Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income	$ 621	$ 931	$ 1,461	$ 2,989
Qualifying hedges:
Changes in fair value, net of tax	10	(32)	(75)	(60)
Reclassification adjustment for amounts included in net income, net of tax	(9)	(3)	29	24
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	3	0	3	1
Total other comprehensive income (loss)	4	(35)	(43)	(35)
Comprehensive Income	625	896	1,418	2,954
Dividends on preferred stock of subsidiaries	4	3	7	7
Comprehensive income (loss) attributable to noncontrolling interests	5	29	(26)	0
Comprehensive Income (Loss) Attributable to Parent	616	864	1,437	2,947
ALABAMA POWER CO
Net income	302	299	585	520
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1	1	2	2
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	1	1	2	2
Comprehensive Income	303	300	587	522
Dividends on preferred stock of subsidiaries	4	3	7	7
GEORGIA POWER CO
Net income	308	448	638	759
Qualifying hedges:
Changes in fair value, net of tax	0	(28)	(2)	(28)
Reclassification adjustment for amounts included in net income, net of tax	2	1	3	1
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	2	(27)	1	(27)
Comprehensive Income	310	421	639	732
MISSISSIPPI POWER CO
Net income	39	37	71	74
Qualifying hedges:
Changes in fair value, net of tax	0	0	(1)	0
Reclassification adjustment for amounts included in net income, net of tax	0	0	1	1
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	0	0	0	1
Comprehensive Income	39	37	71	75
SOUTHERN POWER CO
Net income	68	203	112	230
Qualifying hedges:
Changes in fair value, net of tax	11	(1)	(50)	(30)
Reclassification adjustment for amounts included in net income, net of tax	(15)	(7)	13	17
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	1	0	1	0
Total other comprehensive income (loss)	(3)	(8)	(36)	(13)
Comprehensive Income	65	195	76	217
Comprehensive income (loss) attributable to noncontrolling interests	5	29	(26)	0
Comprehensive Income (Loss) Attributable to Parent	60	166	102	217
SOUTHERN Co GAS
Net income	71	106	346	376
Qualifying hedges:
Changes in fair value, net of tax	(1)	(3)	(21)	(3)
Reclassification adjustment for amounts included in net income, net of tax	1	0	6	0
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	0	0	0	(1)
Total other comprehensive income (loss)	0	(3)	(15)	(4)
Comprehensive Income	$ 71	$ 103	$ 331	$ 372