Shares Used in Computing Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of shares used in calculating basic and diluted net income per common share

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

	Three Months Ended June 30,		Six Months Ended June 30,
(In millions)	2018	2017	2018	2017
Weighted-average common shares outstanding used for the calculation of net income per share – basic	408.4	423.6	410.7	426.3
Common stock equivalents	8.0	8.9	8.3	9.2
Weighted-average common shares outstanding used for the calculation of net income per share – diluted	416.4	432.5	419.0	435.5