Income Taxes (Income of U.S and Foreign Operations Before Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income from Continuing Operations Before Taxes
United States income	$ 1,050.5	$ 947.9	$ 924.6
Foreign income	1,227.6	1,325.3	1,288.7
Equity affiliates' income	604.3	481.5	294.1
Income From Continuing Operations Before Taxes	$ 2,882.4	$ 2,754.7	$ 2,507.4