v3.20.4
Property, net (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Sep. 30, 2020
Property, Plant and Equipment [Abstract]    
Property, at cost $ 3,021.0 $ 2,979.2
Accumulated depreciation (1,245.0) (1,199.5)
Property, net $ 1,776.0 $ 1,779.7