Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 180	$ 631
Restricted cash	69	74
Accounts receivable:
Trade, net	566	1,032
Due from affiliates	0	3
Income taxes receivable	21	7
Inventories	170	205
Derivatives	72	32
Investment in affiliate	85	187
Other	32	20
Total current assets	1,195	2,191
Oil and gas properties, using the successful efforts method of accounting:
Proved properties	23,217	22,444
Unproved properties	577	584
Accumulated depletion, depreciation and amortization	(9,349)	(8,583)
Total oil and gas properties, net	14,445	14,445
Other property and equipment, net	1,622	1,632
Operating lease right-of-use assets	216	280
Goodwill	261	261
Derivatives	3	0
Other assets	164	258
Total Assets	17,906	19,067
Accounts payable:
Trade	787	1,221
Due to affiliates	65	190
Interest payable	26	53
Income taxes payable	4	3
Less current portion of long-term debt	139	450
Derivatives	88	12
Operating leases	110	136
Other	365	431
Total current liabilities	1,584	2,496
Long-term debt	2,054	1,839
Derivatives	27	8
Deferred income taxes	1,403	1,389
Operating leases	124	170
Other liabilities	974	1,046
Equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 175,378,954 and 175,057,889 shares issued as of June 30, 2020 and December 31, 2019, respectively	2	2
Additional paid-in capital	9,285	9,161
Treasury stock at cost: 11,102,784 and 9,511,248 shares as of June 30, 2020 and December 31, 2019, respectively	(1,240)	(1,069)
Retained earnings	3,693	4,025
Total equity	11,740	12,119
Commitments and contingencies
Total Liabilities and Equity	$ 17,906	$ 19,067
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000