Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents, at Carrying Value	$ 660	$ 1,118
Short-term Investments	1,539	1,441
Accounts receivable:
Trade, net	491	517
Due from affiliates	0	1
Income taxes receivable	1	3
Inventories	192	181
Other current assets:
Derivatives Assets, Current	156	14
Other	25	23
Total current assets	3,064	3,298
Oil and gas properties, using the successful efforts method of accounting:
Proved properties	18,983	18,566
Unproved properties	518	486
Accumulated depletion, depreciation and amortization	(8,505)	(8,211)
Total property, plant and equipment	10,996	10,841
Long-term Investments	187	420
Goodwill	270	272
Property, Plant and Equipment, Net	1,622	1,529
Other assets:
Derivative Assets, Noncurrent	29	0
Other, net	103	99
Assets, Total	16,271	16,459
Accounts payable:
Trade	881	741
Due to affiliates	63	134
Interest payable	59	68
Current portion of long-term debt	449	485
Other current liabilities:
Derivative Liabilities, Current	3	77
Other	103	61
Total current liabilities	1,558	1,566
Long-term Debt, Excluding Current Maturities	2,281	2,728
Derivative Liabilities, Noncurrent	1	7
Deferred income taxes	1,487	1,397
Other liabilities	342	350
Stockholders' equity:
Common stock, $.01 par value	2	2
Additional paid-in capital	8,937	8,892
Treasury stock at cost	(254)	(218)
Retained earnings	1,912	1,728
Total equity attributable to common stockholders	10,597	10,404
Noncontrolling interests in consolidating subsidiaries	5	7
Total equity	10,602	10,411
Commitments and contingencies
Liabilities and Equity, Total	$ 16,271	$ 16,459