| Submission | Oct. 29, 2025 | 
|---|---|
| Submission [Line Items] | |
| Central Index Key | 0000764065 | 
| Registrant Name | Cleveland-Cliffs Inc. | 
| Registration File Number | 333-291146 | 
| Form Type | S-3 | 
| Submission Type | 424B5 | 
| Fee Exhibit Type | EX-FILING FEES | 
| Offset Table N/A | N/A | 
| Combined Prospectus Table N/A | N/A |