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Weighted Average Common Shares (Tables)
12 Months Ended
Sep. 30, 2012
Weighted Average Common Shares [Abstract]  
Schedule Of Basic And Diluted Earnings Per Common Share Reconciliation
(shares in millions)
2010

 
2011

 
2012

Basic shares outstanding
750.7

 
748.5

 
730.6

Dilutive shares
6.3

 
5.0

 
4.0

     Diluted shares outstanding
757.0

 
753.5

 
734.6