MGP, Landfill and Disposal Sites (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
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| Manufactured Gas Plant (MGP) Site [Abstract] | ||||||
| Cost of identified MGP, landfill, or disposal sites under current investigation and/or remediation | $ 15 | $ 15 | ||||
| Lessee, Lease, Description [Line Items] | ||||||
| Operating Lease, Cost | 36 | $ 64 | 78 | $ 134 | ||
| Finance Lease, Right-of-Use Asset, Amortization | 10 | 1 | 20 | 2 | ||
| Finance Lease, Interest Expense | 25 | 3 | 47 | 7 | ||
| Finance Lease, Cost | 35 | 4 | 67 | 9 | ||
| PPAs | ||||||
| Lessee, Lease, Description [Line Items] | ||||||
| Operating Lease, Cost | 31 | 54 | 60 | 111 | ||
| Property, Plant and Equipment, Other Types | ||||||
| Lessee, Lease, Description [Line Items] | ||||||
| Operating Lease, Cost | [1] | $ 5 | $ 10 | $ 18 | $ 23 | |
| Other MGP, Landfill, or Disposal Sites [Domain] | ||||||
| Manufactured Gas Plant (MGP) Site [Abstract] | ||||||
| Number of identified MGP, landfill, or disposal sites under current investigation and/or remediation | 15 | 15 | ||||
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