Commitments and Contingencies - Construction Commitments and Fuel Contracts (Details) - PAC $ in Millions	Jun. 30, 2022 USD ($)
Construction Commitment
Long-Term Purchase Commitment [Line Items]
Purchase obligation	$ 849
Coal Supply Agreements
Long-Term Purchase Commitment [Line Items]
Purchase obligation	$ 200

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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