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Inventoried Costs (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Inventory Disclosure [Abstract]    
Raw materials $ 84.9 $ 78.0
Work in process 66.0 72.9
Finished goods 3.9 5.3
Total inventoried costs $ 154.8 $ 156.2