Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

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

	Three Months Ended March 31,
	2015		2014
Numerator:
Net income	$	80.2	$	110.6
Denominator:
Weighted-average shares used to compute basic net income per share	407.1		486.2
Dilutive effect of employee stock awards	7.1		10.3
Weighted-average shares used to compute diluted net income per share	414.2		496.5
Net income per share attributable to Juniper Networks common stockholders:
Basic	$	0.20	$	0.23
Diluted	$	0.19	$	0.22
Anti-dilutive:
Potential anti-dilutive shares	6.4		25.4