Palo Verde (Narrative) (Details) - Subsequent Event - Suit Against Department of Energy for Spent Fuel $ in Millions	Oct. 31, 2019 USD ($)
Palo Verde Generation Station
Jointly Owned Utility Plant Interests [Line Items]
Litigation, Claim Amount	$ 2.5
Palo Verde Participants
Jointly Owned Utility Plant Interests [Line Items]
Litigation, Claim Amount	$ 16.0

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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