Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of share-based compensation, stock options, activity

The following table summarizes the Company’s stock option activity and related information as of and for the three months ended March 31, 2017 (in millions, except for per share amounts and years):



	Outstanding Options
	Number of Shares		Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Term (In Years)	Aggregate Intrinsic Value
Balance as of December 31, 2016	2.4		$	29.20
Exercised	(0.2	)	21.39
Expired/canceled	(0.6	)	30.63
Balance as of March 31, 2017	1.6		$	29.83	1.8	$	8.0

As of March 31, 2017:
Vested and expected-to-vest options	1.6		$	29.83	1.8	$	8.0
Exercisable options	1.5		$	30.82	1.5	$	6.6

Schedule of nonvested share activity

The Company’s RSU, restricted stock award ("RSA"), and PSA activity and related information as of and for the three months ended March 31, 2017 were as follows (in millions, except per share amounts and years):



	Outstanding RSUs, RSAs, and PSAs
	Number of Shares		Weighted Average Grant-Date Fair Value per Share		Weighted Average Remaining Contractual Term (In Years)	Aggregate Intrinsic Value
Balance as of December 31, 2016	20.9		$	24.05
RSUs granted ⁽¹⁾⁽³⁾	5.6		27.52
PSAs granted⁽²⁾⁽³⁾	0.6		27.32
RSUs vested	(3.8	)	24.14
RSAs vested	(0.3	)	22.69
PSAs vested	(0.6	)	24.41
RSUs canceled	(0.4	)	22.75
PSAs canceled	(0.3	)	24.33
Balance as of March 31, 2017	21.7		$	24.90	1.4	$	604.5

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⁽¹⁾	Includes service-based and market-based RSUs.

⁽²⁾

The number of shares subject to PSAs granted represents the aggregate maximum number of shares that may be issued pursuant to the award over its full term. The aggregate number of shares subject to these PSAs that would be issued if performance goals determined by the Compensation Committee are achieved at target is 0.4 million shares. Depending on achievement of such performance goals, the range of shares that could be issued under these awards is 0 to 0.6 million shares.

⁽³⁾

The grant date fair value of RSUs and PSAs were reduced by the present value of dividends expected to be paid on the underlying shares of common stock during the requisite and derived service period as these awards are not entitled to receive dividends until vested. During the three months ended March 31, 2017, the Company declared a quarterly cash dividend of $0.10 per share of common stock on January 26, 2017 which was paid on March 22, 2017 to stockholders of record on March 1, 2017, in the aggregate amount of $38.0 million.

Schedule of employee service share-based compensation, allocation of recognized period costs

Share-based compensation expense associated with stock options, RSUs, RSAs, PSAs, and ESPP was recorded in the following cost and expense categories in the Condensed Consolidated Statements of Operations (in millions):



	Three Months Ended March 31,
	2017		2016
Cost of revenues - Product	$	0.9	$	1.9
Cost of revenues - Service	4.3		3.5
Research and development	34.8		32.3
Sales and marketing	15.3		9.4
General and administrative	6.7		4.7
Total	$	62.0	$	51.8

Disclosure of share-based compensation arrangements by share-based payment award

The following table summarizes share-based compensation expense by award type (in millions):



	Three Months Ended March 31,
	2017		2016
Stock options	$	0.1	$	1.2
RSUs, RSAs, and PSAs	57.8		46.8
ESPP	4.1		3.8
Total	$	62.0	$	51.8

Schedule of unrecognized compensation cost, nonvested awards

The unrecognized compensation cost recognized over a weighted-average period related to unvested stock options, RSUs, RSAs, and PSAs as of March 31, 2017 were as follows (in millions, except years):



	Unrecognized Compensation Cost		Weighted Average Period (In Years)
Stock options	$	1.0	2.1
RSUs, RSAs, and PSAs	$	424.7	1.8