{"cik":1004155,"taxonomy":"us-gaap","tag":"OperatingLeaseRightOfUseAsset","label":"Operating Lease, Right-of-Use Asset","description":"Amount of lessee's right to use underlying asset under operating lease.","entityName":"The Southern Company","units":{"USD":[{"end":"2025-12-31","val":1358000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2025Q4I"},{"end":"2026-06-30","val":1369000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2026Q2I"}]}}