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v3.23.2

Revenue from Contracts with Customers and Lease Income - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | $ 73 | $ 73 | $ 45
Contract assets | 167 | 167 | 156
GEORGIA POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 28 | 28 | 9
Contract assets | 73 | 73 | 89
Revenue from contracts with customers recognized | 0 | 0 |
SOUTHERN Co GAS |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 0 | 0 | 0
Contract assets | 30 | 30 | 0
Revenue from contracts with customers recognized | 0 | 0 |
ALABAMA POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 1 | 1 | 4
Contract assets | 0 | 0 | 2
Revenue from contracts with customers recognized | 0 | 0 |
MISSISSIPPI POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 3 | 3 | 0
Contract assets | 0 | 0 | 0
Revenue from contracts with customers recognized | 0 | 0 |
SOUTHERN POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 1 | 1 | 1
Contract assets | 0 | 0 | 0
Revenue from contracts with customers recognized | 0 | $ 0 |
Retail Customer Fixed Bill Programs | GEORGIA POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract term |  | 1 year |
Energy Efficiency Enhancement And Upgrade | SOUTHERN Co GAS |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 41 | $ 41 |
Unregulated Distributed Generation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 42 | 42 | 32
Contract assets | $ 64 | $ 64 | $ 65

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