Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating Revenues:
Retail revenues	$ 3,748	$ 3,714	$ 7,124	$ 7,256
Wholesale revenues	446	448	842	915
Other electric revenues	166	162	348	325
Other revenues	99	13	137	24
Total operating revenues	4,459	4,337	8,451	8,520
Operating Expenses:
Fuel	1,023	1,200	1,934	2,412
Purchased power	189	171	354	315
Cost of sales	58	0	77	0
Other operations and maintenance	1,099	1,100	2,206	2,222
Depreciation and amortization	569	500	1,110	987
Taxes other than income taxes	255	245	511	497
Estimated loss on Kemper IGCC	81	23	134	32
Total operating expenses	3,274	3,239	6,326	6,465
Operating Income (Loss)	1,185	1,098	2,125	2,055
Other Income and (Expense):
Allowance for equity funds used during construction	45	39	98	102
Interest expense, net of amounts capitalized	(293)	(180)	(539)	(393)
Other income (expense), net	(29)	(12)	(57)	(19)
Total other income and (expense)	(277)	(153)	(498)	(310)
Earnings (Loss) Before Income Taxes	908	945	1,627	1,745
Income taxes (benefit)	272	302	494	576
Net Income (Loss)	636	643	1,133	1,169
Dividends on preferred and preference stock of subsidiaries	12	14	23	31
Less: Net income attributable to noncontrolling interests	12	0	13	0
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	$ 612	$ 629	$ 1,097	$ 1,138
Earnings per share (EPS) -
Basic EPS (in dollars per share)	$ 0.65	$ 0.69	$ 1.19	$ 1.25
Diluted EPS (in dollars per share)	$ 0.65	$ 0.69	$ 1.18	$ 1.25
Average number of shares of common stock outstanding (in millions)
Basic (in shares)	934	909	925	910
Diluted (in shares)	940	912	931	914
Cash dividends paid per share of common stock (in dollars per share)	$ 0.56	$ 0.5425	$ 1.1025	$ 1.0675
Alabama Power [Member]
Operating Revenues:
Retail revenues	$ 1,316	$ 1,326	$ 2,510	$ 2,594
Wholesale revenues, non-affiliates	67	57	130	123
Wholesale revenues, affiliates	9	20	31	35
Other revenues	52	52	105	104
Total operating revenues	1,444	1,455	2,776	2,856
Operating Expenses:
Fuel	295	343	564	653
Purchased power, non-affiliates	40	45	76	86
Purchased power, affiliates	55	49	88	103
Other operations and maintenance	355	370	747	768
Depreciation and amortization	175	160	347	318
Taxes other than income taxes	94	90	191	184
Total operating expenses	1,014	1,057	2,013	2,112
Operating Income (Loss)	430	398	763	744
Other Income and (Expense):
Allowance for equity funds used during construction	6	14	16	29
Interest expense, net of amounts capitalized	(74)	(69)	(147)	(134)
Other income (expense), net	(4)	(14)	(11)	(18)
Total other income and (expense)	(72)	(69)	(142)	(123)
Earnings (Loss) Before Income Taxes	358	329	621	621
Income taxes (benefit)	142	122	245	235
Net Income (Loss)	216	207	376	386
Dividends on preferred and preference stock of subsidiaries	5	7	9	17
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	211	200	367	369
Georgia Power [Member]
Operating Revenues:
Retail revenues	1,907	1,872	3,624	3,686
Wholesale revenues, non-affiliates	40	50	82	118
Wholesale revenues, affiliates	10	4	15	12
Other revenues	94	90	202	178
Total operating revenues	2,051	2,016	3,923	3,994
Operating Expenses:
Fuel	439	503	815	1,029
Purchased power, non-affiliates	92	78	175	138
Purchased power, affiliates	111	115	250	263
Other operations and maintenance	439	467	896	943
Depreciation and amortization	214	202	425	418
Taxes other than income taxes	100	97	197	195
Total operating expenses	1,395	1,462	2,758	2,986
Operating Income (Loss)	656	554	1,165	1,008
Other Income and (Expense):
Allowance for equity funds used during construction			24	10
