Submission |
Sep. 15, 2025 |
|---|---|
| Submission [Line Items] | |
| Central Index Key | 0000018654 |
| Registrant Name | Ameren Illinois Co |
| Registration File Number | 333-274977-01 |
| Form Type | S-3 |
| Submission Type | 424B2 |
| Fee Exhibit Type | EX-FILING FEES |
| Offering Table N/A | |
| Offset Table N/A | N/A |
| Combined Prospectus Table N/A | N/A |
Offerings - Offering: 1 |
Sep. 15, 2025
USD ($)
shares
|
|---|---|
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | Ameren Illinois Company's 5.625% First Mortgage Bonds due 2055 |
| Amount Registered | shares | 350,000,000 |
| Maximum Aggregate Offering Price | $ 361,186,000.00 |
| Fee Rate | 0.01531% |
| Amount of Registration Fee | $ 55,297.58 |
| Offering Note | These "Calculation of Filing Fee Tables" shall be deemed to update the "Calculation of Filing Fee Tables" exhibit in Ameren Illinois Company's Registration Statement on Form S-3 (File No. 333-274977-01), which was filed on October 13, 2023. |
Fees Summary |
Sep. 15, 2025
USD ($)
|
|---|---|
| Fees Summary [Line Items] | |
| Total Offering | $ 361,186,000.00 |
| Previously Paid Amount | 0.00 |
| Total Fee Amount | 55,297.58 |
| Total Offset Amount | 0.00 |
| Net Fee | 55,297.58 |
| Narrative - Max Aggregate Offering Price | $ 361,186,000.00 |
| Final Prospectus | true |