Consolidated Balance Sheets (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Common stock, par value (in Dollars per share)	$ 0.00015625	$ 0.00015625
Common stock, shares authorized (in Shares)	1,280	1,280
Common stock, shares issued (in Shares)	343.3	341.9
Common stock, shares outstanding (in Shares)	272.8	297.4
Treasury stock, shares (in Shares)	70.6	44.4