INVESTMENTS AND RELATED-PARTY TRANSACTIONS (Details) - USD ($) shares in Millions, $ in Millions		1 Months Ended		3 Months Ended		12 Months Ended
		Jul. 31, 2022	Nov. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity Method Investments
Equity method investment amounts						$ 3,176	$ 2,938
Dividends received as return on investment						643	652	$ 678
Cumulative undistributed earnings						475	242
Excess of investments in equity investees over the underlying equity in net assets						640
Excess of investments in equity investees over the underlying equity in net assets, which represents goodwill						373
Equity-method investments financial information summarized by Income Statement line item
Revenues and other income						37,095	26,314	16,261
Costs and expenses						24,088	23,362	31,913
Equity-method investments financial information summarized by Balance Sheet line item
Current assets						8,886	10,211
Current liabilities						7,757	8,324
Long-term debt	[1]					19,670	29,431
Other non-current liabilities						15,097	16,954
Stockholders’ equity						30,085	20,327	18,573	$ 34,232
RELATED-PARTY TRANSACTIONS
Sales						337	261	301
Purchases						948	773	1,112
Services						1,006	942	1,101
Advances and amounts due from related parties						40	57	62
Amounts due to related parties						306	280	296
Equity Method Investment, Nonconsolidated Investee
Equity-method investments financial information summarized by Income Statement line item
Revenues and other income						6,342	6,252	5,455
Costs and expenses						4,514	4,569	5,455
Net income						1,828	1,683	0
Equity-method investments financial information summarized by Balance Sheet line item
Current assets						3,482	3,387	1,419
Non-current assets						15,282	19,341	18,693
Current liabilities						1,342	1,976	1,549
Long-term debt						9,512	9,464	7,860
Other non-current liabilities						1,289	1,187	866
Stockholders’ equity						$ 6,621	$ 10,101	9,837
Disposal Group, Disposed of by Sale, Not Discontinued Operations | WES
Equity Method Investments
Number of shares sold (in shares)		10.0				14.0	14.0
Net proceeds from sale of equity investment		$ 250				$ 250	$ 250
Gain on sale		$ 62				102
Goodwill impairment loss					$ 1,200
Impairment of equity method investment				$ 2,700
WES
Equity Method Investments
Equity method investment amounts						$ 2,006
Equity method investment ownership percentage						51.70%
Goodwill impairment loss								$ 1,200
Impairment of equity method investment				$ 2,700
RELATED-PARTY TRANSACTIONS
Sales to related party (as a percent)						42.00%	58.00%	70.00%
Purchases from related party (as a percent)						24.00%	27.00%	59.00%
OxyChem Ingleside Facility
Equity Method Investments
Equity method investment amounts						$ 566
Equity method investment ownership percentage						50.00%
OLCV - related
Equity Method Investments
Equity method investment amounts						$ 416
Other
Equity Method Investments
Equity method investment amounts						188
Dolphin Energy Limited
Equity Method Investments
Equity method investment amounts						$ 213
Equity method investment ownership percentage						24.50%
Dividends received as return on investment			$ 110
Excess distributions			$ 450
Ingleside Ethylene LLC
RELATED-PARTY TRANSACTIONS
Purchases from related party (as a percent)						64.00%	70.00%	41.00%

[1] Included $546 million and $504 million of finance lease liabilities as of December 31, 2022 and 2021, respectively.