Net Income Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Income Per Share

Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share: 

	Three Months Ended March 31,
(In millions, except per share data)	2014		2015
Basic net income per share:
Net income	$	25.4	$	28.4
Weighted average shares outstanding:
Common stock	141.0		141.4
Number of shares used in per share computations	141.0		141.4
Net income per share	$	0.18	$	0.20
Diluted net income per share:
Net income	$	25.4	$	28.4
Weighted average shares outstanding:
Common stock	141.0		141.4
Stock options, awards and employee share purchase plans	2.8		2.8
Number of shares used in per share computations	143.8		144.2
Net income per share	$	0.18	$	0.20

We excluded 6.9 million and 2.5 million potential common shares from the computation of dilutive net income per share for the three months ended March 31, 2014 and 2015, respectively, because the effect would have been anti-dilutive.