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Weighted Average Common Shares
3 Months Ended
Dec. 31, 2012
Weighted Average Common Shares [Abstract]  
Weighted Average Common Shares
Reconciliations of weighted average shares for basic and diluted earnings per common share follow (in millions). Earnings allocated to participating securities were inconsequential.
 
Three Months Ended December 31,
 
2011

 
2012

Basic shares outstanding
734.3

 
722.3

Dilutive shares
4.0

 
4.6

Diluted shares outstanding
738.3

 
726.9