Weighted Average Common Shares

12 Months Ended

Sep. 30, 2011

Weighted Average Common Shares [Abstract]

Weighted Average Common Shares

(2)   Weighted Average Common Shares

Basic earnings per common share consider only the weighted average of common shares outstanding while diluted earnings per common share consider the dilutive effects of stock options and incentive shares. Options to purchase approximately 4.6 million, 3.9 million and 7.6 million shares of common stock were excluded from the computation of diluted earnings per share in 2011, 2010 and 2009, 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)	2009		2010		2011
Basic shares outstanding		753.7		750.7		748.5
Dilutive shares		5.0		6.3		5.0
Diluted shares outstanding		758.7		757.0		753.5