Consolidated and Combined Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOW FROM OPERATING ACTIVITIES
Net income / (loss)	$ (1,434)	$ 869	$ 699
Adjustments to reconcile net income/ (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	1,198	1,144	926
Asset impairments	3,402		29
Deferred income tax expense / (benefit)	(1,152)	260	603
Other noncash charges to income	113	29	40
Dry hole expenses	101	72	128
Changes in operating assets and liabilities. net
(Increase) decrease in trade receivables, net	146	(8)	20
(Increase) decrease in inventories	2	8	(23)
(Increase) decrease in other current assets	(133)	2	(49)
Increase (decrease) in accounts payable and other current liabilities	128	100	(150)
Net cash provided by operating activities	2,371	2,476	2,223
CASH FLOW FROM INVESTING ACTIVITIES
Capital investments	(2,020)	(1,669)	(2,331)
Acquisitions and other	(292)	(44)	(424)
Net cash used by investing activities	(2,312)	(1,713)	(2,755)
CASH FLOW FROM FINANCING ACTIVITIES
(Distributions to) contributions from Occidental, net	(335)	(763)	532
Dividends to Occidental	(6,000)
Issuance of senior notes	5,000
Issuance of term loan	1,000
Proceeds from revolving credit facility	515
Repayments of revolving credit facility	(155)
Debt issuance costs	(70)
Net cash (used) provided by financing activities	(45)	(763)	532
Increase in cash and cash equivalents	14
Cash and cash equivalents - beginning of year	0
Cash and cash equivalents - end of year	$ 14	$ 0