Significant Transactions - Bamboo (Details) - USD ($) $ in Millions	Jan. 02, 2024	Mar. 31, 2024
Bamboo Ide8 Insurance Services LLC
Other Significant Transactions [Line Items]
Assets and goodwill acquired	$ 479.5
Liabilities acquired	91.7
Noncontrolling interest acquired	111.1
Total goodwill and other intangible assets	371.4
Transaction costs	4.0	$ 0.3
Bamboo Ide8 Insurance Services LLC
Other Significant Transactions [Line Items]
Contributions to subsidiaries	296.7
Contribution of primary capital	36.0
Cash contributions for transaction	$ 20.0
Basic ownership	72.80%
Ownership percentage, after equity incentives	63.70%
Bamboo Ide8 Insurance Services LLC \| Bamboo Management
Other Significant Transactions [Line Items]
Basic ownership	16.10%
Ownership percentage, after equity incentives	26.60%

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