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Inventories (Notes)
9 Months Ended
Jun. 30, 2025
Inventory [Abstract]  
Inventories INVENTORIES
June 30,
2025
September 30,
2024
Raw materials and supplies$90.7 $57.3 
Work in process— — 
Finished products324.9 228.8 
   Inventories$415.6 $286.1