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Property, net (Notes)
 3 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, net PROPERTY, NET
December 31,
2023		September 30,
2023
Property, at cost$23.2 $24.0 
Accumulated depreciation(14.6)(15.5)
   Property, net$8.6 $8.5