Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024
Other Current Assets
Prepaid expenses	$ 79.8	$ 76.4
Value added tax receivables	34.1	40.0
Income taxes receivable	18.5	14.7
Other	15.2	9.1
Total other current assets	147.6	140.2
Other Current Liabilities
Accrued advertising and sales promotion	23.3	26.3
Accrued trade allowances	23.8	28.7
Accrued salaries, vacations and incentive compensation	32.1	78.6
Income taxes payable	9.2	13.6
Returns reserve	24.7	50.3
Accrued interest	9.5	24.7
Other	105.4	97.6
Total other current liabilities	228.0	319.8
Other Liabilities
Pensions and other retirement benefits	43.6	45.6
Other	125.6	129.4
Total other liabilities	$ 169.2	$ 175.0