Supplementary Financial Information for Oil and Gas Producing Activities (Tables)

12 Months Ended

Dec. 31, 2013

Supplementary Financial Information for Oil and Gas Producing Activities

Schedule of results of operations from oil and gas producing activities

	2013		2012		2011
Results of Operations
Revenues	$	5,762	$	7,121	$	12,878
Production and operating costs		1,920		1,891		2,269
Depreciation and depletion		955		1,291		1,402
Results of operations before income taxes		2,887		3,939		9,207
Income tax expense		736		1,044		2,664
Results of operations (excluding corporate overhead and interest costs)	$	2,151	$	2,895	$	6,543
Costs Incurred
Development costs incurred	$	58	$	81	$	927
Exploration costs		—		—		—
Capitalized asset retirement costs		—		—	$	3
Property acquisition costs		—		—		—
Capitalized Costs
Natural gas properties—proved	$	18,359	$	18,301	$	18,220
Less: accumulated depreciation and depletion		8,256		7,294		5,997
Net capitalized costs for natural gas properties	$	10,103	$	11,007	$	12,223

Summary of changes in proved reserves

	Natural Gas (BCF) 2013			Natural Gas Liquids (MMBBLS) 2013			Natural Gas (BCF) 2012			Natural Gas Liquids (MMBBLS) 2012			Natural Gas (BCF) 2011			Natural Gas Liquids (MMBBLS) 2011
Proved reserves—beginning of year		8.3			1.1			10.3			1.5			12.3			1.2
Revisions of previous estimates		—			0.1			(0.8	)		(0.3	)		(0.8	)		0.5
Extensions and discoveries		—			—			—			—			—			—
Production		(0.7	)		(0.1	)		(1.2	)		(0.1	)		(1.2	)		(0.2	)
Proved reserves—end of year		7.6			1.1			8.3			1.1			10.3			1.5
Proved developed reserves—end of year		7.6			1.1			8.3			1.1			10.3			1.5

Schedule of standardized measure of discounted future net cash flows

	2013			2012			2011
Future estimated gross revenues	$	61,873		$	57,882		$	120,920
Future estimated production and development costs		(24,276	)		(23,905	)		(32,138	)
Future estimated net revenues		37,597			33,977			88,782
Future estimated income tax expense		(10,286	)		(9,193	)		(25,627	)
Future estimated net cash flows		27,311			24,784			63,155
10% annual discount for estimated timing of cash flows		(13,733	)		(12,020	)		(33,207	)
Standardized measure of discounted future estimated net cash flows	$	13,578		$	12,764		$	29,948

Schedule of changes in standardized measure of discounted future net cash flows

	2013			2012			2011
Standardized measure—beginning of year	$	12,764		$	29,948		$	26,456
Net change in sales prices and production costs		4,227			(7,067	)		2,403
Sales of natural gas produced, net of production costs		(4,046	)		(5,230	)		(7,805	)
Net change due to changes in quantity estimates		430			(5,863	)		4,086
Previously estimated development costs incurred		56			116			925
Net change in income taxes		(380	)		7,419			(1,609	)
Accretion of discount		1,486			1,603			3,211
Timing of production of reserves and other		(959	)		(8,162	)		2,281
Standardized measure—end of year	$	13,578		$	12,764		$	29,948