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Supplemental Balance Sheet Information - Property, Plant and Equipment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 239.9   $ 239.9   $ 240.1
Less accumulated depreciation (129.2)   (129.2)   (122.9)
Total 110.7   110.7   117.2
Depreciation expense 5.0 $ 4.5 10.3 $ 9.4  
Land          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 1.3   1.3   1.3
Buildings and leasehold improvements          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 37.2   37.2   38.0
Machinery and equipment          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 184.9   184.9   182.8
Construction in progress          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 16.5   $ 16.5   $ 18.0