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Related Party Transactions - Additional Information (Details)	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Oct. 31, 2021 USD ($) ft²	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2022 USD ($) Founder shares	Sep. 30, 2021 USD ($)	Jun. 30, 2021 shares
Related Party Transaction [Line Items]
Number of founder shareholders | Founder					3
Sublease income		$ 331,000			$ 993,000
Other income (expense)		10,431,000	$ (4,892,000)		(1,378,000)	$ 21,960,000
Office and Laboratory Space
Related Party Transaction [Line Items]
Operating lease term							12 years
Founder Shareholders | Scientific Consulting and Other Expenses
Related Party Transaction [Line Items]
Payments received from (made to) related parties		100,000	100,000		300,000	300,000
Verve Therapeutics, Inc.
Related Party Transaction [Line Items]
Equity securities		18,800,000			18,800,000
Other income (expense)		10,400,000	$ (4,900,000)		(1,400,000)	22,000,000.0
Verve Therapeutics, Inc. | Office and Laboratory Space
Related Party Transaction [Line Items]
Sublease area of rented space | ft²	12,000
Operating lease term	1 year
Sublease, commencement month and year	2021-12
Rental payment over term of sublease	$ 1,400,000
Sublease income		$ 300,000			$ 1,000,000.0
Verve Therapeutics, Inc. | Common Stock
Related Party Transaction [Line Items]
Equity shares held | shares		546,970			546,970		546,970
Verve Therapeutics, Inc. | Research and Development Expense
Related Party Transaction [Line Items]
Purchases from related party		$ 400,000			$ 400,000	$ 200,000
Reimbursed Costs | Prime Agreement | Interest and Other Income (Expense), Net | Prime Medicine Inc | Monthly Fee
Related Party Transaction [Line Items]
Income from related party				$ 30,000.0
Orbital
Related Party Transaction [Line Items]
Percentage of fully diluted equity interest		31.50%			31.50%

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