Net Income (loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of basic and diluted net income (loss) per share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three months ended March 31, 2018 and 2017 (in millions, except per share amounts):

	Three Months Ended March 31,
	2018		2017
Numerator:
Net income	$	407	$	1,035
Denominator:
Weighted average shares of common stock - basic	1,010		1,083
Dilutive effect of equity incentive awards	19		19
Weighted average shares of common stock - diluted	1,029		1,102
Net income per share:
Basic	$	0.40	$	0.96
Diluted	$	0.40	$	0.94
Common stock equivalents excluded from income per diluted share because their effect would have been anti-dilutive	1		1