Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Schedule of restricted stock units

The following table presents RSU activity (including PBRSUs that have been earned) under our equity incentive plans as of and for the year ended December 31, 2020 (in millions except per share amounts):

	Units (1)	Weighted Average Grant-Date Fair Value (per share)
Outstanding as of January 1, 2020	28	$	36.82
Awarded and assumed	16	$	33.26
Vested	(12)	$	34.53
Forfeited	(7)	$	35.98
Outstanding as of December 31, 2020	25	$	35.85
Expected to vest as of December 31, 2020	20

Schedule of stock-based compensation expense

The following table presents stock-based compensation expense from continuing operations (in millions):  

	Year Ended December 31,
	2020		2019		2018
Cost of net revenues	$	43	$	46	$	48
Sales and marketing	89		76		91
Product development	159		169		169
General and administrative	140		140		157
Total stock-based compensation expense	$	431	$	431	$	465
Capitalized in product development	$	15	$	14	$	14