CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 916	$ 1,423
Accounts receivable, net	428	363
Derivative assets	130	51
Other current assets	35	35
Total current assets	1,509	1,872
Natural gas and oil properties, using the full cost method, including $1,817 million as of December 31, 2017 and $2,105 million as of December 31, 2016 excluded from amortization	23,890	22,653
Gathering systems	1,315	1,299
Other	564	537
Less: Accumulated depreciation, depletion and amortization	(19,997)	(19,534)
Total property and equipment, net	5,772	4,955
Other long-term assets	240	249
TOTAL ASSETS	7,521	7,076
Current liabilities:
Short-term debt		41
Accounts payable	533	473
Taxes payable	62	59
Interest payable	70	74
Dividends payable	27	27
Derivative liabilities	64	355
Other current liabilities	24	35
Total current liabilities	780	1,064
Long-term debt	4,391	4,612
Pension and other postretirement liabilities	58	49
Other long-term liabilities	313	434
Total long-term liabilities	4,762	5,095
Commitments and contingencies (see Note 8)
Equity:
Common stock, $0.01 par value; 1,250,000,000 shares authorized; issued 512,134,311 shares as of December 31, 2017 and 495,248,369 as of December 31, 2016	5	5
Preferred stock, $0.01 par value, 10,000,000 shares authorized, 6.25% Series B Mandatory Convertible, $1,000 per share liquidation preference, 1,725,000 shares issued and outstanding as of December 31, 2017 and 2016, converted to common stock in January 2018
Additional paid-in capital	4,698	4,677
Accumulated deficit	(2,679)	(3,725)
Accumulated other comprehensive loss	(44)	(39)
Common stock in treasury, 31,269 shares as of December 31, 2017 and 2016	(1)	(1)
Total equity	1,979	917
TOTAL LIABILITIES AND EQUITY	$ 7,521	$ 7,076