Shareowners' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Shareowners' Equity (Textuals) [Abstract]
Common Stock, authorized	1,000,000,000
Common Stock, par value	$ 1.00	$ 1.00
Preferred Stock, authorized	25,000,000
Preferred Stock, par value	$ 0
Common Stock reserved for various incentive plans	10,100,000
Repurchase of common stock that did not settle, shares	40,757	60,000
Outstanding purchase of common stock recorded in accounts payable	$ 4.5	$ 6.4
Changes in outstanding common shares
Beginning Balance	138,800,000	139,800,000	141,900,000
Treasury stock purchases	(4,100,000)	(4,700,000)	(3,700,000)
Shares delivered under incentive plans	2,000,000	3,700,000	1,600,000
Ending Balance	136,700,000	138,800,000	139,800,000