REGULATORY MATTERS - GPC Tariffs (Details) - Georgia Power $ in Millions	Dec. 31, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	$ 216
Requested rate increase (decrease), amount, due in 2024	191
Requested rate increase (decrease), amount, due in 2025	306
Traditional Base
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	194
Requested rate increase (decrease), amount, due in 2024	275
Requested rate increase (decrease), amount, due in 2025	194
ECCR
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	(21)
Requested rate increase (decrease), amount, due in 2024	(99)
Requested rate increase (decrease), amount, due in 2025	126
DSM
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	37
Requested rate increase (decrease), amount, due in 2024	10
Requested rate increase (decrease), amount, due in 2025	(22)
MFF
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	6
Requested rate increase (decrease), amount, due in 2024	5
Requested rate increase (decrease), amount, due in 2025	9
Traditional Base, Georgia State
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount, due in next fiscal year	$ 122