Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 134	$ 70	$ 232	$ (27)
Other comprehensive income (loss), net of income taxes:
Net change in fair value of interest rate swaps, net of tax	8		(1)	9
Net change in fair value of available-for-sale securities, net of tax	(2)	3	(1)	3
Amortization and recognition of unrecognized pension cost components, net of tax			1
Other comprehensive income (loss)	6	3	(1)	12
Comprehensive income (loss)	140	73	231	(15)
Less: Comprehensive income attributable to noncontrolling interests	23	28	43	43
Comprehensive income (loss) attributable to Community Health Systems, Inc. stockholders	$ 117	$ 45	$ 188	$ (58)