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Property, net (Notes)
 9 Months Ended
Jun. 30, 2024
Property, Plant and Equipment [Abstract]  
Property, net PROPERTY, NET
June 30,
2024		September 30,
2023
Property, at cost$20.7 $24.0 
Accumulated depreciation(12.5)(15.5)
   Property, net$8.2 $8.5