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v3.23.2

Debt - Narrative (Details) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
May 15, 2023 USD ($) | Nov. 15, 2022 | Aug. 31, 2022 USD ($) | Jan. 31, 2021 USD ($) | May 31, 2018 USD ($) $ / shares shares | Jun. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) shares
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Payments to unwind warrants |  |  |  |  |  |  |  |  | $ 18.4
2023 convertible senior notes | Convertible Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 0.75% |  |  |  |
Principal amount |  |  |  |  | $ 750.0 |  |  |  |
Proceeds from debt, net of issuance costs |  |  |  |  | $ 733.1 |  |  |  |
Debt issuance costs |  |  |  |  |  | $ 16.9 | $ 16.9 |  |
Term of debt instrument |  |  |  |  |  |  | 5 years |  |
Effective interest rate (as a percent) |  |  |  |  |  | 0.50% | 0.50% |  |
Total interest expense |  |  |  |  |  | $ 0.3 | $ 0.6 |  |
Contractual interest expense |  |  |  |  |  | 0.2 | 0.4 |  |
Amortized issuance costs |  |  |  |  |  | $ 0.1 | $ 0.2 |  |
Payment of accrued interest | $ 0.3 |  |  |  |  |  |  |  |
Maturities of debt | $ 76.9 |  |  |  |  |  |  |  |
Securities called by warrants (in shares) | shares |  |  |  |  | 3,018,327 |  |  |  | 2,559,254
Initial conversion price (in USD per share) | $ / shares |  |  |  |  | $ 206.65 |  |  |  |
Payments for convertible bond hedges |  |  |  |  | $ 140.3 |  |  |  |
Exercise price (dollars per share) | $ / shares |  |  |  |  | $ 315.38 |  |  |  |
Value of warrants issued |  |  |  |  | $ 90.0 |  |  |  |
Repurchased amount of debt instrument |  |  |  | $ 20.3 |  |  |  |  | $ 152.0
Repayments of notes |  |  |  | 19.1 |  |  |  |  | 156.0
Accrued interest portion of repurchased amount of debt instrument |  |  |  | $ 0.1 |  |  |  | $ 0.4 | $ 0.3
2023 convertible senior notes | Convertible Notes | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Initial conversion rate (shares per $1,000) |  | 0.004839 |  |  |  |  |  |  |
2023 convertible senior notes | Convertible Notes | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Initial conversion rate (shares per $1,000) |  | 0.0062907 |  |  |  |  |  |  |
2023 convertible senior notes | Convertible Notes | Notes repurchased in August 2022 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments of notes |  |  | $ 223.7 |  |  |  |  |  |
Repurchased amount of debt instrument |  |  | $ 227.8 |  |  |  |  |  |

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