EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Income Available to Common Shareholders (Numerator)
Net income available to Tenet Healthcare Corporation common shareholders for basic earnings per share	$ 611	$ 410	$ 915
Effect of dilutive stock options, restricted stock units, deferred compensation units, convertible instruments and dividends on preferred stock	(13)	8	0
Net income available to Tenet Healthcare Corporation common shareholders for diluted earnings per share	$ 598	$ 418	$ 915
Weighted Average Shares (Denominator)
Net income available/attributable to Tenet Healthcare Corporation common shareholders for basic earnings per share (in shares)	101,639	106,929	106,833
Effect of dilutive stock options, restricted stock units and deferred compensation units (in shares)	3,161	3,587	1,738
Net income available/attributable to Tenet Healthcare Corporation common shareholders for diluted earnings per share (in shares)	104,800	110,516	108,571
Per-Share Amount
Net income available/attributable to Tenet Healthcare Corporation common shareholders for basic earnings per share (in dollars per share)	$ 6.01	$ 3.83	$ 8.56
Effect of dilutive stock options, restricted stock units, and deferred compensation units (in dollars per share)	(0.30)	(0.05)	(0.13)
Net income available/attributable to Tenet Healthcare Corporation common shareholders for diluted earnings per share (in dollars per share)	$ 5.71	$ 3.78	$ 8.43