{"cik":1004155,"taxonomy":"us-gaap","tag":"Liabilities","label":"Liabilities","description":"Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.","entityName":"The Southern Company","units":{"USD":[{"end":"2008-09-30","val":4751000000,"accn":"0001004155-09-000088","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-10-29","frame":"CY2008Q3I"},{"end":"2008-12-31","val":5026000000,"accn":"0001004155-09-000088","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-10-29"},{"end":"2008-12-31","val":5026000000,"accn":"0001004155-10-000016","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-04","frame":"CY2008Q4I"},{"end":"2009-03-31","val":4394000000,"accn":"0001004155-10-000033","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-04-27","frame":"CY2009Q1I"},{"end":"2009-06-30","val":4361000000,"accn":"0001004155-10-000067","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-07-29","frame":"CY2009Q2I"},{"end":"2009-09-30","val":4436000000,"accn":"0001004155-09-000088","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-10-29"},{"end":"2009-09-30","val":4436000000,"accn":"0001004155-10-000087","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02","frame":"CY2009Q3I"},{"end":"2009-12-31","val":5255000000,"accn":"0001004155-10-000016","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-04"},{"end":"2009-12-31","val":5255000000,"accn":"0001004155-10-000033","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-04-27"},{"end":"2009-12-31","val":5255000000,"accn":"0001004155-10-000067","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-07-29"},{"end":"2009-12-31","val":5255000000,"accn":"0001004155-10-000087","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02"},{"end":"2009-12-31","val":5255000000,"accn":"0001004155-11-000040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-09","frame":"CY2009Q4I"},{"end":"2010-03-31","val":4974000000,"accn":"0001004155-10-000033","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-04-27"},{"end":"2010-03-31","val":4979000000,"accn":"0001004155-11-000092","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-03","frame":"CY2010Q1I"},{"end":"2010-06-30","val":4951000000,"accn":"0001004155-10-000067","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-07-29"},{"end":"2010-06-30","val":4959000000,"accn":"0001004155-11-000188","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03","frame":"CY2010Q2I"},{"end":"2010-09-30","val":5064000000,"accn":"0001004155-10-000087","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02"},{"end":"2010-09-30","val":5062000000,"accn":"0001004155-11-000231","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-02","frame":"CY2010Q3I"},{"end":"2010-12-31","val":5682000000,"accn":"0001004155-11-000040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-09"},{"end":"2010-12-31","val":5686000000,"accn":"0001004155-11-000092","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-03"},{"end":"2010-12-31","val":5686000000,"accn":"0001004155-11-000188","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03"},{"end":"2010-12-31","val":5684000000,"accn":"0001004155-11-000231","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-02"},{"end":"2010-12-31","val":5684000000,"accn":"0001004155-12-000017","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-22","frame":"CY2010Q4I"},{"end":"2011-03-31","val":5106000000,"accn":"0001004155-11-000092","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-03"},{"end":"2011-03-31","val":5106000000,"accn":"0001004155-12-000029","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-01","frame":"CY2011Q1I"},{"end":"2011-06-30","val":5303000000,"accn":"0001004155-11-000188","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03"},{"end":"2011-06-30","val":5303000000,"accn":"0001004155-12-000082","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-01","frame":"CY2011Q2I"},{"end":"2011-09-30","val":5578000000,"accn":"0001004155-11-000231","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-02"},{"end":"2011-09-30","val":5578000000,"accn":"0001004155-12-000097","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01","frame":"CY2011Q3I"},{"end":"2011-12-31","val":10574000000,"accn":"0001004155-12-000017","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-22"},{"end":"2011-12-31","val":10574000000,"accn":"0001004155-12-000029","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-01"},{"end":"2011-12-31","val":10574000000,"accn":"0001004155-12-000082","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-01"},{"end":"2011-12-31","val":10574000000,"accn":"0001004155-12-000097","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01"},{"end":"2011-12-31","val":10574000000,"accn":"0001004155-13-000018","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-06","frame":"CY2011Q4I"},{"end":"2012-03-31","val":9813000000,"accn":"0001004155-12-000029","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-01"},{"end":"2012-03-31","val":9813000000,"accn":"0001004155-13-000037","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-30","frame":"CY2012Q1I"},{"end":"2012-06-30","val":9845000000,"accn":"0001004155-12-000082","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-01"},{"end":"2012-06-30","val":9800000000,"accn":"0001004155-13-000071","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-31","frame":"CY2012Q2I"},{"end":"2012-09-30","val":10197000000,"accn":"0001004155-12-000097","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01"},{"end":"2012-09-30","val":10105000000,"accn":"0001004155-13-000084","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-30","frame":"CY2012Q3I"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-13-000018","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-06"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-13-000037","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-30"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-13-000071","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-31"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-13-000084","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-30"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-14-000008","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-06"},