Significant Transactions - Bamboo (Details) - Subsidiary - Bamboo Ide8 Insurance Services LLC - USD ($) $ in Millions	Oct. 02, 2025	Sep. 30, 2025	Dec. 31, 2024
Other Significant Transactions [Line Items]
Ownership percentage, fully diluted		63.70%	63.70%
Subsequent Event
Other Significant Transactions [Line Items]
Equity interest percent of ownership sold	77.00%
Securities purchase agreement, enterprise value of equity interest	$ 1,750.0
Securities purchase agreement, expected proceeds from divestiture of interest in subsidiaries and affiliates	840.0
Contribution of primary capital	$ 250.0
Ownership percentage, fully diluted	15.00%