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Property, net (Notes)
3 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Property, net PROPERTY, NET
December 31,
2020
September 30,
2020
Property, at cost$21.7 $22.6 
Accumulated depreciation(12.0)(12.4)
   Property, net$9.7 $10.2