Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income (loss)	$ 2,059	$ 936
Qualifying hedges:
Changes in fair value, net of tax	(28)	47
Reclassification adjustment for amounts included in net income, net of tax	28	(19)
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	0	2
Total other comprehensive income (loss)	0	30
Comprehensive Income (Loss)	2,059	966
Less:
Dividends on preferred stock of subsidiaries	4	4
Comprehensive loss attributable to noncontrolling interests	(29)	(6)
Comprehensive Income (Loss) Attributable to Parent	2,084	968
ALABAMA POWER CO
Net income (loss)	221	229
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1	1
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	1	1
Comprehensive Income (Loss)	222	230
Less:
Dividends on preferred stock of subsidiaries	4	4
GEORGIA POWER CO
Net income (loss)	311	352
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1	1
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	1	1
Comprehensive Income (Loss)	312	353
MISSISSIPPI POWER CO
Net income (loss)	37	(7)
Qualifying hedges:
Changes in fair value, net of tax	0	(1)
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	0	(1)
Comprehensive Income (Loss)	37	(8)
SOUTHERN POWER CO
Net income (loss)	27	115
Qualifying hedges:
Changes in fair value, net of tax	(29)	48
Reclassification adjustment for amounts included in net income, net of tax	25	(24)
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	(4)	24
Comprehensive Income (Loss)	23	139
Less:
Comprehensive loss attributable to noncontrolling interests	(29)	(6)
Comprehensive Income (Loss) Attributable to Parent	52	145
SOUTHERN Co GAS
Net income (loss)	270	279
Qualifying hedges:
Changes in fair value, net of tax	0	1
Reclassification adjustment for amounts included in net income, net of tax	0	2
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	(1)	(1)
Total other comprehensive income (loss)	(1)	2
Comprehensive Income (Loss)	$ 269	$ 281