Stock-Based Plans (Tables)

3 Months Ended

Mar. 31, 2016

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

Schedule of stock option activity

The following table summarizes stock option activity for the three months ended March 31, 2016:  

	Options
	(In millions)
Outstanding as of January 1, 2016	7
Granted and assumed	—
Exercised	—
Forfeited/expired/canceled	(1	)
Outstanding as of March 31, 2016	6

Schedule of restricted stock unit activity

The following table summarizes restricted stock unit (“RSU”) activity for the three months ended March 31, 2016:  

	Units
	(In millions)
Outstanding as of January 1, 2016	36
Awarded and assumed	1
Vested	(1	)
Forfeited	—
Outstanding as of March 31, 2016	36

Schedule of stock-based compensation expense

The impact on our results of operations of recording stock-based compensation expense for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31,
	2016		2015
	(In millions)
Cost of net revenues	$	7	$	8
Sales and marketing	21		24
Product development	31		29
General and administrative	29		32
Total stock-based compensation expense	$	88	$	93
Capitalized in product development	$	3	$	3

Stock option valuation assumptions

The following weighted average assumptions were used for the three months ended March 31, 2015:  

	Three Months Ended March 31,
	2015
Risk-free interest rate	1.46	%
Expected life (in years)	4.4
Dividend yield	—	%
Expected volatility	27	%