Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Sep. 30, 2012
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable	$ 97,000,000	$ 109,000,000
Preferred Stock, Par Value Per Share	$ 2.50	$ 2.50
Preferred Stock, Shares Authorized	5,400,000	5,400,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value Per Share	$ 0.50	$ 0.50
Common Stock, Shares Authorized	1,200,000,000	1,200,000,000
Common Stock, Shares Issued	953,354,012	953,354,012
Common Stock, Shares Outstanding	715,829,171	724,113,291
Treasury Stock, Shares	237,524,841	229,240,721