Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 936	$ 665
Qualifying hedges:
Changes in fair value, net of tax	47	(9)
Reclassification adjustment for amounts included in net income, net of tax	19	1
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	2	1
Total other comprehensive income (loss)	30	(9)
Comprehensive Income	966	656
Less:
Dividends on preferred and preference stock of subsidiaries	4	11
Comprehensive loss attributable to noncontrolling interests	(6)	(4)
Comprehensive Income (Loss) Attributable to Parent	968	649
ALABAMA POWER CO
Net income	229	178
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	230	179
Less:
Dividends on preferred and preference stock of subsidiaries	4	4
GEORGIA POWER CO
Net income	352	264
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	353	265
Less:
Dividends on preferred and preference stock of subsidiaries	0	4
GULF POWER CO
Net income	42	20
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	42	19
Less:
Dividends on preferred and preference stock of subsidiaries	0	2
MISSISSIPPI POWER CO
Net income	(7)	(20)
Qualifying hedges:
Changes in fair value, net of tax	(1)	1
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	(1)	1
Comprehensive Income	(8)	(19)
Less:
Dividends on preferred and preference stock of subsidiaries	0	0
SOUTHERN POWER CO
Net income	115	66
Qualifying hedges:
Changes in fair value, net of tax	48	(8)
Reclassification adjustment for amounts included in net income, net of tax	24	4
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	24	(12)
Comprehensive Income	139	54
Less:
Comprehensive loss attributable to noncontrolling interests	(6)	(4)
Comprehensive Income (Loss) Attributable to Parent	145	58
SOUTHERN Co GAS
Net income	279	239
Qualifying hedges:
Changes in fair value, net of tax	1	(1)
Reclassification adjustment for amounts included in net income, net of tax	(2)	0
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	(1)	(1)
Total other comprehensive income (loss)	2	(2)
Comprehensive Income	$ 281	$ 237