| Submission | Aug. 27, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0000007789 |
| Registrant Name | ASSOCIATED BANC-CORP |
| Registration File Number | 333-280004 |
| Form Type | S-3 |
| Submission Type | 424B5 |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings - Offering: 1 | Aug. 27, 2024 USD ($) |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | $300,000,000 6.455% Fixed Rate / Floating Rate Senior Notes due 2030 |
| Maximum Aggregate Offering Price | $ 300,000,000 |
| Fee Rate | 0.01476% |
| Amount of Registration Fee | $ 44,280 |
| Offering Note | Calculated in accordance with Rule 457(r) under the Securities Act of 1933, as amended. |
| Fees Summary | Aug. 27, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 300,000,000 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 44,280 |
| Total Offset Amount | 0 |
| Net Fee | $ 44,280 |
| Final Prospectus | false |
