Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net cash (used in) provided by operating activities	$ (10.9)	$ 7.1
Cash flows from investing activities:
Capitalized internal use software costs	(6.3)	(7.0)
Purchases of property and equipment	0.0	(0.2)
Purchases of fixed maturities	(49.4)	(24.0)
Maturities of fixed maturities	20.4	18.2
Sales of fixed maturities	0.0	1.4
Purchases of short-term investments	(148.7)	(114.8)
Maturities of short-term investments	146.6	156.6
Sales of short-term investments	4.5	0.2
Net cash (used in) provided by investing activities	(32.9)	30.4
Cash flows from financing activities:
Proceeds from surplus note	47.9	0.0
Taxes paid related to net share settlement of equity awards	(5.4)	(3.8)
Proceeds from issuance of common stock	2.3	2.2
Payments of contingent consideration	(0.4)	(0.5)
Distributions to noncontrolling interests and other	(7.6)	(10.3)
Net cash provided by (used in) financing activities	36.8	(12.4)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(7.0)	25.1
Cash, cash equivalents, and restricted cash at the beginning of the period	232.8	195.1
Cash, cash equivalents, and restricted cash at the end of the period	$ 225.8	$ 220.2