Per Share Data

Basic net income per share attributable to the Company is calculated by dividing the after-tax income attributable to the Company by the weighted average number of outstanding shares of the Company’s common stock.

Diluted net income per share attributable to the Company is calculated by dividing the after-tax income attributable to the Company by the weighted average number of outstanding shares of the Company’s common stock, which have been adjusted for the dilutive effect of potentially issuable common shares.



Basic and Diluted EPS Calculation	Three Months Ended June 30,				Six Months Ended June 30,
(In millions, except per share amounts)	2017		2016		2017		2016
Basic weighted average common shares outstanding	514		521		514		521
Dilutive effect of potentially issuable common shares	6		4		7		5
Diluted weighted average common shares outstanding	520		525		521		526
Average stock price used to calculate common stock equivalents	$	75.41	$	64.17	$	73.36	$	60.01

There were 12.4 million and 13.9 million stock options outstanding as of June 30, 2017 and 2016, respectively.