Segment Data (Schedule of Segment Sales and Profitability) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Revenues	$ 422.8	$ 415.1
Operating income (loss)	(18.9)	9.3
General Corporate and Other Expenses	(24.1)	(20.9)
Amortization of Intangible Assets	(6.4)	(6.4)
Interest Expense and Other Nonoperating (Income) Expense, Net	(20.0)	(21.1)
Restructuring Charges	(24.4)	(4.1)
Acquisition and integration costs	0.0	(0.5)
Sun Care reformulation costs	(1.0)	(1.0)
Gain (Loss) Related to Litigation Settlement	(1.0)	0.0
Gain (Loss) on Investments	1.5	0.9
Other Cost and Expense, Operating	(0.1)	(2.8)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(36.9)	(12.7)
Cost of Product and Service Sold	261.8	242.6
Cost of products sold for segments	254.4	240.4
Other operating expenses	129.8	131.5
Restructuring Charges, including amounts included in Cost of Products Sold	(5.8)
Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Acquisition and integration costs		(0.5)
Other Cost and Expense, Operating	0.6	1.0
Restructuring Charges, Including Amounts in Selling, General and Administrative Expenses	(0.5)	0.0
Other Nonoperating Income (Expense)
Segment Reporting Information [Line Items]
Other Cost and Expense, Operating	0.5
Wet Shave
Segment Reporting Information [Line Items]
Revenues	291.3	294.5
Operating income (loss)	42.2	46.6
Cost of Product and Service Sold	171.6	166.2
Other operating expenses	77.5	81.7
Sun and Skin Care
Segment Reporting Information [Line Items]
Revenues	131.5	120.6
Operating income (loss)	(3.6)	(3.4)
Cost of Product and Service Sold	82.8	74.2
Other operating expenses	52.3	49.8
segment profit
Segment Reporting Information [Line Items]
Operating income (loss)	38.6	43.2
Total Segments
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	$ (6.4)	$ (6.4)