Business Combination - Schedule of Estimated Share Consideration of Combined Company (Parenthetical) (Details) - resTORbio	Sep. 15, 2020 shares
Business Acquisition [Line Items]
Number of shares of the combined company owned by resTORbio stockholders	5,207,695
Number of common stock shares sold	54,553

Number of new stock issued during the period.

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Balance Type:	na
Period Type:	duration