{"end":"2012-12-31","val":10706000000,"accn":"0001004155-14-000056","fy":2013,"fp":"FY","form":"8-K","filed":"2014-09-03"},{"end":"2012-12-31","val":10679000000,"accn":"0001004155-14-000067","fy":2013,"fp":"FY","form":"10-K","filed":"2014-11-07","frame":"CY2012Q4I"},{"end":"2013-03-31","val":10399000000,"accn":"0001004155-13-000037","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-30"},{"end":"2013-03-31","val":10399000000,"accn":"0001004155-14-000023","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-29"},{"end":"2013-03-31","val":10369000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2013-03-31","val":10369000000,"accn":"0001004155-14-000076","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-11-26","frame":"CY2013Q1I"},{"end":"2013-06-30","val":10240000000,"accn":"0001004155-13-000071","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-31"},{"end":"2013-06-30","val":10240000000,"accn":"0001004155-14-000038","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-30"},{"end":"2013-06-30","val":10206000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2013-06-30","val":10206000000,"accn":"0001004155-14-000077","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26","frame":"CY2013Q2I"},{"end":"2013-09-30","val":10341000000,"accn":"0001004155-13-000084","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-30"},{"end":"2013-09-30","val":10304000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2013-09-30","val":10304000000,"accn":"0001004155-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-26","frame":"CY2013Q3I"},{"end":"2013-12-31","val":10980000000,"accn":"0001004155-14-000008","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-06"},{"end":"2013-12-31","val":10980000000,"accn":"0001004155-14-000023","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-29"},{"end":"2013-12-31","val":10980000000,"accn":"0001004155-14-000038","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-30"},{"end":"2013-12-31","val":10980000000,"accn":"0001004155-14-000056","fy":2013,"fp":"FY","form":"8-K","filed":"2014-09-03"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-14-000067","fy":2013,"fp":"FY","form":"10-K","filed":"2014-11-07"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-14-000076","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-11-26"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-14-000077","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-26"},{"end":"2013-12-31","val":10937000000,"accn":"0001004155-15-000004","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-12","frame":"CY2013Q4I"},{"end":"2014-03-31","val":11465000000,"accn":"0001004155-14-000023","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-29"},{"end":"2014-03-31","val":11421000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2014-03-31","val":11421000000,"accn":"0001004155-14-000076","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-11-26"},{"end":"2014-03-31","val":11421000000,"accn":"0001004155-15-000017","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-28","frame":"CY2014Q1I"},{"end":"2014-06-30","val":10368000000,"accn":"0001004155-14-000038","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-30"},{"end":"2014-06-30","val":10321000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2014-06-30","val":10321000000,"accn":"0001004155-14-000077","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26"},{"end":"2014-06-30","val":10299000000,"accn":"0001004155-15-000045","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-29","frame":"CY2014Q2I"},{"end":"2014-09-30","val":10151000000,"accn":"0001004155-14-000068","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2014-09-30","val":10151000000,"accn":"0001004155-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-26"},{"end":"2014-09-30","val":10130000000,"accn":"0001004155-15-000086","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09","frame":"CY2014Q3I"},{"end":"2014-12-31","val":11081000000,"accn":"0001004155-15-000004","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-12"},{"end":"2014-12-31","val":11081000000,"accn":"0001004155-15-000017","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-28"},{"end":"2014-12-31","val":11060000000,"accn":"0001004155-15-000045","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-29"},{"end":"2014-12-31","val":11060000000,"accn":"0001004155-15-000086","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"end":"2014-12-31","val":11060000000,"accn":"0001004155-16-000098","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-11","frame":"CY2014Q4I"},{"end":"2015-03-31","val":10174000000,"accn":"0001004155-15-000017","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-28"},{"end":"2015-03-31","val":10155000000,"accn":"0001004155-16-000116","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-04","frame":"CY2015Q1I"},{"end":"2015-06-30","val":9846000000,"accn":"0001004155-15-000045","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-29"},{"end":"2015-06-30","val":9846000000,"accn":"0001004155-16-000202","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-07-26","frame":"CY2015Q2I"},{"end":"2015-09-30","val":10296000000,"accn":"0001004155-15-000086","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09","frame":"CY2015Q3I"},{"end":"2015-12-31","val":10779000000,"accn":"0001004155-16-000098","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-11"},{"end":"2015-12-31","val":10779000000,"accn":"0001004155-16-000116","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-04"},{"end":"2015-12-31","val":10779000000,"accn":"0001004155-16-000202","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-07-26","frame":"CY2015Q4I"},{"end":"2016-03-31","val":10266000000,"accn":"0001004155-16-000116","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-04","frame":"CY2016Q1I"},{"end":"2016-06-30","val":10514000000,"accn":"0001004155-16-000202","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-07-26","frame":"CY2016Q2I"},{"end":"2025-12-31","val":116853000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2025Q4I"},{"end":"2026-06-30","val":119685000000,"accn":"0000092122-26-000054","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-30","frame":"CY2026Q2I"}]}}