Consolidated Statements of Earnings and Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
OCI Pension and postretirement activity, net of tax	$ (0.6)	$ 2.7	$ 5.2
OCI gain (loss) on cash flow hedge, tax	(2.2)	(2.2)	2.5
Net earnings	98.6	114.7	99.5
Cost of products sold	1,298.0	1,310.8	1,291.2
Gross profit	955.7	940.8	880.5
Selling, general and administrative expense	430.1	409.6	389.1
Advertising and sales promotion expense	232.0	229.1	238.3
Research and development expense	58.4	58.5	55.5
Restructuring charges	35.9	16.6	15.3
Operating income	199.3	227.0	182.3
Interest expense associated with debt	76.5	78.5	71.4
Nonoperating Income (Expense)	(1.9)	(0.8)	13.2
Earnings before income taxes	120.9	147.7	124.1
Income tax provision	22.3	33.0	24.6
Net sales	$ 2,253.7	$ 2,251.6	$ 2,171.7
Basic net earnings per share	$ 1.98	$ 2.24	$ 1.87
Dilutive net earnings per share	$ 1.97	$ 2.21	$ 1.85
Foreign currency translation adjustments	$ 18.6	$ 44.3	$ (89.4)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(1.2)	(6.6)	(4.7)
Deferred gain (loss) on hedging activity, net of tax	(4.6)	(4.8)	5.5
Other Comprehensive Income (Loss), Net of Tax	15.2	46.1	(79.2)
Total comprehensive income (loss)	$ 113.8	$ 160.8	$ 20.3