Scope of Consolidation and Non-Consolidated Entities - Additional Information (Detail) |
6 Months Ended |
|---|---|
Jun. 30, 2026 | |
| Cellectis, Inc. [Member] | |
| Disclosure of Information about Consolidated and Non-consolidated Structured Entities [Line Items] | |
| Ownership interest in subsidiary | 100.00% |
| Cellectis, Inc. [Member] | Cellectis Biologics, Inc. [Member] | |
| Disclosure of Information about Consolidated and Non-consolidated Structured Entities [Line Items] | |
| Ownership interest in subsidiary | 100.00% |
| Primera Therapeutics, Inc. [Member] | |
| Disclosure of Information about Consolidated and Non-consolidated Structured Entities [Line Items] | |
| Voting rights held in associate | 17.00% |