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Significant Transactions - Kudu (Details) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
May 26, 2022 USD ($) | Jun. 30, 2022 USD ($) | May 25, 2022
Kudu |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Basic ownership | 89.30% |  | 99.10%
Mass Mutual |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Equity capital raised | $ 64.1 |  |
Kudu Investment Management, LLC |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Equity capital raised | 0.4 |  |
White Mountains |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Equity capital raised | $ 50.0 |  |
Kudu |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Pre-money valuation | 1.3 |  |
Pre-money valuation, amount | $ 114.0 |  |
Enterprise value excluded |  | $ 39.1 |
Kudu |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Equity capital raised | $ 114.5 |  |

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