Cover |
3 Months Ended |
|---|---|
Mar. 31, 2026 | |
| Cover [Abstract] | |
| Document Type | 6-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 31, 2026 |
| Document Fiscal Period Focus | Q1 |
| Document Fiscal Year Focus | 2026 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-38064 |
| Entity Registrant Name | COSCIENS Biopharma Inc. |
| Entity Central Index Key | 0001113423 |
| Entity Address, Address Line One | c/o Borden Ladner Gervais, LLP |
| Entity Address, Address Line Two | 22 Adelaide St. West, Suite 3400 |
| Entity Address, Address Line Three | Bay Adelaide Centre, East Tower |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Postal Zip Code | M5H 4E3 |
| X | ||||||||||
- Definition Boolean flag that is true when the XBRL content amends previously-filed or accepted submission. No definition available.
|
| X | ||||||||||
- Definition Cover page. No definition available.
|
| X | ||||||||||
- Definition End date of current fiscal year in the format --MM-DD. No definition available.
|
| X | ||||||||||
- Definition Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY. No definition available.
|
| X | ||||||||||
- Definition This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
|
| X | ||||||||||
- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. No definition available.
|
| X | ||||||||||
- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'. No definition available.
|
| X | ||||||||||
- Definition Address Line 1 such as Attn, Building Name, Street Name No definition available.
|
| X | ||||||||||
- Definition Address Line 2 such as Street or Suite number No definition available.
|
| X | ||||||||||
- Definition Address Line 3 such as an Office Park No definition available.
|
| X | ||||||||||
- Definition Name of the City or Town No definition available.
|
| X | ||||||||||
- Definition Code for the postal or zip code No definition available.
|
| X | ||||||||||
- Definition Name of the state or province. No definition available.
|
| X | ||||||||||
- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen. No definition available.
|
| X | ||||||||||
- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|