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Consolidated Statements of Total Equity (Parenthetical)
12 Months Ended12 Months Ended
Sep. 30, 2011
Sep. 30, 2011
Common Stock
Sep. 30, 2010
Common Stock
Sep. 30, 2009
Common Stock
Sep. 30, 2008
Common Stock
Sep. 30, 2011
Additional Paid-in Capital
Sep. 30, 2010
Additional Paid-in Capital
Sep. 30, 2009
Additional Paid-in Capital
Sep. 30, 2011
Treasury Stock
Beginning Balances318,823,234316,043,099318,823,234317,480,886316,660,275    
Issuances under employee benefit plans91,350    91,350107,952155,254 
Exercise of stock options303,535    303,5351,234,396665,357 
Issuance under Performance Unit Plan369,818    369,818   
Treasury stock purchases3,544,838       3,544,838
Ending Balances316,043,099316,043,099318,823,234317,480,886316,660,275