Consolidated Condensed Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOW FROM OPERATING ACTIVITIES
Net income / (loss)	$ (168)	$ 469
Adjustments to reconcile net income / (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	504	582
Deferred income tax expense / (benefit)	(115)	178
Other noncash charges to income	54	22
Dry hole expenses	7	32
Changes in operating assets and liabilities, net	(50)	(47)
Net cash provided by operating activities	232	1,236
CASH FLOW FROM INVESTING ACTIVITIES
Capital investments	(228)	(1,003)
Changes in capital investment accruals	(203)	(1)
Acquisitions and other	(9)	(35)
Net cash used by investing activities	(440)	(1,039)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	1,164
Repayments of revolving credit facility	(934)
Proceeds from issuance of common stock	5
Cash dividends paid	(4)
Distributions to Occidental, net		(197)
Net cash provided / (used) by financing activities	231	$ (197)
Increase in cash and cash equivalents	23
Cash and cash equivalents - beginning of period	14
Cash and cash equivalents - end of period	$ 37