CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Operating Revenues:
Gas sales	$ 1,941,361		$ 2,079,725		$ 1,858,727
Gas marketing	591,528		714,123		615,913
Oil sales	8,427		9,085		13,111
Gas gathering	173,727		149,973		122,912
Total Operating Revenues	2,715,043		2,952,906		2,610,663
Operating Costs and Expenses:
Gas purchases - midstream services	592,466		709,091		611,161
Operating expenses	244,735		240,944		191,771
General and administrative expenses	175,147		158,041		145,563
Depreciation, depletion and amortization	810,953		704,511		590,332
Impairment of natural gas and oil properties	1,939,734
Taxes, other than income taxes	67,584		65,518		50,608
Total operating costs and expenses	3,830,619		1,878,105		1,589,435
Operating income (loss)	(1,115,576)	[1]	1,074,801		1,021,228
Interest Expense:
Interest on debt	93,296		65,421		57,144
Other interest charges	4,454		4,306		1,935
Interest capitalized	(62,093)		(45,652)		(32,916)
Total Interest Expense	35,657	[2]	24,075	[2]	26,163	[2]
Other Income (Loss), Net	1,030		264		427
Income (Loss) Before Income Taxes	(1,150,203)		1,050,990		995,492
Provision (Benefit) for Income Taxes:
Current	18,689		4,198		11,939
Deferred	(461,828)		409,023		379,720
Total provision for income taxes	(443,139)	[2]	413,221	[2]	391,659	[2]
Net Income (Loss)	(707,064)		637,769		603,833
Net Loss Attributable to Noncontrolling Interest					(285)
Net Income (Loss) Attributable to Southwestern Energy	$ (707,064)		$ 637,769		$ 604,118
Earnings (Loss) Per Share:
Basic	$ (2.03)		$ 1.84		$ 1.75
Diluted	$ (2.03)		$ 1.82		$ 1.73
Weighted Average Common Shares Outstanding:
Basic	348,610,503		347,205,316		345,581,568
Effect Of:
Stock Options			2,475,053		3,512,241
Restricted Stock Awards			241,044		216,857
Diluted	348,610,503		349,921,413		349,310,666

[1] The operating loss for the E&P segment for the twelve months ended December 31, 2012 includes a $1,939.7 million non-cash ceiling test impairment of our natural gas and oil properties.

[2] Interest income, interest expense and the provision (benefit) for income taxes by segment are an allocation of corporate amounts as cash equivalents, debt and income tax expense allocated as they are incurred at the corporate level.