Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019
Inventories
Raw materials and supplies	$ 58.9	$ 55.1
Work in process	63.0	66.5
Finished products	245.1	235.6
Total inventories	367.0	357.2
Other Current Assets
Miscellaneous receivables	23.0	14.9
Inventory returns receivable	0.6	4.9
Prepaid expenses	68.1	65.0
Value added tax collectible from customers	19.7	23.0
Income taxes receivable	16.0	29.1
Other	17.2	3.1
Total other current assets	144.6	140.0
Property, Plant and Equipment
Land	18.9	18.7
Buildings	137.5	137.4
Machinery and equipment	991.8	992.3
Capitalized software costs	46.3	47.8
Construction in progress	40.4	40.9
Total gross property, plant and equipment	1,234.9	1,237.1
Accumulated depreciation and amortization	(850.1)	(841.1)
Total property, plant and equipment, net	384.8	396.0
Other Current Liabilities
Accrued advertising, sales promotion and allowances	41.7	51.9
Accrued trade allowances	23.4	26.2
Accrued salaries, vacations and incentive compensation	34.7	51.5
Income taxes payable	19.6	11.5
Returns reserve	27.0	60.4
Restructuring reserve	8.5	9.5
Value added tax payable	3.0	3.6
Deferred compensation	6.4	10.4
Short term lease obligation	12.0	0.0
Customer advance payments	1.5	1.7
Other	72.6	78.7
Total other current liabilities	250.4	305.4
Other Liabilities
Pensions and other retirement benefits	149.1	149.8
Deferred compensation	33.7	30.3
Long-term income taxes payable	43.6	0.0
Other non-current liabilities	84.1	78.8
Total other liabilities	$ 310.5	$ 258.9