Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,001	$ 896
Short-term investments	722	1,213
Accounts receivable:
Trade, net	826	644
Due from affiliates	0	1
Income taxes receivable	7	7
Inventories	218	212
Assets held for sale	20	0
Derivatives	7	11
Other	23	23
Total current assets	2,824	3,007
Oil and gas properties, using the successful efforts method of accounting:
Proved properties	20,892	20,404
Unproved properties	568	558
Accumulated depletion, depreciation and amortization	(9,230)	(9,196)
Total property, plant and equipment	12,230	11,766
Long-term investments	93	66
Goodwill	269	270
Other property and equipment, net	1,799	1,762
Other assets, net	108	132
Total Assets	17,323	17,003
Accounts payable:
Trade	1,222	1,174
Due to affiliates	48	108
Interest payable	38	59
Income taxes payable	1	0
Current portion of long-term debt	449	449
Liabilities held for sale	6	0
Derivatives	333	232
Other	153	106
Total current liabilities	2,250	2,128
Long-term debt	2,284	2,283
Derivatives	54	23
Deferred income taxes	928	899
Other liabilities	405	391
Equity:
Common stock, $.01 par value	2	2
Additional paid-in capital	8,991	8,974
Treasury stock at cost	(294)	(249)
Retained earnings	2,698	2,547
Total equity attributable to common stockholders	11,397	11,274
Noncontrolling interests in consolidated subsidiaries	5	5
Total equity	11,402	11,279
Commitments and contingencies
Total Liabilities and Equity	$ 17,323	$ 17,003