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Borrowings - Interest Expense Related to Convertible and Exchangeable Notes -Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Convertible notes and exchangeable notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense, debt, excluding amortization | $ 2.8 | $ 4.0 | $ 6.5 | $ 8.9

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