SEGMENTS - Schedule of Industry Segments and Eliminations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)
Segment Information
Number of operating segments | segment	3
Net sales	$ 7,225	$ 8,349
Income (loss) before income taxes	1,734	3,083
Income tax expense	(471)	1,793
NET INCOME	1,263	4,876
Gains on sales of assets, net	4	135
Mark-to-market derivative losses	0	(135)
Anadarko acquisition-related costs	0	65
Operating segments | Oil and gas
Segment Information
Net sales	5,325	6,075
Income (loss) before income taxes	1,640	2,898
Income tax expense	0	0
NET INCOME	1,640	2,898
Gains related to legal settlements	26
Operating segments | Oil and gas | Disposed of by sale, not discontinued operations | Permian Basin
Segment Information
Gains on sales of assets, net		125
Operating segments | Chemical
Segment Information
Net sales	1,405	1,684
Income (loss) before income taxes	472	671
Income tax expense	0	0
NET INCOME	472	671
Operating segments | Midstream and marketing
Segment Information
Net sales	751	882
Income (loss) before income taxes	2	(50)
Income tax expense	0	0
NET INCOME	2	(50)
Impairment of equity method investment	(26)
Corporate and eliminations
Segment Information
Net sales	(256)	(292)
Income (loss) before income taxes	(380)	(436)
Income tax expense	(471)	1,793
NET INCOME	$ (851)	1,357
Non-cash income tax benefit from reorganization		2,600
Mark to market gain (loss) on interest rate swaps		135
Anadarko acquisition-related costs		65
Corporate and eliminations | Midstream and marketing
Segment Information
Mark-to-market derivative losses		$ 198