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v3.22.2

Summary of Significant Accounting Policies - Significant Observable Inputs of Deferred Business Acquisition Liabilities (Details) - Motus - USD ($) $ / shares in Units, $ in Millions | Jun. 30, 2022 | Aug. 31, 2021
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Share price used to calculate issuable shares (in dollars per share) |  | $ 27.11
Insmed share price as of June 30, 2022 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Share price used to calculate issuable shares (in dollars per share) | $ 19.72 |
Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Deferred consideration | $ 10.8 |

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