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Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 01, 2020	Mar. 31, 2018	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2019	Aug. 31, 2021	Sep. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant date fair value of options (in dollars per share)			$ 23.38
Intrinsic value of options exercised			$ 0.5
Restricted stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic value of options, vested			2.6
Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incentive units authorized for issuance (in shares)		6,199,477
Incentive Plan \| Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense			19.9	$ 16.6
Compensation expense not yet recognized			$ 97.7
Compensation expense not yet recognized, period of recognition (in years)			1 year 10 months 24 days
2018 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance (in shares)							4,067,007
Common stock, shares remained available for purchase (in shares)			2,115,004
Annual increase in reserved shares as percentage of outstanding common stock					4.00%
Compensation expense on options not yet recognized			$ 67.9
Stock options vested and expected to vest (in shares)			7,743,483
Restricted stock units vested and expected to vest (in shares)			916,138
2018 Plan \| Restricted stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense not yet recognized			$ 29.8
Compensation expense not yet recognized, period of recognition (in years)			2 years 2 months 12 days
2018 Plan \| Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense not yet recognized, period of recognition (in years)			1 year 8 months 12 days
Minimum \| Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based award, vesting period (in years)		1 year
Minimum \| 2018 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual increase in reserved shares of common stock (in shares)					4,989,593
Maximum \| Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance (in shares)							1,277,181
Share-based award, vesting period (in years)		4 years
2018 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance (in shares)							311,850
Common stock reserved for issuance represented as percentage on outstanding common stock	1.00%
Common stock, shares remained available for purchase (in shares)			2,495,756
Common stock, shares issued (in shares)			23,206	5,749
2018 ESPP \| Incentive Plan \| Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense			$ 0.3	$ 0.1
Common \| Equity Distribution Agreement \| At-the-Market Offering \| Piper Sandler and Cantor
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock aggregate offering price						$ 300.0
Shares issued and sold (in shares)			0