Income Taxes (Income of U.S and Foreign Operations Before Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income from Continuing Operations Before Taxes
United States income	$ 924.6	$ 943.7	$ 723.3
Foreign income	1,288.7	1,215.3	1,350.8
Equity affiliates' income	294.1	264.8	215.4
Income From Continuing Operations Before Taxes	$ 2,507.4	$ 2,423.8	$ 2,289.5