Business Segment Information - Schedule of Sales and Property by Geographic Region (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Sales and property by geographic region
Sales	$ 6,997.4	$ 6,329.8	$ 6,694.8
Property	581.9	574.4	571.9
North America
Sales and property by geographic region
Sales	4,132.8	3,760.2	4,014.3
Property	416.1	429.4	443.8
Europe, Middle East and Africa
Sales and property by geographic region
Sales	1,405.7	1,249.3	1,249.8
Property	91.1	81.9	60.5
Asia Pacific
Sales and property by geographic region
Sales	1,012.2	868.7	908.6
Property	54.8	42.8	41.9
Latin America
Sales and property by geographic region
Sales	446.7	451.6	522.1
Property	$ 19.9	$ 20.3	$ 25.7