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