STOCK-BASED INCENTIVE PLANS -ESTIMATED LEVEL OF TSRIs & STOCK OPTIONS (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
TSRIs
Grant-date assumptions used in the Monte Carlo simulation models
Risk-free interest rate (as a percent)	1.70%	0.20%	1.40%
Volatility factor (as a percent)	80.00%	75.00%	26.00%
Expected life (years)	2 years 10 months 20 days	2 years 10 months 17 days	3 years
Grant-date fair value of underlying Occidental common stock (in dollars per share)	$ 42.98	$ 25.39	$ 41.60
Options
Grant-date assumptions used in the Monte Carlo simulation models
Risk-free interest rate (as a percent)	1.87%	0.70%	1.40%
Volatility factor (as a percent)	58.00%	55.00%	25.00%
Expected life (years)	6 years 7 days	6 years	6 years
Dividend yield	0.09%	0.16%	7.60%
Exercise price (in dollars per share)	$ 42.98	$ 25.39	$ 41.60
Grant-date fair value of underlying Occidental common stock (in dollars per share)	$ 23.39	$ 12.72	$ 3.19