Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2011

Employee Benefit Plans [Abstract]

Activity under all stock option incentive plans

	Options Outstanding
						Weighted		Weighted
						Average		Average
				Exercise		Exercise		Grant-Date
	Number of			Price Range		Price		Fair Value
	Shares			per Share		per Share		per Share
	(In millions, except per share data)
Balance at December 31, 2010		78		$	0.01 - 48.63	$	27.05	$	15.05
Options granted(1)		—			45.82		45.82		11.72
Options cancelled		(2	)		0.55 - 46.01		29.22		11.91
Options exercised		(8	)		0.01 - 45.05		23.55		14.78
Balance at September 30, 2011		68		$	0.01 - 48.63	$	27.42	$	15.23

(1) Less than one million stock options were granted in the nine months ended September 30, 2011.

Restricted stock unit activity

	Restricted Stock Units
	Outstanding
				Weighted
				Average
				Grant-Date
	Number of			Fair Value
	Shares			per Share
	(In millions, except per share data)
Balance at December 31, 2010		28		$	27.17
Restricted stock units granted		10			43.12
Restricted stock units cancelled		(2	)		31.81
Restricted stock units vested		(10	)		28.50
Balance at September 30, 2011		26		$	32.47

Per share weighted average fair value assumptions for stock options and employee stock purchase rights

	Employee
	Stock			Employee
	Purchase			Stock
	Rights			Options
Expected life (in years)		1.77			3.60
Implied Volatility		0.36			0.34
Risk-free interest rate		0.53	%		1.56	%
Expected dividend yield		0.99	%		0.80	%
Weighted average fair value	$	11.07		$	11.72

Details of total stock-based compensation expense by statement functional line

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
	(In millions)
Cost of product revenue	$	6	$	5	$	19	$	17
Research and development		85		80		284		253
Selling, general and administrative		30		28		99		89
	$	121	$	113	$	402	$	359

Unearned stock-based compensation estimated to be expensed related to unvested share-based payment awards

	2011		2012		2013		2014		2015		Total
	(In millions)
Unearned stock-based compensation	$	115	$	354	$	226	$	116	$	15	$	826