Net Income Per Share

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Net Income Per Share

Net Income per Share

The Company computed basic and diluted net (loss) income per share attributable to Juniper Networks common stockholders as follows (in millions, except per share amounts):

	Years Ended December 31,
	2015		2014			2013
Numerator:
Net income (loss)	$	633.7	$	(334.3	)	$	439.8
Denominator:
Weighted-average shares used to compute basic net income (loss)    per share	390.6		457.4			501.8
Dilutive effect of employee stock awards	8.8		—			8.5
Weighted-average shares used to compute diluted net income (loss)    per share	399.4		457.4			510.3
Net income (loss) per share attributable to Juniper Networks common    stockholders:
Basic	$	1.62	$	(0.73	)	$	0.88
Diluted	$	1.59	$	(0.73	)	$	0.86
Anti-dilutive:
Potential anti-dilutive shares	3.4		20.8			13.2

Basic net income per share is computed using net income (loss) available to common stockholders and the weighted-average number of common shares outstanding for the period. Diluted net income per share is computed using net income (loss) available to common stockholders and the weighted-average number of common shares outstanding plus potentially dilutive common shares outstanding during the period. Dilutive potential common shares consist of common shares issuable upon exercise of stock options, issuances of ESPP, and vesting of RSUs, RSAs, and PSAs. The Company includes the common shares underlying PSAs in the calculation of diluted net income per share when they become contingently issuable and excludes such shares when they are not contingently issuable. Potentially dilutive common shares were excluded from the computation of diluted net loss per share because their effect would be anti-dilutive.