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Debt - Debt Outstanding (Details) € in Millions, $ in Millions | Dec. 31, 2022 USD ($) | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | --- | --- | ---
Debt Instrument |  |  |  |  |
Total debt | $ 575.2 |  | $ 420.9 |  |
Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Unamortized issuance cost | (4.6) |  | (5.3) |  |
Ark 2007 Notes | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Total debt | 30.0 |  | 30.0 |  |
Ark 2021 Notes Tranche 1 |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | € |  | € 39.1 |  |  |
Ark 2021 Notes Tranche 1 | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | 41.3 |  | 44.2 |  |
Ark 2021 Notes Tranche 2 | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | 47.0 |  | 47.0 |  |
Ark 2021 Notes Tranche 3 | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | 70.0 |  | 70.0 |  |
Ark 2021 Notes | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Total debt | $ 153.7 |  | $ 155.9 |  |
Ark |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective yield (as a percent) | 7.60% | 7.60% | 6.90% |  |
Ark | Ark Subordinated Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Total debt | $ 183.7 |  | $ 185.9 |  |
Kudu | Kudu Credit Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Total debt | 208.3 |  | 218.2 |  |
Other Operations | Other Operations debt |  |  |  |  |
Debt Instrument |  |  |  |  |
Unamortized issuance cost | (0.7) |  | (0.3) |  |
Total debt | 36.7 |  | 16.8 |  |
Debt instrument at face value | $ 37.4 |  | 17.1 |  |
Effective yield (as a percent) | 6.60% | 6.60% |  |  |
Secured Debt | HG Global Senior Notes |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | $ 150.0 |  | 0.0 |  |
Unamortized issuance cost | (3.5) |  | 0.0 |  |
Total debt | $ 146.5 |  | $ 0.0 |  |
Effective yield (as a percent) | 8.90% | 8.90% |  |  |
Term Loan | Kudu Credit Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective yield (as a percent) | 6.10% | 6.10% | 4.30% |  |
Term Loan | Other Operations debt |  |  |  |  |
Debt Instrument |  |  |  |  |
Long-term debt, gross | $ 36.7 |  |  |  |
Term Loan | Kudu | Kudu Credit Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Unamortized issuance cost | (6.9) |  | $ (7.2) |  |
Total debt | 215.2 |  | 225.4 | $ 0.0 | $ 0.0
Debt instrument at face value | $ 215.2 |  | $ 225.4 |  |
Term Loan | Other Operations | Other Operations debt |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective yield (as a percent) |  |  | 7.50% |  |

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