Segment Data (Schedule of Segment Sales and Profitability) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net sales	$ 647,800,000	$ 650,000,000.0	$ 1,736,100,000	$ 1,717,500,000
Segment profit	82,700,000	86,200,000	178,900,000	174,900,000
Acquisition and integration costs	(700,000)	(1,000,000.0)	(2,100,000)	(5,100,000)
Sun Care reformulation costs	(1,300,000)	(600,000)	(2,200,000)	(1,700,000)
Wet Ones manufacturing plant fire	(2,700,000)	0	(8,000,000.0)	0
Proceeds from legal settlement, net of other costs		6,800,000		6,300,000
Loss Contingency, Damages Sought, Value	(2,500,000)		(3,900,000)
Gain (Loss) on Investments	(3,100,000)		(3,100,000)
Other project costs	(1,700,000)	0	(2,900,000)	0
Amortization of Intangible Assets	(7,700,000)	(7,800,000)	(23,300,000)	(23,200,000)
Interest Expense and Other Nonoperating (Income) Expense, Net	(17,200,000)	(15,400,000)	(60,400,000)	(53,300,000)
Earnings before income taxes	62,500,000	70,800,000	115,500,000	114,400,000
Pension settlement expense		0		7,200,000
Restructuring Charges, including amounts included in Cost of Products Sold		0		200,000
Restructuring Charges, Including Amounts in Selling, General and Administrative Expenses				8,900,000
Restructuring Charges	(3,200,000)	(3,100,000)	(13,200,000)	(9,100,000)
us-gaap_LossContingencyDamagesSoughtValue		(7,100,000)		7,100,000
Wet Shave
Segment Reporting Information [Line Items]
Net sales	316,300,000	324,100,000	911,100,000	908,000,000.0
Segment profit	47,600,000	32,300,000	141,700,000	103,400,000
Sun and Skin Care
Segment Reporting Information [Line Items]
Net sales	256,900,000	244,900,000	608,100,000	567,500,000
Segment profit	64,200,000	61,400,000	117,300,000	114,700,000
Feminine Care
Segment Reporting Information [Line Items]
Net sales	74,600,000	81,000,000.0	216,900,000	242,000,000.0
Segment profit	6,600,000	14,000,000.0	22,600,000	38,100,000
Total Segments
Segment Reporting Information [Line Items]
Segment profit	118,400,000	107,700,000	281,600,000	256,200,000
Corporate
Segment Reporting Information [Line Items]
General Corporate and Other Expenses	(15,800,000)	(15,800,000)	(47,000,000.0)	(48,700,000)
Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Acquisition and integration costs	(700,000)	(1,000,000.0)	(2,100,000)	(5,100,000)
Other project costs	(1,700,000)		(2,900,000)
Pension settlement expense				7.2
Restructuring Charges, Including Amounts in Selling, General and Administrative Expenses	$ 100,000	100,000	$ 100,000	200,000
Cost of products sold
Segment Reporting Information [Line Items]
Restructuring Charges, including amounts included in Cost of Products Sold		$ 0		$ 200,000