Shares Used in Computing Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The computation of shares used in calculating basic and diluted net income per common share is as follows:

	Three Months Ended March 31,
(In millions)	2015		2014
Weighted-average common shares outstanding used for the calculation of net income per share - basic		238.8		254.4
Common stock equivalents		4.2		4.2
Weighted-average common shares outstanding used for the calculation of net income per share - diluted		243.0		258.6