Commodity Derivatives (Details) MWh in Millions, MMBTU in Millions, $ in Millions		Dec. 31, 2024 USD ($) MMBTU MWh	Dec. 31, 2023 USD ($) MWh MMBTU
Derivative [Line Items]
Reclaim Cash Collateral		$ 2	$ 7
Cash Flow Hedges
Derivative [Line Items]
Commodity contracts designated as cash flow hedges		$ 0
Electric Commodity
Derivative [Line Items]
Notional Amount | MWh	[1],[2]	38	48
Natural Gas Commodity
Derivative [Line Items]
Notional Amount | MMBTU	[1],[2]	77	84

[1] Not reflective of net positions in the underlying commodities.

[2] Notional amounts for options included on a gross basis but weighted for the probability of exercise.