Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Consolidated Balance Sheets [Abstract]
Common stock, par value (in Dollars per share)	$ 0.00015625	$ 0.00015625
Common stock, shares authorized (in Shares)	1,280.0	1,280.0
Common stock, shares issued (in Shares)	271.4	343.5
Common stock, shares outstanding (in Shares)	256.2	266.1
Treasury stock, shares (in Shares)	15.2	77.4