Contingencies - APC Litigation (Details) - Alabama Department of Environmental Management (ADEM) - Alabama Power $ in Thousands	Sep. 27, 2018 USD ($)	Mar. 02, 2018 generating_plant
Schedule of Regulatory Assets and Liabilities [Line Items]
Penalty for unpermitted discharges \| $	$ 1,250
Number of generating plants with unpermitted discharges \| generating_plant		5

Public Utilities, Number Of Generating Plants With Unpermitted Discharges

No definition available.

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