CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Operating Revenues:
Gas sales	$ 463,768		$ 467,929
Gas marketing	148,051		171,098
Oil sales	2,528		2,727
Gas gathering	42,122		34,581
Total Operating Revenues	656,469		676,335
Operating Costs and Expenses:
Gas purchases - Midstream Services	146,676		170,230
Operating expenses	60,958		56,798
General and administrative expenses	48,826		37,117
Depreciation, depletion and amortization	193,627		163,447
Taxes, other than income taxes	20,422		16,092
Total operating costs and expenses	470,509		443,684
Operating Income	185,960		232,651
Interest Expense:
Interest on debt	19,735		15,044
Other interest charges	991		1,511
Interest capitalized	(13,388)		(9,119)
Total Interest Expense	7,338	[1]	7,436	[1]
Other Income (loss), Net	(200)	[1]	374	[1]
Income before income taxes	178,422		225,589
Provision for Income Taxes:
Current	168		100
Deferred	70,550		88,880
Provision for income taxes	70,718	[1]	88,980	[1]
Net Income	$ 107,704		$ 136,609
Earnings Per Share:
Net income attributable to Southwestern Energy stockholders - Basic	$ 0.31		$ 0.39
Net income attributable to Southwestern Energy stockholders - Diluted	$ 0.31		$ 0.39
Weighted Average Common Shares Outstanding:
Basic	348,000,074		346,833,906
Diluted	349,990,725		349,697,327

[1] (1) Interest income, interest expense and the provision for income taxes by segment are allocated as they are incurred at the corporate level.