Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 581	$ 1,025
Accounts receivable:
Trade, net	413	436
Due from affiliates	0	4
Income taxes receivable	0	23
Inventories	238	241
Prepaid expenses	19	15
Other current assets:
Notes receivable	497	0
Derivatives Assets, Current	632	578
Other	23	37
Total current assets	2,403	2,359
Oil and gas properties, using the successful efforts method of accounting:
Proved properties	16,799	15,662
Unproved properties	170	159
Accumulated depletion, depreciation and amortization	(6,407)	(5,431)
Total property, plant and equipment	10,562	10,390
Goodwill	272	272
Property, Plant and Equipment, Net	1,480	1,391
Other assets:
Investment in unconsolidated affiliate	0	239
Derivative Assets, Noncurrent	147	181
Other, net	101	94
Assets, Total	14,965	14,926
Accounts payable:
Trade	791	1,197
Due to affiliates	58	123
Interest payable	36	40
Income taxes payable	27	1
Deferred Tax Liabilities, Net, Current	172	161
Other current liabilities:
Derivative Liabilities, Current	2	3
Other	61	55
Total current liabilities	1,147	1,580
Long-term Debt, Excluding Current Maturities	2,675	2,665
Derivative Liabilities, Noncurrent	1	2
Deferred income taxes	1,925	1,803
Other liabilities	236	287
Stockholders' equity:
Common stock, $.01 par value	2	2
Additional paid-in capital	6,250	6,167
Treasury stock at cost	(199)	(171)
Retained earnings	2,921	2,583
Total equity attributable to common stockholders	8,974	8,581
Noncontrolling interests in consolidating subsidiaries	7	8
Total equity	$ 8,981	$ 8,589
Commitments and contingencies
Liabilities and Stockholders' Equity, Total	$ 14,965	$ 14,926