| Submission | Dec. 12, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0000036270 |
| Registrant Name | M&T Bank Corporation |
| Registration File Number | 333-274646 |
| Form Type | S-3 |
| Submission Type | 424B2 |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings - Offering: 1 | Dec. 12, 2024 USD ($) shares |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | 5.385% Fixed Rate/Floating Rate Senior Notes due January 16, 2036 |
| Amount Registered | shares | 1,000,000,000 |
| Proposed Maximum Offering Price per Unit | 1 |
| Maximum Aggregate Offering Price | $ 1,000,000,000 |
| Fee Rate | 0.01531% |
| Amount of Registration Fee | $ 153,100 |
| Offering Note | (1) The filing fee is calculated in accordance with 457(o) and 457(r) of the Securities Act of 1933, as amended (the “Act”). In accordance with Rule 456(b) and 457(r) of the Act, the registrant initially deferred payment of all of the registration fee for Registration Statement No. 333-274646 filed on September 22, 2023. |
| Fees Summary | Dec. 12, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 1,000,000,000 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 153,100 |
| Total Offset Amount | 0 |
| Net Fee | $ 153,100 |
