Consolidated Condensed Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating Activities
Net income	$ 245,192	$ 210,557
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	199,559	185,025
Accretion expense	5,066	4,568
Deferred income taxes	120,656	95,005
Bad debt expense	3,197	2,969
Exploratory expense	10,773	53,642
Change in derivative fair value	(59,581)	278
Gain on sale of assets	(5,991)	(529)
Other, net	5,913	(4,849)
Net change in:
Accounts receivable	48,585	51,577
Inventories	(15,493)	(8,498)
Accounts payable	(26,877)	(15,449)
Amounts due customers including gas supply pass-through	7,342	22,076
Income tax receivable	39,347	(48,284)
Pension and other postretirement benefit contributions	(5,025)	(40,988)
Other current assets and liabilities	21,286	10,839
Net cash provided by operating activities	593,949	517,939
Investing Activities
Additions to property, plant and equipment	(634,427)	(309,849)
Acquisitions, net of cash acquired	(106,578)	(208,667)
Proceeds from sale of assets	7,401	607
Purchase of short-term investments	0	(154,880)
Sale of short-term investments	0	79,938
Other, net	(946)	(1,395)
Net cash used in investing activities	(734,550)	(594,246)
Financing Activities
Payment of dividends on common stock	(29,188)	(28,030)
Issuance of common stock	6,221	594
Issuance of long-term debt	399,952	0
Payment of long-term debt	(5,407)	(707)
Net change in short-term debt	(230,000)	42,000
Tax benefit on stock compensation	922	720
Debt issuance costs	(3,162)	0
Net cash provided by financing activities	139,338	14,577
Net change in cash and cash equivalents	(1,263)	(61,730)
Cash and cash equivalents at beginning of period	22,659	75,844
Cash and Cash Equivalents at End of Period	21,396	14,114
Alabama Gas Corporation
Operating Activities
Net income	35,344	36,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	29,606	34,380
Deferred income taxes	16,626	21,889
Bad debt expense	3,184	2,979
Other, net	227	(16,188)
Net change in:
Accounts receivable	41,085	40,921
Inventories	(6,173)	(4,782)
Accounts payable	(22,155)	(16,381)
Amounts due customers including gas supply pass-through	7,342	22,076
Income tax receivable	6,807	(7,990)
Pension and other postretirement benefit contributions	(2,108)	(25,185)
Other current assets and liabilities	(8,474)	8,917
Net cash provided by operating activities	101,311	97,422
Investing Activities
Additions to property, plant and equipment	(57,424)	(74,710)
Other, net	177	(3,807)
Net cash used in investing activities	(57,247)	(78,517)
Financing Activities
Payment of dividends on common stock	(29,183)	(37,367)
Payment of long-term debt	(5,407)	(707)
Net decreases in advances from affiliates	370	(24,962)
Net change in short-term debt	(20,000)	42,000
Net cash provided by financing activities	(54,220)	(21,036)
Net change in cash and cash equivalents	(10,156)	(2,131)
Cash and cash equivalents at beginning of period	16,910	9,460
Cash and Cash Equivalents at End of Period	$ 6,754	$ 7,329