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+ References

No definition available.

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

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Significant Transactions - Kudu (Details) $ in Millions		9 Months Ended
Significant Transactions - Kudu (Details) $ in Millions	May 26, 2022 USD ($)	Sep. 30, 2022 USD ($)	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		$ 41.1
Kudu
Other Significant Noncash Transactions [Line Items]
Equity capital raised	$ 114.5