Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

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, 2012 (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 at January 1, 2012	38.6		$	23.98
Options granted	3.0		22.93
Options canceled	(0.5	)	28.48
Options exercised	(0.7	)	12.67
Options expired	(0.2	)	26.18
Balance at March 31, 2012	40.2		$	24.02	3.7	$	106.4
As of March 31, 2012:
Vested or expected-to-vest options	38.3		$	23.80	3.6	$	104.5
Exercisable options	27.7		$	22.47	2.9	$	87.7

Schedule of Nonvested Share Activity [Table Text Block]

The following table summarizes the Company’s RSU and PSA activity and related information as of and for the three months ended March 31, 2012 (in millions, except per share amounts and years):

	Outstanding RSUs and PSAs
	Number of Shares		Weighted Average Grant-Date Fair Value per Share		Weighted Average Remaining Contractual Term (In Years)	Aggregate Intrinsic Value
Balance at January 1, 2012	19.6		$	30.27
RSUs granted	6.5		22.04
RSUs assumed	0.2		22.47
PSAs granted (1)	2.2		23.22
RSUs vested	(1.6	)	27.55
PSAs vested	(1.4	)	15.63
RSUs canceled	(0.4	)	30.20
PSAs canceled	(0.4	)	31.73
Balance at March 31, 2012	24.7		$	28.54	1.6	$	558.3
As of March 31, 2012:
Vested and expected-to-vest RSUs and PSAs	28.8		$	—	1.4	$	456.5

________________________________

(1) 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 0.9 million shares. Depending on achievement of such performance goals, the range of shares that could be issued under these awards is 0 to 2.2 million shares.

Shares available for grant [Table Text Block]

The following table presents the stock grant activity and the total number of shares available for grant under the 2006 Plan as of March 31, 2012 (in millions):

	Number of Shares
Balance at January 1, 2012	41.1
RSUs and PSAs granted (1)	(18.3	)
Options granted	(3.0	)
RSUs and PSAs canceled (1)	1.7
Options canceled (2)	0.5
Options expired (2)	0.2
Balance at March 31, 2012	22.2

________________________________

(1) RSUs and PSAs with a per share or unit purchase price lower than 100% of the fair market value of the Company's common stock on the day of the grant under the 2006 Plan are counted against shares authorized under the plan as two and one-tenth shares of common stock for each share subject to such award. The number of shares subject to PSAs granted represents the maximum number of shares that may be issued pursuant to the award over its full term.

(2) Includes canceled or expired options under the 1996 Plan and the 2000 Plan that expired unexercised after May 18, 2006, which become available for grant under the 2006 Plan according to its terms.

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

The weighted average assumptions used and the resulting estimates of fair value for employee stock options and the employee stock purchase plan during the three months ended March 31, 2012 and 2011 were:

	Three Months Ended March 31,
	2012	2011
Employee Stock Options:
Volatility factor	46%	41%
Risk-free interest rate	0.8%	1.7%
Expected life (years)	4.2	4.1
Dividend yield	—	—
Fair value per share	$8.51	$14.43
Employee Stock Purchase Plan:
Volatility factor	51%	33%
Risk-free interest rate	0.1%	1.8%
Expected life (years)	0.5	0.5
Dividend yield	—	—
Weighted-average fair value per share	$6.38	$9.07

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

The Company’s share-based compensation expense associated with stock options, employee stock purchases, RSUs, and PSAs is recorded in the following cost and expense categories for the three months ended March 31, 2012, and 2011 (in millions):

	Three Months Ended
	March 31,
	2012		2011
Cost of revenues - Product	$	1.1	$	1.0
Cost of revenues - Service	5.2		3.9
Research and development	25.8		22.3
Sales and marketing	21.9		13.2
General and administrative	11.0		8.6
Total	$	65.0	$	49.0

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,
	2012		2011
Options	$	17.7	$	19.7
RSUs and PSAs	41.6		23.4
Assumed RSUs	0.2		—
Employee stock purchase plan	5.5		4.4
Other acquisition-related compensation	—		1.5
Total	$	65.0	$	49.0