Stock-Based and Employee Savings Plans (Tables)

12 Months Ended

Dec. 31, 2017

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

Schedule of stock option activity

The following table summarizes stock option activity of our employees under our equity incentive plans for the year ended December 31, 2017:

	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
	(In thousands, except per share amounts and years)
Outstanding at January 1, 2017	4,288		$	28.65
Granted and assumed	308		$	13.94
Exercised	(1,986	)	$	25.66
Forfeited/expired/canceled	(170	)	$	32.90
Outstanding at December 31, 2017	2,440		$	28.94	4.33	$	111,371
Expected to vest	731		$	28.01	5.48	$	34,052
Options exercisable	1,653		$	29.48	3.76	$	74,561

Schedule of restricted stock units

The following table summarizes the RSUs and PBRSUs granted under our equity incentive plans as of December 31, 2017 and changes during the year ended December 31, 2017:

	Units		Weighted Average         Grant-Date Fair Value (per share)
	(In thousands, except per share amounts)
Outstanding at January 1, 2017	29,185		$	37.06
Awarded	19,744		$	44.24
Vested	(10,912	)	$	36.70
Forfeited	(4,142	)	$	38.98
Outstanding at December 31, 2017	33,875		$	41.14
Expected to vest	30,506

Schedule of stock-based compensation expense

The impact on our results of operations of recording stock-based compensation expense under the eBay and PayPal equity incentive plans for the years ended December 31, 2017, 2016 and 2015 was as follows:

	Year Ended December 31,
	2017		2016		2015
	(In millions)
Customer support and operations	$	142	$	85	$	62
Sales and marketing	140		84		52
Product development	240		139		132
General and administrative	210		130		94
Depreciation and amortization	12		6		7
Total stock-based compensation expense	$	744	$	444	$	347
Capitalized as part of internal use software and website development costs	$	24	$	13	$	7
Income tax benefit recognized for stock-based compensation arrangements	$	218	$	127	$	98

Schedule of stock option valuation assumptions

The following weighted average assumptions were used for the years ended December 31, 2017, 2016 and 2015:

	Year Ended December 31,
	2017		2016		2015
Risk-free interest rate	1.6	%	1.5	%	1.4	%
Expected life (in years)	3.3		4.6		4.3
Dividend yield	—		—		—
Expected volatility	26	%	25	%	26	%