Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income	$ 1,345	$ 1,222	$ 4,335	$ 2,031
Qualifying hedges:
Changes in fair value, net of tax	(92)	(11)	(152)	(19)
Reclassification adjustment for amounts included in net income, net of tax	50	14	74	60
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	1	8	2	11
Total other comprehensive income (loss)	(41)	11	(76)	52
Comprehensive Income (Loss)	1,304	1,233	4,259	2,083
Dividends on preferred stock of subsidiaries	4	4	11	12
Comprehensive income attributable to noncontrolling interests	25	54	26	71
Comprehensive Income (Loss) Attributable to Parent	1,275	1,175	4,222	2,000
ALABAMA POWER CO
Net income	473	377	993	868
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1	1	3	3
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	1	1	3	3
Comprehensive Income (Loss)	474	378	996	871
Dividends on preferred stock of subsidiaries	4	4	11	11
GEORGIA POWER CO
Net income	839	664	1,598	621
Qualifying hedges:
Changes in fair value, net of tax	(35)	0	(62)	0
Reclassification adjustment for amounts included in net income, net of tax	0	1	1	3
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	(35)	1	(61)	3
Comprehensive Income (Loss)	804	665	1,537	624
MISSISSIPPI POWER CO
Net income	65	47	139	87
Qualifying hedges:
Changes in fair value, net of tax	0	0	0	(1)
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	1	0
Comprehensive Income (Loss)	65	47	140	87
Dividends on preferred stock of subsidiaries	0	0	0	1
SOUTHERN POWER CO
Net income	111	146	342	306
Qualifying hedges:
Changes in fair value, net of tax	(53)	(11)	(84)	(19)
Reclassification adjustment for amounts included in net income, net of tax	45	11	64	46
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)	(8)	0	(20)	28
Comprehensive Income (Loss)	103	146	322	334
Comprehensive income attributable to noncontrolling interests	25	54	26	71
Comprehensive Income (Loss) Attributable to Parent	78	92	296	263
SOUTHERN Co GAS
Net income	(29)	46	347	294
Qualifying hedges:
Changes in fair value, net of tax	(3)	0	(6)	2
Reclassification adjustment for amounts included in net income, net of tax	0	0	0	2
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	0	6	(1)	5
Total other comprehensive income (loss)	(3)	6	(7)	9
Comprehensive Income (Loss)	$ (32)	$ 52	$ 340	$ 303