Summarized Financial Information of Equity Affiliates (Table Of Summarized Financial Information Of Equity Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]
Current assets	$ 1,449.8	$ 1,296.4
Noncurrent assets	3,063.9	2,607.4
Current liabilities	699.2	654.0
Noncurrent liabilities	1,540.6	988.0
Net sales	2,308.5	2,604.3	$ 2,808.7
Sales less cost of sales	882.6	949.2	984.7
Operating income	487.8	524.0	542.9
Net income	$ 338.0	$ 351.0	$ 359.5