Stock-Based Compensation - Milestone Options Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
Mar. 31, 2021	Apr. 30, 2022	Apr. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense		$ 31,630,000	$ 13,437,000
Milestone Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	1,404,605
Vesting percentage	100.00%
Share-based payment arrangement, expense		900,000	$ 0
Cost not yet recognized, amount		$ 15,400,000
Cost not yet recognized, period for recognition		4 years 3 months 18 days

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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-Publisher FASB
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gross number of share options (or share units) granted during the period.

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Percentage of vesting of award under share-based payment arrangement.

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