CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (104)	$ 133	$ 94
Other comprehensive income (loss):
Adjustments for defined benefit plans	68	(25)	(15)
Unrealized gains on securities held as available-for-sale	1	0	0
Reclassification adjustments for realized losses included in net income	0	0	0
Other comprehensive income (loss) before income taxes	69	(25)	(15)
Income tax benefit (expense) related to items of other comprehensive loss	(25)	9	6
Total other comprehensive income (loss), net of tax	44	(16)	(9)
Comprehensive income (loss)	(60)	117	85
Less: Preferred stock dividends	0	11	24
Less: Comprehensive income (loss) attributable to noncontrolling interests	30	(19)	12
Comprehensive income (loss) attributable to Tenet Healthcare Corporation common shareholders	$ (90)	$ 125	$ 49