REGULATORY MATTERS - Georgia Power (Details) - GEORGIA POWER CO $ in Millions	Mar. 09, 2020 USD ($)
Public Utilities, General Disclosures [Line Items]
Requested decrease in fuel rates, percentage	16.00%
Requested decrease in fuel rates	$ 329

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.

Name:	us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration