Property, Plant and Equipment schedule of property, plant and equipment (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	$ 937.7	$ 836.4
Less: Accumulated depreciation	394.3	326.9
Property, plant and equipment, net (Note 11)	543.4	509.5
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	196.9	192.2
Machinery, equipment and other
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	553.1	495.1
Other Capitalized Property Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	130.0	97.3
Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Land, buildings and improvements	$ 57.7	$ 51.8