| Segment | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 |
|---|---|---|---|---|---|---|---|---|
| Ameren Illinois Natural Gas | — | — | — | $38.00M | $3.00M | -$4.00M | — | $44.00M |
| Ameren Transmission | — | — | — | $31.00M | $33.00M | -$16.00M | — | $32.00M |
| Ameren Illinois Electric Distribution | — | — | — | $16.00M | $13.00M | $19.00M | — | $24.00M |
| Ameren Illinois Transmission | — | — | — | $22.00M | $25.00M | $2.00M | — | $23.00M |
| Union Electric Company | $1.00M | -$6.00M | -$83.00M | $4.00M | $7.00M | $32.00M | $0.00 | $3.00M |
| Total | $39.00M | $57.00M | — | $50.00M | $43.00M | $52.00M | $0.00 | $60.00M |