Note 11 - Stock-Based Plans

6 Months Ended

Jun. 30, 2013

Stock-Based Plans Disclosure [Abstract]

Stock-Based Plans

Stock-Based Plans

Stock Option Activity

The following table summarizes stock option activity for the six months ended June 30, 2013:  

	Options
	(In millions)
Outstanding as of January 1, 2013	24
Granted and assumed	1
Exercised	(6	)
Forfeited/expired/canceled	(1	)
Outstanding as of June 30, 2013	18

The weighted average exercise price of stock options granted during the period was $55.68 per share and the related weighted average grant date fair value was $15.49 per share.

Restricted Stock Unit Activity

The following table summarizes restricted stock unit ("RSU") activity for the six months ended June 30, 2013:  

	Units
	(In millions)
Outstanding as of January 1, 2013	39
Awarded and assumed	13
Vested	(13	)
Forfeited	(2	)
Outstanding as of June 30, 2013	37

The weighted average grant date fair value for RSUs awarded during the period was $55.56 per share.

Stock-Based Compensation Expense

The impact on our results of operations of recording stock-based compensation expense for the three and six months ended June 30, 2013 and 2012 was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(In millions)
Cost of net revenues	$	23	$	14	$	36	$	28
Sales and marketing	41		34		74		64
Product development	46		37		78		67
General and administrative	51		42		84		79
Total stock-based compensation expense	$	161	$	127	$	272	$	238
Capitalized in product development	$	4	$	3	$	7	$	10

Valuation Assumptions

We calculated the fair value of each stock option award on the date of grant using the Black-Scholes option pricing model. The following weighted average assumptions were used for the three and six months ended June 30, 2013 and 2012:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Risk-free interest rate	0.62	%	0.73	%	0.62	%	0.72	%
Expected life (in years)	4.1		4.0		4.1		4.0
Dividend yield	—	%	—	%	—	%	—	%
Expected volatility	34	%	38	%	34	%	38	%

Our computation of expected volatility is based on a combination of historical and market-based implied volatility from traded options on our common stock. Our computation of expected life is based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The interest rate for periods within the contractual life of the award is based on the U.S. Treasury yield curve in effect at the time of grant.