CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (LOSS)
Net income	$ 176	$ 78	$ 76
Other comprehensive income (loss):
Adjustments for defined benefit plans	(73)	3	(258)
Amortization of net actuarial loss included in net periodic benefit costs	12	12	4
Unrealized gains (losses) on securities held as available-for-sale	2	(2)	3
Foreign currency translation adjustments	(53)	5
Other comprehensive income (loss) before income taxes	(112)	18	(251)
Income tax benefit (expense) related to items of other comprehensive income (loss)	18		93
Total other comprehensive income (loss), net of tax	(94)	18	(158)
Comprehensive net income (loss)	82	96	(82)
Less: Comprehensive income attributable to noncontrolling interests	368	218	64
Comprehensive loss attributable to Tenet Healthcare Corporation common shareholders	$ (286)	$ (122)	$ (146)