CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 32	$ 27
Restricted cash	1	0
Accounts receivable
Customer, net of allowance of less than $1 in 2019 and 2018	127	164
Other, net of allowance of $1 in 2019 and 2018	16	66
Materials and supplies	42	22
Derivative instruments	9	101
Other	27	5
Total current assets	254	385
Property, plant and equipment, at cost
Oil and natural gas properties	7,388	7,344
Other property, plant and equipment	73
Other property, plant and equipment		81
Total property, plant and equipment, at cost	7,461
Total property, plant and equipment, at cost		7,425
Less accumulated depreciation, depletion and amortization	4,026
Less accumulated depreciation, depletion and amortization		3,651
Total property, plant and equipment, net	3,435
Total property, plant and equipment, net		3,774
Other assets
Derivative instruments	0	13
Unamortized debt issue costs	2	8
Operating lease assets and other	19	1
Total other assets	21	22
Total assets	3,710	4,181
Current liabilities
Current portion of long-term debt	1,815	58
Debtor-in-possession financing	148	0
Owner and royalties payable	72	144
Accounts payable and accrued expenses	139	105
Accrued interest	40	70
Accrued legal and other reserves	12	47
Other current liabilities	22	16
Total current liabilities	2,248	440
Long-term debt, net of debt issue costs	0	4,285
Other long-term liabilities
Asset retirement obligations	43	39
Lease obligations and other	20	16
Total non-current liabilities	63	4,340
Liabilities subject to compromise	2,932	0
Commitments and contingencies (Note 9)
Stockholders’ equity
Preferred stock, $0.01 par value; 50 million shares authorized; no shares issued or outstanding	0	0
Treasury stock (at cost); one million and less than one million shares at December 31, 2019 and December 31, 2018	(1)	(1)
Additional paid-in capital	3,545	3,536
Accumulated deficit	(5,080)	(4,137)
Total stockholders’ equity	(1,533)	(599)
Total liabilities and equity	3,710	4,181
Class A Stock
Stockholders’ equity
Common stock	3	3
Class B Stock
Stockholders’ equity
Common stock	$ 0	$ 0