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v3.24.3

Revenue from Contracts with Customers and Lease Income - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | $ 181 | $ 181 | $ 116
Contract assets | 379 | 379 | 271
Revenue from contracts with customers recognized | 20 | 97 |
GEORGIA POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 49 | 49 | 1
Contract assets | 202 | 202 | 121
Revenue from contracts with customers recognized | 0 | 0 |
SOUTHERN Co GAS |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 3 | 3 | 0
Contract assets | 71 | 71 | 56
Revenue from contracts with customers recognized | 0 | 0 |
ALABAMA POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 0 | 0 | 0
Contract assets | 7 | 7 | 2
Revenue from contracts with customers recognized | 0 | 0 |
MISSISSIPPI POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 0 | 0 | 0
Contract assets | 0 | 0 | 0
Revenue from contracts with customers recognized | 0 | 0 |
SOUTHERN POWER CO |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 2 | 2 | 4
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 | 68 | $ 68 |
Unregulated Distributed Generation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | 132 | 132 | 115
Contract assets | $ 102 | $ 102 | $ 91

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