Business Combinations and Divestitures (Details) - USD ($) $ in Millions					12 Months Ended
		Nov. 29, 2021	Sep. 02, 2020	Dec. 17, 2019	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Acquisitions, net of cash acquired		$ 309.4			$ 309.4	$ 0.3	$ 233.6
Goodwill					1,322.2	1,162.8	1,159.7
Business combinations, pro forma revenue					2,181.7	2,155.3
Acquisition integration costs	[1]				9.9	8.4	39.8
Business combinations, pro forma net income					104.9	93.1
Pro forma amortization expense					1.3	8.9
Pro forma acquisition costs					9.9
Gain on sale of Infant and Pet Care business					0.0	0.0	4.1
Cremo
Business Acquisition [Line Items]
Goodwill			$ 128.0
Other intangible assets			$ 95.1
Weighted average useful life of intangible assets acquired			17 years
Business combinations, net assets acquired			$ 234.6
Business combinations, working capital and other net assets			11.5
Cash			$ 0.7
Billie
Business Acquisition [Line Items]
Current assets acquired		17.0
Goodwill		181.2
Other intangible assets		136.0
Property, plant and equipment		3.2
Liabilities assumed		(6.9)
Deferred tax liability acquired		(21.1)
Business combination, net assets assumed		$ 309.4
Weighted average useful life of intangible assets acquired		19 years
Business combinations, pro forma revenue					93.7
Business combination, earnings post acquisition					(1.1)
Selling, general and administrative expense
Business Acquisition [Line Items]
Acquisition integration costs					9.1	7.1	39.2
Selling, general and administrative expense | Cremo
Business Acquisition [Line Items]
Acquisition integration costs						7.1	7.0
Cost of products sold
Business Acquisition [Line Items]
Acquisition integration costs					0.8	1.3	0.6
Cost of products sold | Cremo
Business Acquisition [Line Items]
Acquisition integration costs					$ 1.3	$ 0.6
Infant and Pet Care | Disposal
Business Acquisition [Line Items]
Divestiture, sale price				$ 122.5
Infant inventory sold				18.8
Infant PPE sold				3.6
Infant goodwill and intangibles sold				$ 77.8
Gain on sale of Infant and Pet Care business							$ (4.1)

[1] Includes SG&A of $9.1, $7.1, and $39.2 for fiscal 2022, 2021, and 2020, respectively, related to integration expenses associated with acquisitions and Cost of products sold of $0.8, $1.3, and $0.6 related to the valuation of acquired inventory for fiscal 2022, 2021, and 2020 respectively.