location	Fair Value As of December 31, 2017
Hedging Instruments:
Asset derivatives	Other current assets	$	0.7
	Investments and other assets	$	0.2
Liability derivatives	Accrued expenses and other	$	84.7
	Other long-term liabilities	23.6
Other Derivatives:
Asset derivatives	Other current assets	$	1.8
Liability derivatives	Accrued expenses and other	$	3.0

(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