Consolidated Condensed Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 15,432	$ 22,659
Accounts receivable
Allowance for doubtful accounts	(13,558)	(15,048)
Accounts receivable, net of allowance for doubtful accounts of $13,558 at June 30, 2011, and $15,048 at December 31, 2010	164,031	286,849
Inventories
Storage gas inventory	34,632	36,706
Materials and supplies	27,038	19,045
Liquified natural gas in storage	3,693	3,551
Regulatory asset	32,563	28,286
Income tax receivable	5,264	44,489
Deferred income taxes	49,930	32,732
Prepayments and other	10,353	11,966
Total current assets	342,936	486,283
Property, Plant and Equipment
Oil and gas properties, successful efforts method	4,461,460	4,080,779
Less accumulated depreciation, depletion and amortization	1,256,178	1,161,635
Oil and gas properties, net	3,205,282	2,919,144
Utility plant	1,322,695	1,292,611
Less accumulated depreciation	523,051	509,989
Utility plant, net	799,644	782,622
Other property, net	23,117	17,461
Total property, plant and equipment, net	4,028,043	3,719,227
Other Assets
Regulatory asset	89,465	105,365
Pension and other postretirement assets	11,947	13,907
Long-term derivative instruments	1,002	0
Deferred charges and other	38,001	38,778
Total other assets	140,415	158,050
TOTAL ASSETS	4,511,394	4,363,560
Current Liabilities
Long-term debt due within one year	5,000	5,000
Notes payable to banks	302,000	305,000
Accounts payable	263,142	268,214
Accrued taxes	42,783	52,845
Customers' deposits	21,471	20,459
Amounts due customers	10,407	20,161
Accrued wages and benefits	27,985	25,203
Regulatory liability	65,024	75,703
Royalty payable	23,228	19,221
Other	23,275	26,805
Total current liabilities	784,315	818,611
Long-term debt	404,980	405,254
Deferred Credits and Other Liabilities
Asset retirement obligation	102,120	97,415
Pension and other postretirement liabilities	34,248	36,551
Regulatory liability	92,951	110,447
Long-term derivative instruments	128,505	112,936
Deferred income taxes	697,540	615,084
Other	9,297	13,219
Total deferred credits and other liabilities	1,064,661	985,652
Commitments and Contingencies
Shareholders' Equity
Preferred stock, cumulative $0.01 par value	0	0
Common shareholders' equity
Common stock, $0.01 par value	750	748
Premium on capital stock	480,559	468,934
Capital surplus	2,802	2,802
Retained earnings	2,018,318	1,880,183
Accumulated other comprehensive loss, net of tax
Unrealized loss on hedges, net	(90,738)	(43,667)
Pension and postretirement plans	(29,365)	(30,730)
Deferred compensation plan	3,468	3,288
Treasury stock, at cost; 3,036,997 shares at June 30, 2011, and 3,024,847 shares at December 31, 2010	(128,356)	(127,515)
Total shareholders' equity	2,257,438	2,154,043
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,511,394	4,363,560
Alabama Gas Corporation
Current Assets
Cash and cash equivalents	13,739	16,910
Accounts receivable
Gas	52,084	136,800
Other	11,268	10,229
Affiliated companies	2,140	698
Allowance for doubtful accounts	(12,700)	(14,200)
Inventories
Storage gas inventory	34,632	36,706
Materials and supplies	4,160	4,147
Liquified natural gas in storage	3,693	3,551
Regulatory asset	32,563	28,286
Income tax receivable	2,077	10,315
Deferred income taxes	25,759	27,302
Prepayments and other	1,771	4,223
Total current assets	171,186	264,967
Property, Plant and Equipment
Utility plant	1,322,695	1,292,611
Less accumulated depreciation	523,051	509,989
Utility plant, net	799,644	782,622
Other property, net	43	43
Other Assets
Regulatory asset	89,465	105,365
Pension and other postretirement assets	7,800	9,201
Deferred charges and other	4,833	5,399
Total other assets	102,098	119,965
TOTAL ASSETS	1,072,971	1,167,597
Current Liabilities
Long-term debt due within one year	5,000	5,000
Notes payable to banks	0	70,000
Accounts payable	71,504	83,515
Accrued taxes	35,872	48,476
Customers' deposits	21,471	20,459
Amounts due customers	10,407	20,161
Accrued wages and benefits	10,345	11,851
Regulatory liability	65,024	75,703
Other	10,154	11,822
Total current liabilities	229,777	346,987
Long-term debt	200,500	200,793
Deferred Credits and Other Liabilities
Pension and other postretirement liabilities	4,190	4,733
Regulatory liability	92,951	110,447
Long-term derivative instruments	17,657	32,461
Deferred income taxes	170,004	141,780
Other	834	3,077
Total deferred credits and other liabilities	285,636	292,498
Commitments and Contingencies
Shareholders' Equity
Preferred stock, cumulative $0.01 par value	0	0
Common shareholders' equity
Common stock, $0.01 par value	20	20
Premium on capital stock	31,682	31,682
Capital surplus	2,802	2,802
Retained earnings	322,554	292,815
Accumulated other comprehensive loss, net of tax
Total shareholders' equity	357,058	327,319
Total capitalization	557,558	528,112
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,072,971	$ 1,167,597