Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (13.6)		$ (12.5)
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	39.4		39.4
Accumulated Amortization	(13.6)		(12.5)
Net Carrying Amount	25.8		26.9
Amortization expense related to intangible assets	1.1	$ 1.9
State licenses and domain name
Indefinite-lived Intangible Assets [Line Items]
Net Carrying Amount	$ 10.5		10.5
Agency and carrier relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Useful Life Remaining (in years)	5 years 8 months 12 days
Gross Carrying Amount	$ 13.5		13.5
Accumulated Amortization	(3.8)		(3.4)
Net Carrying Amount	9.7		10.1
Indefinite-lived Intangible Assets [Line Items]
Accumulated Amortization	$ (3.8)		(3.4)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Useful Life Remaining (in years)	2 years
Gross Carrying Amount	$ 13.7		13.7
Accumulated Amortization	(9.1)		(8.5)
Net Carrying Amount	4.6		5.2
Indefinite-lived Intangible Assets [Line Items]
Accumulated Amortization	$ (9.1)		(8.5)
Other
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Useful Life Remaining (in years)	6 years
Gross Carrying Amount	$ 1.7		1.7
Accumulated Amortization	(0.7)		(0.6)
Net Carrying Amount	1.0		1.1
Indefinite-lived Intangible Assets [Line Items]
Accumulated Amortization	$ (0.7)		$ (0.6)