Summary of Significant Accounting Policies (Policies)	6 Months Ended
Apr. 30, 2024
Accounting Policies [Abstract]
Unaudited Interim Financial Information	Unaudited Interim Financial Information The accompanying unaudited interim condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial reporting and accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The condensed consolidated balance sheet at October 31, 2023 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. These interim financial statements include the accounts of the Company and its wholly owned subsidiaries, enGene, Inc. and enGene USA, Inc. All intercompany accounts and transactions have been eliminated in consolidation. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated annual financial statements as of October, 31 2023 and 2022 and for the years ended October 31, 2023, and 2022 and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for a fair statement of the Company’s condensed consolidated balance sheet as of April 30, 2024, the condensed consolidated statements of operations for the three and six months ended April 30, 2024 and 2023, the condensed consolidated statement of redeemable convertible preferred shares and shareholders' equity (deficit) for the three and six months ended April 30, 2024 and 2023, and condensed consolidated statements of cash flows for the six months ended April 30, 2024 and 2023. The financial data and other information disclosed in these notes related to the three and six months ended April 30, 2024 and 2023 are unaudited. The results for the three and six months ended April 30, 2024 and 2023, are not necessarily indicative of results to be expected for the year ending October 31, 2024, any other interim periods, or any future year or period.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements There have been no changes from the financial statements for the year ended October 31, 2023.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Apr. 30, 2024

The accompanying unaudited interim condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial reporting and accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The condensed consolidated balance sheet at October 31, 2023 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. These interim financial statements include the accounts of the Company and its wholly owned subsidiaries, enGene, Inc. and enGene USA, Inc. All intercompany accounts and transactions have been eliminated in consolidation. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated annual financial statements as of October, 31 2023 and 2022 and for the years ended October 31, 2023, and 2022 and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for a fair statement of the Company’s condensed consolidated balance sheet as of April 30, 2024, the condensed consolidated statements of operations for the three and six months ended April 30, 2024 and 2023, the condensed consolidated statement of redeemable convertible preferred shares and shareholders' equity (deficit) for the three and six months ended April 30, 2024 and 2023, and condensed consolidated statements of cash flows for the six months ended April 30, 2024 and 2023. The financial data and other information disclosed in these notes related to the three and six months ended April 30, 2024 and 2023 are unaudited. The results for the three and six months ended April 30, 2024 and 2023, are not necessarily indicative of results to be expected for the year ending October 31, 2024, any other interim periods, or any future year or period.

Recently Adopted Accounting Pronouncements

There have been no changes from the financial statements for the year ended October 31, 2023.