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Inventories (Tables)
12 Months Ended
Dec. 31, 2024
Inventory Disclosure [Abstract]  
Schedule of Inventory
The classes of inventory as of December 31 are summarized as follows ($ in millions):
20242023
Finished goods$181.6 $196.4 
Work in process25.1 17.2 
Raw materials91.0 100.3 
Reserve for inventory obsolescence(56.7)(55.1)
Total$241.0 $258.8