Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents, at Carrying Value	$ 891	$ 1,391
Short-term Investments	1,733	0
Accounts receivable:
Trade, net	447	384
Due from affiliates	0	1
Income taxes receivable	26	43
Inventories	159	155
Prepaid expenses	21	17
Other current assets:
Notes receivable	0	498
Derivatives Assets, Current	172	694
Other	5	11
Total current assets	3,454	3,194
Oil and gas properties, using the successful efforts method of accounting:
Proved properties	18,049	16,631
Unproved properties	486	169
Accumulated depletion, depreciation and amortization	(7,866)	(6,778)
Total property, plant and equipment	10,669	10,022
Long-term Investments	319	0
Goodwill	272	272
Property, Plant and Equipment, Net	1,514	1,523
Other assets:
Derivative Assets, Noncurrent	8	64
Other, net	89	79
Assets, Total	16,325	15,154
Accounts payable:
Trade	685	798
Due to affiliates	98	85
Interest payable	39	65
Income taxes payable	0	2
Current portion of long-term debt	485	448
Other current liabilities:
Derivative Liabilities, Current	7	0
Other	63	64
Total current liabilities	1,377	1,462
Long-term Debt, Excluding Current Maturities	2,726	3,207
Derivative Liabilities, Noncurrent	20	1
Deferred income taxes	1,437	1,776
Other liabilities	334	333
Stockholders' equity:
Common stock, $.01 par value	2	2
Additional paid-in capital	8,867	6,267
Treasury stock at cost	(217)	(199)
Retained earnings	1,772	2,298
Total equity attributable to common stockholders	10,424	8,368
Noncontrolling interests in consolidating subsidiaries	7	7
Total equity	10,431	8,375
Commitments and contingencies
Liabilities and Stockholders' Equity, Total	$ 16,325	$ 15,154