Property, Plant and Equipment schedule of property, plant and equipment (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	$ 1,187.3	$ 937.7
Construction in Progress, Gross	66.1	57.7
Less: Accumulated depreciation	486.6	394.3
Property, plant and equipment, net (Note 11)	700.7	543.4
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	201.1	196.9
Machinery, equipment and other
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	637.7	553.1
Other Capitalized Property Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	$ 282.4	$ 130.0