Financing Arrangements - Summary of Current and Non-current Debt (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt	$ 20.4	$ 44.9
Less current portion of debt	20.4	44.9
Total non-current portion of debt	0.0	0.0
Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Total debt	$ 20.4	$ 44.9

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