Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended	12 Months Ended
	Jan. 01, 2025	Oct. 14, 2022	Jun. 28, 2022	Jul. 02, 2020	Jul. 31, 2015	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 64.5	$ 59.9	$ 59.3
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized expense, stock options						$ 36.3
Unrecognized expense, period for recognition						10 months 24 days
Stock-based compensation expense						$ 29.8	37.6	47.8
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized expense, RSUs						$ 80.8
Unrecognized expense, period for recognition						1 year 4 months 24 days
Granted (usd per share)						$ 21.01
Stock-based compensation expense						$ 28.2	19.8	11.5
Warrant liability
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 6.5	2.5	$ 0.0
Warrant liability | Omnibus Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years				5 years
Class of warrant issued of common stock (in shares)		3,352,025
Granted (usd per share)		$ 20.37
Unrecognized compensation expense related to warrants						$ 59.3	$ 65.8
Vested warrant shares						181,191
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)				5,503,678
Common stock reserved for issuance, annual increase, percentage of outstanding shares				5.00%
Maximum shares that may be issued upon exercise of incentive stock options (in shares)				3,650,000
Additional shares authorized (in shares)						4,679,331
2020 Plan | Subsequent event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance, annual increase, percentage of outstanding shares	5.00%
Number of additional shares authorized (in shares)	3,636,043
2020 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)				1,000,000
Common stock reserved for issuance, annual increase, percentage of outstanding shares				1.00%
Additional shares authorized (in shares)						0
Number of shares available for issuance, annual increase (in shares)				1,000,000
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					7,312,590
Additional shares authorized (in shares)						0
2015 Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by each option					1
Vesting period					4 years
Expiration period					10 years
Assumed Plans | Metromile Acquisition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation equity awards granted (in shares)			404,207
Employee Share Purchase Plan (ESPP) | Subsequent event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized (in shares)	0