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Financing Arrangements - Summary of Current and Non-current Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Total debt $ 13.1 $ 20.4
Less current portion of debt 13.1 20.4
Total non-current portion of debt 0.0 0.0
Convertible Senior Notes due 2025    
Debt Instrument [Line Items]    
Total debt $ 13.1 $ 20.4