Supplemental Financial Statement Information, Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2016	Sep. 30, 2016
Inventories
Raw materials and supplies	$ 39.2	$ 46.1
Work in process	62.3	72.0
Finished products	130.1	171.1
Total inventories	231.6	289.2
Other Current Assets
Miscellaneous receivables	25.5	27.7
Prepaid expenses	63.1	70.0
Value added tax collectible from customers	32.7	22.9
Other	5.6	1.5
Total other current assets	126.9	122.1
Property, Plant and Equipment, Gross
Land	8.9	9.8
Buildings	124.1	138.2
Machinery and equipment	698.8	771.9
Construction in progress	16.1	16.6
Total gross property	847.9	936.5
Accumulated depreciation	(659.0)	(734.8)
Total property, plant and equipment, net	188.9	201.7
Other Current Liabilities
Accrued advertising, sales promotion and allowances	16.9	16.9
Accrued trade allowances	65.7	54.0
Accrued salaries, vacations and incentive compensation	28.4	59.3
2013 restructuring reserve	0.0	0.0
Spin restructuring reserve	2.2	4.0
Income taxes payable	29.3	15.0
Other	101.4	105.5
Total other current liabilities	243.9	254.7
Other Liabilities
Pensions and other retirement benefits	130.7	139.4
Deferred compensation	47.0	47.6
Other non-current liabilities	48.3	59.7
Total other liabilities	$ 226.0	$ 246.7