Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOW FROM OPERATING ACTIVITIES
Net income (loss)	$ 2,322	$ (14,831)	$ (522)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Discontinued operations, net	468	1,298	15
Depreciation, depletion and amortization of assets	8,447	8,097	6,140
Deferred income tax provision (benefit)	46	(2,517)	(1,027)
Other noncash charges to income	229	419	958
Asset impairments and other charges	304	11,002	1,328
(Gain) loss on sales of equity investments and other assets, net	(192)	1,666	(622)
Undistributed earnings from affiliates	(70)	(61)	(50)
Dry hole expense	125	47	89
Changes in operating assets and liabilities:
(Increase) decrease in receivables	(2,086)	2,062	401
(Increase) decrease in inventories	(86)	(484)	78
(Increase) decrease in other current assets	(119)	350	170
Increase (decrease) in accounts payable and accrued liabilities	865	(3,228)	358
Increase in current domestic and foreign income taxes	0	22	20
Operating cash flow from continuing operations	10,253	3,842	7,336
Operating cash flow from discontinued operations, net of taxes	181	113	39
Net cash provided by operating activities	10,434	3,955	7,375
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(2,870)	(2,535)	(6,367)
Change in capital accrual	97	(519)	(249)
Purchase of businesses and assets, net	(431)	(114)	(28,088)
Proceeds from sale of assets and equity investments, net	1,624	2,281	6,143
Equity investments and other, net	406	109	(291)
Investing cash flow from continuing operations	(1,174)	(778)	(28,852)
Investing cash flow from discontinued operations	(79)	(41)	(175)
Net cash used by investing activities	(1,253)	(819)	(29,027)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from issuance of common and preferred stock	31	134	10,028
Purchases of treasury stock	(8)	(12)	(237)
Cash dividends paid on common and preferred stock	(839)	(1,845)	(2,624)
Distributions to noncontrolling interest	0	0	(257)
Payment of liabilities associated with the sale of future royalties	0	(386)	(28)
Financing portion of net cash received (paid) for derivative instruments	(834)	(362)	120
Other financing, net	(80)	(57)	137
Financing cash flow from continuing operations	(8,564)	(4,508)	22,196
Financing cash flow from discontinued operations	(8)	(8)	(3)
Net cash provided (used) by financing activities	(8,572)	(4,516)	22,193
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	609	(1,380)	541
Cash, cash equivalents, restricted cash and restricted cash equivalents — beginning of year	2,194	3,574	3,033
Cash, cash equivalents, restricted cash and restricted cash equivalents — end of year	2,803	2,194	3,574
Occidental
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt, net	0	6,936	21,557
Payments of long-term debt, net - Occidental	(6,834)	(8,916)	(6,959)
WES
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt, net	$ 0	$ 0	$ 459