Regulatory Matters - Mississippi Power (Details) $ in Millions	Mar. 28, 2019 USD ($)
MRA Revenue \| MISSISSIPPI POWER CO
Loss Contingencies [Line Items]
Decrease in base rate under cost based electric tariff	$ 3.7

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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