| Segment | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 |
|---|---|---|---|---|---|---|---|---|
| Ameren Illinois Electric Distribution | $509.00M | $552.00M | $522.00M | $572.00M | $573.00M | $699.00M | $555.00M | $643.00M |
| Ameren Illinois Natural Gas | $148.00M | $121.00M | — | $411.00M | $158.00M | $117.00M | — | $436.00M |
| Ameren Transmission | $191.00M | $210.00M | $195.00M | $210.00M | $208.00M | $240.00M | $204.00M | $227.00M |
| Ameren Illinois Transmission | -$27.00M | -$35.00M | $495.00M | $154.00M | $152.00M | $176.00M | $155.00M | $164.00M |
| Union Electric Company | -$9.00M | -$9.00M | -$8.00M | -$7.00M | -$8.00M | -$9.00M | -$8.00M | -$10.00M |
| Total | -$9.00M | -$9.00M | -$8.00M | -$7.00M | -$8.00M | -$9.00M | -$8.00M | -$10.00M |