Employee Benefit Plans

9 Months Ended

Sep. 30, 2018

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

Employee Benefit Plans

Employee Benefit Plans

Restricted Stock Unit Activity

The following table presents restricted stock unit (“RSU”) activity (including performance-based RSUs that have been earned) under our equity incentive plans as of and for the nine months ended September 30, 2018 (in millions):  

	Units
Outstanding as of January 1, 2018	42
Awarded	18
Vested	(15	)
Forfeited	(7	)
Outstanding as of September 30, 2018	38

The weighted average grant date fair value for RSUs awarded during the nine months ended September 30, 2018 was $39.92 per share.

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, 2018 and 2017 was as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of net revenues	$	14	$	14	$	43	$	40
Sales and marketing	26		19		82		68
Product development	45		45		148		131
General and administrative	40		40		123		117
Total stock-based compensation expense	$	125	$	118	$	396	$	356
Capitalized in product development	$	3	$	4	$	10	$	10