Weighted Average Common Shares

12 Months Ended

Sep. 30, 2017

Weighted Average Number of Shares Outstanding, Diluted [Abstract]

Weighted Average Common Shares

WEIGHTED-AVERAGE COMMON SHARES

Basic earnings per common share consider only the weighted-average of common shares outstanding while diluted earnings per common share also consider the dilutive effects of stock options and incentive shares. Options to purchase approximately 4.5 million, 13.3 million and 5.9 million shares of common stock were excluded from the computation of diluted earnings per share in 2017, 2016 and 2015, respectively, as the effect would have been antidilutive. Earnings allocated to participating securities were inconsequential for all years presented. Reconciliations of weighted-average shares for basic and diluted earnings per common share follow (shares in millions):

	2015	2016	2017
Basic shares outstanding	673.3	644.0	642.1
Dilutive shares	3.2	2.8	1.3
Diluted shares outstanding	676.5	646.8	643.4