Summarized Financial Information of Equity Affiliates (Table Of Summarized Financial Information Of Equity Affiliates) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Equity Method Investments and Joint Ventures [Abstract]
Current assets	$ 1,232.9	$ 1,247.7
Noncurrent assets	2,225.3	2,189.8
Current liabilities	726.6	742.8
Noncurrent liabilities	523.9	613.6
Net sales	2,675.3	2,650.5	2,293.4
Sales less cost of sales	937.0	987.2	964.4
Operating income	529.7	537.0	454.5
Net income	$ 347.6	$ 351.3	$ 293.0