Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Employee Benefits and Share-based Compensation [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes the Company’s stock option activity and related information as of and for the three months ended March 31, 2013 (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, 2012	34.1		$	24.13
Options granted	—		—
Options canceled	(0.4	)	31.35
Options exercised	(2.3	)	16.17
Options expired	(1.4	)	27.73
Balance as of March 31, 2013	30.0		$	24.46	3.1	$	35.8
As of March 31, 2013:
Vested and expected-to-vest options	29.2		$	24.50	3.0	$	32.5
Exercisable options	24.5		$	24.33	2.4	$	18.8

Schedule of Nonvested Share Activity [Table Text Block]

The following table summarizes the Company’s RSU, RSA, and PSA activity and related information as of and for the three months ended March 31, 2013 (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, 2012	26.8		$	27.76
RSUs granted	7.7		20.41
PSAs granted (*)	2.0		21.36
RSUs vested	(3.8	)	28.80
PSAs vested	(1.0	)	28.26
RSAs vested	(0.2	)	19.59
RSUs canceled	(0.7	)	24.20
PSAs canceled	(1.8	)	29.05
Balance as of March 31, 2013	29.0		$	25.28	1.7	$	538.4
As of March 31, 2013:
Vested and expected-to-vest RSUs, RSAs,    and PSAs	24.9		$	23.95	1.6	$	461.3

________________________________

^(*)  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 1.0 million shares. Depending on achievement of such performance goals, the range of shares that could be issued under these awards is 0 to 2.0 million shares.

Estimates of Weighted Average Fair Value Per Share Under Employee Purchase Plan And Stock Option Plan [Table Text Block]

The weighted-average assumptions used and the resulting estimates of fair value for stock options and ESPP were as follows:

	Three Months Ended March 31,
	2013	2012
Stock Options:
Volatility	—	46%
Risk-free interest rate	—	0.8%
Expected life (years)	—	4.2
Dividend yield	—	—
Weighted-average fair value per share	—	$8.51
ESPP:
Volatility	36%	51%
Risk-free interest rate	0.1%	0.1%
Expected life (years)	0.5	0.5
Dividend yield	—	—
Weighted-average fair value per share	$5.63	$6.38

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

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

	Three Months Ended March 31,
	2013		2012
Cost of revenues - Product	$	0.9	$	1.0
Cost of revenues - Service	4.6		5.3
Research and development	23.6		25.8
Sales and marketing	14.5		21.9
General and administrative	6.3		11.0
Total	$	49.9	$	65.0

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

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

	Three Months Ended March 31,
	2013		2012
Stock options	$	9.5	$	17.7
RSUs and PSAs	33.7		41.8
RSAs	3.3		—
ESPP	3.4		5.5
Total	$	49.9	$	65.0

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

The following table presents unrecognized compensation cost, adjusted for estimated forfeitures, recognized over a weighted-average period related to unvested stock options, RSUs, PSAs, and RSAs as of March 31, 2013 (in millions, except years):

	Unrecognized Compensation Cost		Weighted Average Period (In Years)
Stock options	$	59.0	2.3
RSUs and PSAs	342.7		2.2
RSAs	$	65.2	3.2