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Discontinued Operations - Narrative (Details) - Discontinued Operations, Held-for-sale - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of discontinued operations (a)		$ 0.8	$ 0.0	$ 1,571.6	$ 0.0
Global Products
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of operations	$ 2,650.0
Employee benefit obligations		$ 17.5		$ 17.5