Consolidated Condensed Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Revenues
Oil and gas operations	$ 385,543	$ 399,468	$ 640,537	$ 623,425
Natural gas distribution	104,514	70,887	342,199	265,374
Total operating revenues	490,057	470,355	982,736	888,799
Operating Expenses
Cost of gas	47,571	13,669	143,013	73,255
Operations and maintenance	136,204	112,713	282,041	223,274
Depreciation, depletion and amortization	132,285	101,991	247,580	196,525
Income taxes
Deferred			57,442	55,060
Asset impairment	0	0	0	21,545
Taxes, other than income taxes	25,650	19,523	54,422	45,758
Accretion expense	2,043	1,861	4,040	3,674
Total operating expenses	343,753	249,757	731,096	564,031
Operating Income	146,304	220,598	251,640	324,768
Other Income (Expense)
Interest expense	(17,306)	(15,835)	(34,060)	(31,260)
Other income	748	659	2,506	2,217
Other expense	(128)	(582)	(197)	(221)
Total other expense	(16,686)	(15,758)	(31,751)	(29,264)
Interest Expense
Income Before Income Taxes	129,618	204,840	219,889	295,504
Income tax expense	46,551	73,553	80,130	106,811
Net Income	83,067	131,287	139,759	188,693
Diluted Earnings Per Average Common Share (in dollars per share)	$ 1.15	$ 1.82	$ 1.93	$ 2.61
Basic Earnings Per Average Common Share (in dollars per share)	$ 1.15	$ 1.82	$ 1.94	$ 2.62
Dividends Per Common Share (in dollars per share)	$ 0.145	$ 0.14	$ 0.290	$ 0.280
Diluted Average Common Shares Outstanding	72,419	72,330	72,329	72,336
Basic Average Common Shares Outstanding	72,167	72,117	72,155	72,110
Alabama Gas Corporation
Operating Revenues
Natural gas distribution	104,514	70,887	342,199	265,374
Operating Expenses
Cost of gas	47,571	13,669	143,013	73,255
Operations and maintenance	36,005	36,169	74,022	70,235
Depreciation, depletion and amortization	10,873	10,533	21,602	20,979
Income taxes
Current	(1,778)	(2,631)	24,143	22,809
Deferred	1,335	2,969	4,355	6,167
Taxes, other than income taxes	7,846	6,068	22,050	17,897
Total operating expenses	101,852	66,777	289,185	211,342
Operating Income	2,662	4,110	53,014	54,032
Other Income (Expense)
Interest expense	(3,833)	(3,959)	(7,863)	(8,021)
Allowance for funds used during construction	227	131	446	265
Other income	361	340	1,111	1,138
Other expense	(121)	(296)	(190)	(170)
Total other expense	467	175	1,367	1,233
Interest Expense
Interest on long-term debt	3,377	3,423	6,755	6,848
Other interest expense	456	536	1,108	1,173
Net Income	$ (704)	$ 326	$ 46,518	$ 47,244