Consolidated Condensed Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 21,396	$ 22,659
Accounts receivable
Allowance for doubtful accounts	(13,596)	(15,048)
Accounts receivable, net of allowance for doubtful accounts of $13,596 at September 30, 2011, and $15,048 at December 31, 2010	214,553	286,849
Inventories
Storage gas inventory	42,856	36,706
Materials and supplies	28,424	19,045
Liquified natural gas in storage	3,515	3,551
Regulatory asset	44,525	28,286
Income tax receivable	5,142	44,489
Deferred income taxes	0	32,732
Prepayments and other	17,190	11,966
Total current assets	377,601	486,283
Property, Plant and Equipment
Oil and gas properties, successful efforts method	4,725,629	4,080,779
Less accumulated depreciation, depletion and amortization	1,316,643	1,161,635
Oil and gas properties, net	3,408,986	2,919,144
Utility plant	1,339,872	1,292,611
Less accumulated depreciation	528,313	509,989
Utility plant, net	811,559	782,622
Other property, net	23,423	17,461
Total property, plant and equipment, net	4,243,968	3,719,227
Other Assets
Regulatory asset	109,244	105,365
Pension and other postretirement assets	0	13,907
Long-term derivative instruments	101,175	0
Deferred charges and other	43,454	38,778
Total other assets	253,873	158,050
TOTAL ASSETS	4,875,442	4,363,560
Current Liabilities
Long-term debt due within one year	1,000	5,000
Notes payable to banks	75,000	305,000
Accounts payable	212,722	268,214
Accrued taxes	50,451	52,845
Customers' deposits	21,701	20,459
Amounts due customers	20,482	20,161
Accrued wages and benefits	30,150	25,203
Regulatory liability	51,849	75,703
Royalty payable	23,810	19,221
Deferred income taxes	2,004	0
Other	27,129	26,805
Total current liabilities	516,298	818,611
Long-term debt	803,829	405,254
Deferred Credits and Other Liabilities
Asset retirement obligation	104,711	97,415
Pension and other postretirement liabilities	71,025	36,551
Regulatory liability	87,579	110,447
Long-term derivative instruments	13,331	112,936
Deferred income taxes	785,826	615,084
Other	4,942	13,219
Total deferred credits and other liabilities	1,067,414	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	481,616	468,934
Capital surplus	2,802	2,802
Retained earnings	2,096,187	1,880,183
Accumulated other comprehensive loss, net of tax
Unrealized gain (loss) on hedges, net	71,253	(43,667)
Pension and postretirement plans	(39,803)	(30,730)
Deferred compensation plan	3,458	3,288
Treasury stock, at cost; 3,034,684 shares at September 30, 2011, and 3,024,847 shares at December 31, 2010	(128,362)	(127,515)
Total shareholders' equity	2,487,901	2,154,043
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,875,442	4,363,560
Alabama Gas Corporation
Current Assets
Cash and cash equivalents	6,754	16,910
Accounts receivable
Gas	45,246	136,800
Other	6,766	10,229
Affiliated companies	0	698
Allowance for doubtful accounts	(12,800)	(14,200)
Inventories
Storage gas inventory	42,856	36,706
Materials and supplies	4,206	4,147
Liquified natural gas in storage	3,515	3,551
Regulatory asset	44,525	28,286
Income tax receivable	3,508	10,315
Deferred income taxes	25,792	27,302
Prepayments and other	6,202	4,223
Total current assets	176,570	264,967
Property, Plant and Equipment
Utility plant	1,339,872	1,292,611
Less accumulated depreciation	528,313	509,989
Utility plant, net	811,559	782,622
Other property, net	43	43
Other Assets
Regulatory asset	109,244	105,365
Pension and other postretirement assets	0	9,201
Deferred charges and other	9,772	5,399
Total other assets	119,016	119,965
TOTAL ASSETS	1,107,188	1,167,597
Current Liabilities
Long-term debt due within one year	0	5,000
Notes payable to banks	50,000	70,000
Accounts payable	76,621	83,515
Affiliated Companies	370	0
Accrued taxes	29,006	48,476
Customers' deposits	21,701	20,459
Amounts due customers	20,482	20,161
Accrued wages and benefits	9,275	11,851
Regulatory liability	51,849	75,703
Other	9,150	11,822
Total current liabilities	268,454	346,987
Long-term debt	200,386	200,793
Deferred Credits and Other Liabilities
Pension and other postretirement liabilities	29,628	4,733
Regulatory liability	87,579	110,447
Long-term derivative instruments	13,050	32,461
Deferred income taxes	173,877	141,780
Other	734	3,077
Total deferred credits and other liabilities	304,868	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	298,976	292,815
Accumulated other comprehensive loss, net of tax
Total shareholders' equity	333,480	327,319
Total capitalization	533,866	528,112
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,107,188	$ 1,167,597