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Supplemental Information (Leases) (Details) $ in Millions | Sep. 30, 2024 USD ($)
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Schedule of Supplemental Balance Sheet Information Related to Operating Leases [Line Items] |
Operating Lease, Right-of-Use Asset | $ 38
Operating Lease, Liability, Current | 6
Operating Lease, Liability, Noncurrent | $ 32
Operating Lease, Weighted Average Remaining Lease Term | 23 years
Operating Lease, Weighted Average Discount Rate, Percent | 5.40%
Lessee, Operating Lease, Liability, to be Paid, Maturity [Line Items] |
2024 | $ 2
2025 | 6
2026 | 3
2027 | 2
2028 | 2
Thereafter | 55
Total lease payments | 70
Less imputed interest | 32
Total | 38
Union Electric Company |
Schedule of Supplemental Balance Sheet Information Related to Operating Leases [Line Items] |
Operating Lease, Right-of-Use Asset | 35
Operating Lease, Liability, Current | 5
Operating Lease, Liability, Noncurrent | $ 30
Operating Lease, Weighted Average Remaining Lease Term | 24 years
Operating Lease, Weighted Average Discount Rate, Percent | 5.40%
Lessee, Operating Lease, Liability, to be Paid, Maturity [Line Items] |
2024 | $ 2
2025 | 5
2026 | 2
2027 | 2
2028 | 2
Thereafter | 53
Total lease payments | 66
Less imputed interest | 31
Total | $ 35

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