CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) (Parentheticals) (USD $)	Dec. 31, 2012	Sep. 30, 2011
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	131,966,720	129,950,223
Common stock, shares outstanding (in shares)	105,498,098	106,177,615
Treasury stock, shares (in shares)	26,468,622	23,772,608