Stock-Based Plans (Tables)

3 Months Ended

Mar. 31, 2017

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

Schedule of restricted stock units

The following table summarizes the RSU and PBRSU activity under our equity incentive plans for the three months ended March 31, 2017:

	Units
	(In thousands)
Outstanding at January 1, 2017	29,185
Awarded	17,230
Vested	(934	)
Forfeited	(444	)
Outstanding at March 31, 2017	45,037
Expected to vest	39,145

Schedule of stock-based compensation expense

The impact on our results of operations of recording stock-based compensation expense under our equity incentive plans for the three months ended March 31, 2017 and 2016 was as follows:

	Three Months Ended March 31,
	2017		2016
	(In millions)
Customer support and operations	$	30	$	18
Sales and marketing	28		16
Product development	45		33
General and administrative	42		27
Depreciation and amortization	2		1
Total stock-based compensation expense	$	147	$	95
Capitalized as part of internal use software and website development costs	$	3	$	2