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Debt - Settlement of debt (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
May 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021
Debt Instrument [Line Items] |  |  |
Cash Paid |  | $ 0.0 | $ 1,000.0
Net Loss on Inducements and Settlements |  | $ 6.2 | $ 0.3
2017 Senior Convertible Debt | Senior Convertible Debt | Long-term Debt |  |  |
Debt Instrument [Line Items] |  |  |
Principal Amount Settled | $ 31.0 |  |
Cash Paid | 65.3 |  |
Net Loss on Inducements and Settlements | 5.9 |  |
2017 Junior Convertible Debt | Junior Convertible Debt | Long-term Debt |  |  |
Debt Instrument [Line Items] |  |  |
Principal Amount Settled | 3.6 |  |
Cash Paid | 8.2 |  |
Net Loss on Inducements and Settlements | $ 0.3 |  |

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