CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 159	$ 72
Other comprehensive income:
Amortization of net actuarial loss included in other non-operating expense, net	2	3
Unrealized gains (losses) on debt securities held as available-for-sale	1	0
Other comprehensive income before income taxes	3	3
Income tax expense related to items of other comprehensive income	(2)	(1)
Total other comprehensive income, net of tax	1	2
Comprehensive net income	160	74
Less: Comprehensive income attributable to noncontrolling interests	66	84
Comprehensive income available (loss attributable) to Tenet Healthcare Corporation common shareholders	$ 94	$ (10)