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Property, net (Tables)
3 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, net
 
December 31,
2019
 
September 30, 2019
Property, at cost
$
20.8

 
$
21.1

Accumulated depreciation
(10.2
)
 
(9.4
)
   Property, net
$
10.6

 
$
11.7