Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
Net earned premium	$ 94.0	$ 64.4	$ 181.3	$ 124.9
Commission income, net	14.7	16.1	29.1	32.0
Service and fee income	2.9	3.0	5.7	5.8
Net investment income	5.7	6.1	11.5	12.0
Total revenue	117.3	89.6	227.6	174.7
Expenses:
Losses and loss adjustment expenses	44.5	60.4	136.9	113.0
Insurance related expenses	32.8	24.5	63.0	45.3
Technology and development	8.1	7.8	16.2	16.1
Sales and marketing	9.2	13.4	18.1	27.8
General and administrative	17.4	19.9	33.9	38.2
Impairment and restructuring charges	1.2	0.0	1.2	3.6
Other expense (income), net	0.1	0.1	(0.1)	0.0
Total expenses	113.3	126.1	269.2	244.0
Income (loss) before income taxes	4.0	(36.5)	(41.6)	(69.3)
Income tax expense (benefit)	0.1	0.7	(0.1)	1.0
Net income (loss)	3.9	(37.2)	(41.5)	(70.3)
Net income attributable to noncontrolling interests, net of tax	2.6	3.3	4.9	5.9
Net income (loss) attributable to Hippo	1.3	(40.5)	(46.4)	(76.2)
Other comprehensive income (loss):
Change in net unrealized gain (loss) on investments, net of tax	0.7	(0.2)	2.8	(0.7)
Comprehensive income (loss) attributable to Hippo	2.0	(40.7)	(43.6)	(76.9)
Per share data:
Net loss attributable to Hippo - basic	1.3	(40.5)	(46.4)	(76.2)
Net loss attributable to Hippo - diluted	$ 1.3	$ (40.5)	$ (46.4)	$ (76.2)
Weighted-average shares used in computing net loss per share attributable to Hippo - basic (in shares)	25,343,457	24,633,960	25,168,442	24,583,168
Weighted-average shares used in computing net loss per share attributable to Hippo - diluted (in shares)	26,023,780	24,633,960	25,168,442	24,583,168
Net loss per share attributable to Hippo - basic (in dollars per share)	$ 0.05	$ (1.64)	$ (1.84)	$ (3.10)
Net loss per share attributable to Hippo - diluted (in dollars per share)	$ 0.05	$ (1.64)	$ (1.84)	$ (3.10)