Consolidated Condensed Balance Sheets - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 50	$ 12
Trade receivables, net	212	232
Inventories	57	58
Other current assets, net	90	123
Total current assets	409	425
PROPERTY, PLANT AND EQUIPMENT	20,963	20,915
Accumulated depreciation, depletion and amortization	(15,170)	(15,030)
Total property, plant and equipment	5,793	5,885
OTHER ASSETS	35	44
TOTAL ASSETS	6,237	6,354
CURRENT LIABILITIES
Current maturities of long-term debt	100	100
Accounts payable	238	219
Accrued liabilities	350	407
Total current liabilities	688	726
LONG-TERM DEBT - PRINCIPAL AMOUNT	5,021	5,168
DEFERRED GAIN AND ISSUANCE COSTS, NET	382	397
OTHER LONG-TERM LIABILITIES	593	620
EQUITY
Preferred stock (20 million shares authorized at $0.01 par value) no shares outstanding at March 31, 2017 and December 31, 2016
Common stock (200 million shares authorized at $0.01 par value) outstanding shares (March 31, 2017 - 42,592,983 and December 31, 2016 - 42,542,637)
Additional paid-in capital	4,867	4,861
Accumulated deficit	(5,351)	(5,404)
Accumulated other comprehensive loss	(11)	(14)
Total equity attributable to common stock	(495)	(557)
Noncontrolling interest	48
Total equity	(447)	(557)
TOTAL LIABILITIES AND EQUITY	$ 6,237	$ 6,354