Supplemental Financial Statement Information, Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Jun. 30, 2017	Sep. 30, 2016
Inventories
Raw materials and supplies	$ 36.7	$ 46.1
Work in process	99.7	72.0
Finished products	164.8	171.1
Total inventories	301.2	289.2
Other Current Assets
Miscellaneous receivables	14.6	27.7
Prepaid expenses	62.1	70.0
Value added tax collectible from customers	21.6	22.9
Other	3.5	1.5
Total other current assets	101.8	122.1
Property, Plant and Equipment, Gross
Land	4.7	9.8
Buildings	121.8	138.2
Machinery and equipment	696.7	771.9
Construction in progress	17.6	16.6
Total gross property	840.8	936.5
Accumulated depreciation	(662.6)	(734.8)
Total property, plant and equipment, net	178.2	201.7
Other Current Liabilities
Accrued advertising, sales promotion and allowances	10.3	16.9
Accrued trade allowances	49.7	54.0
Accrued salaries, vacations and incentive compensation	40.1	59.3
Spin restructuring reserve	0.7	4.0
Income taxes payable	21.4	15.0
Other	88.7	105.5
Total other current liabilities	210.9	254.7
Other Liabilities
Pensions and other retirement benefits	119.0	139.4
Deferred compensation	40.8	47.6
Other non-current liabilities	48.8	59.7
Total other liabilities	$ 208.6	$ 246.7