Cover Page - shares shares in Thousands	6 Months Ended
	Jun. 30, 2024	Jul. 24, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-7293
Entity Registrant Name	TENET HEALTHCARE CORP
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	95-2557091
Entity Address, Address Line One	14201 Dallas Parkway
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75254
City Area Code	469
Local Phone Number	893-2200
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		95,822
Entity Central Index Key	0000070318
Current Fiscal Year End Date	--12-31
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common stock, $0.05 par value | New York Stock Exchange
Document Information [Line Items]
Title of 12(b) Security	Common stock, $0.05 par value
Trading Symbol	THC
Security Exchange Name	NYSE
6.875% Senior Notes due 2031 | New York Stock Exchange
Document Information [Line Items]
Title of 12(b) Security	6.875% Senior Notes due 2031
Trading Symbol	THC31
Security Exchange Name	NYSE