Stock-Based Plans (Tables)

9 Months Ended

Sep. 30, 2015

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

Schedule of stock option activity

The following table summarizes stock option activity for the nine months ended September 30, 2015:  

	Options
	(In millions)
Outstanding as of January 1, 2015	10
Granted and assumed	2
Exercised	(5	)
Forfeited/expired/canceled	(1	)
Adjustment due to the Distribution	2
Outstanding as of September 30, 2015	8

Schedule of restricted stock unit activity

The following table summarizes restricted stock unit ("RSU") activity for the nine months ended September 30, 2015:  

	Units
	(In millions)
Outstanding as of January 1, 2015	36
Awarded and assumed	18
Vested	(12	)
Forfeited	(7	)
Adjustment due to the Distribution	10
Outstanding as of September 30, 2015	45

Schedule of stock-based compensation expense

The impact on our results of operations of recording stock-based compensation expense for the three and nine months ended September 30, 2015 and 2014 was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
	(In millions)
Cost of net revenues	$	10	$	8	$	28	$	23
Sales and marketing	28		24		75		71
Product development	29		30		83		90
General and administrative	26		24		115		67
Total stock-based compensation expense	$	93	$	86	$	301	$	251
Capitalized in product development	$	3	$	3	$	9	$	9

Stock option valuation assumptions

The following weighted average assumptions were used for the three and nine months ended September 30, 2015 and 2014:  

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Risk-free interest rate	1.47	%	1.27	%	1.39	%	1.19	%
Expected life (in years)	4.4		3.9		4.1		4.1
Dividend yield	—	%	—	%	—	%	—	%
Expected volatility	26	%	27	%	27	%	29	%