Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY [Abstract]      
Purchase of treasury stock, shares (in shares) 228,789 619,981 1,015,879
Issuance of treasury stock, shares (in shares) 5,936,169 295,079 196,076
Cancellation of treasury stock, shares (in shares) 77,597 47,084 7,931
Dividends, per share (in dollars per share) $ 0.46 $ 0.41 $ 0.37