{"cik":1004155,"taxonomy":"us-gaap","tag":"OperatingLeaseLiabilityNoncurrent","label":"Operating Lease, Liability, Noncurrent","description":"Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.","entityName":"The Southern Company","units":{"USD":[{"end":"2025-12-31","val":1287000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2025Q4I"},{"end":"2026-06-30","val":1298000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2026Q2I"}]}}