Consolidated Statements Stockholders’ Equity - USD ($) $ in Millions	Total	Total Hippo Stockholders' Equity	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non controlling Interests
Beginning balance (in shares) at Dec. 31, 2021			22,601,245
Beginning balance at Dec. 31, 2021	$ 861.7	$ 859.6	$ 0.0	$ 1,488.3	$ (0.7)	$ (628.0)	$ 2.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(326.5)	(333.4)				(333.4)	6.9
Other comprehensive income (loss)	(6.3)	(6.3)			(6.3)
Issuance of common stock from stock plans and contingently issuable shares (in shares)			558,314
Issuance of common stock from stock plans and contingently issuable shares	4.9	4.9		4.9
Issuance of common stock for earnout from acquisition (in shares)			45,474
Repurchases of common stock (in shares)			(3,599)
Shares withheld related to net share settlement	(3.9)	(3.9)		(3.9)
Stock-based compensation expense	68.7	68.7		68.7
Other	$ (5.1)	0.3				0.3	(5.4)
Ending balance (in shares) at Dec. 31, 2022	23,201,434		23,201,434
Ending balance at Dec. 31, 2022	$ 593.5	589.9	$ 0.0	1,558.0	(7.0)	(961.1)	3.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(263.0)	(273.1)				(273.1)	10.1
Other comprehensive income (loss)	4.1	4.1			4.1
Issuance of common stock from stock plans and contingently issuable shares (in shares)			1,047,668
Issuance of common stock from stock plans and contingently issuable shares	$ 3.3	3.3		3.3
Repurchases of common stock (in shares)	(100,000)		(100,794)
Repurchases of common stock	$ (1.8)	(1.8)		(1.8)
Shares withheld related to net share settlement	(4.7)	(4.7)		(4.7)
Stock-based compensation expense	63.1	63.1		63.1
Acquisitions of noncontrolling interests	(3.2)	(2.7)		(2.7)			(0.5)
Other	$ (6.6)	(0.2)				(0.2)	(6.4)
Ending balance (in shares) at Dec. 31, 2023	24,148,308		24,148,308
Ending balance at Dec. 31, 2023	$ 384.7	$ 377.9	$ 0.0	$ 1,615.2	$ (2.9)	$ (1,234.4)	$ 6.8