Interest expense, net of amounts capitalized	(99)	(93)	(193)	(182)
Other income (expense), net	8	1	26	16
Total other income and (expense)	(91)	(92)	(167)	(166)
Earnings (Loss) Before Income Taxes	565	462	998	842
Income taxes (benefit)	213	180	373	320
Net Income (Loss)	352	282	625	522
Dividends on preferred and preference stock of subsidiaries	5	5	9	9
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	347	277	616	513
Gulf Power [Member]
Operating Revenues:
Retail revenues	319	327	602	620
Wholesale revenues, non-affiliates	15	27	31	52
Wholesale revenues, affiliates	15	13	36	35
Other revenues	16	17	31	34
Total operating revenues	365	384	700	741
Operating Expenses:
Fuel	107	122	201	232
Purchased power, non-affiliates	32	25	62	50
Purchased power, affiliates	4	9	5	17
Other operations and maintenance	77	91	155	185
Depreciation and amortization	42	40	80	60
Taxes other than income taxes	29	28	58	56
Total operating expenses	291	315	561	600
Operating Income (Loss)	74	69	139	141
Other Income and (Expense):
Allowance for equity funds used during construction	0	3	0	8
Interest expense, net of amounts capitalized	(12)	(12)	(25)	(26)
Other income (expense), net	(1)	(1)	(2)	(2)
Total other income and (expense)	(13)	(10)	(27)	(20)
Earnings (Loss) Before Income Taxes	61	59	112	121
Income taxes (benefit)	24	21	44	44
Net Income (Loss)	37	38	68	77
Dividends on preferred and preference stock of subsidiaries	3	3	5	5
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	34	35	63	72
Mississippi Power [Member]
Operating Revenues:
Retail revenues	206	189	389	357
Wholesale revenues, non-affiliates	60	63	120	141
Wholesale revenues, affiliates	7	18	16	45
Other revenues	4	5	8	9
Total operating revenues	277	275	533	552
Operating Expenses:
Fuel	81	115	157	229
Purchased power, non-affiliates	1	2	1	3
Purchased power, affiliates	4	2	9	4
Other operations and maintenance	68	68	136	144
Depreciation and amortization	45	30	84	57
Taxes other than income taxes	25	23	50	48
Estimated loss on Kemper IGCC	81	23	134	32
Total operating expenses	305	263	571	517
Operating Income (Loss)	(28)	12	(38)	35
Other Income and (Expense):
Allowance for equity funds used during construction	30	25	59	53
Interest expense, net of amounts capitalized	(15)	30	(31)	19
Other income (expense), net	(1)	(1)	(3)	(2)
Total other income and (expense)	14	54	25	70
Earnings (Loss) Before Income Taxes	(14)	66	(13)	105
Income taxes (benefit)	(17)	16	(27)	20
Net Income (Loss)	3	50	14	85
Dividends on preferred and preference stock of subsidiaries	1	1	1	1
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	2	49	13	84
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	264	250	480	481
Wholesale revenues, affiliates	107	85	204	199
Other revenues	2	2	4	4
Total operating revenues	373	337	688	684
Operating Expenses:
Fuel	96	105	187	243
Purchased power, non-affiliates	21	18	35	34
Purchased power, affiliates	2	4	8	14
Other operations and maintenance	86	69	162	121
Depreciation and amortization	81	60	154	118
Taxes other than income taxes	6	6	13	12
Total operating expenses	292	262	559	542
Operating Income (Loss)	81	75	129	142
Other Income and (Expense):
Interest expense, net of amounts capitalized	(22)	(23)	(43)	(45)
Other income (expense), net	1	1	1	1
Total other income and (expense)	(21)	(22)	(42)	(44)
Earnings (Loss) Before Income Taxes	60	53	87	98
Income taxes (benefit)	(41)	1	(65)	13
Net Income (Loss)	101	52	152	85
Less: Net income attributable to noncontrolling interests	12	6	13	6
Net income attributable to Southern Power Company	$ 89	$ 46	$ 139	$ 79