Condensed Financial Information of Parent - Condensed Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Income Statements Captions [Line Items]
Net operating revenues	$ 12,211	$ 12,368	$ 11,789
Operating costs and expenses:
Salaries and benefits	5,330	5,242	5,411
Supplies	1,975	2,042	1,963
Other operating expenses	3,336	2,958	2,957
Pandemic relief funds	(173)	(148)	(601)
Depreciation and amortization	534	540	558
Impairment and (gain) loss on sale of businesses, net	71	24	48
Total operating costs and expenses	11,390	10,966	10,663
Income from operations	821	1,402	1,126
Interest expense, net	858	885	1,031
Gain (loss) on early extinguishment of debt	253	(79)	317
Income before income taxes	349	499	422
Provision for (benefit from) income taxes	170	131	(185)
Net income	179	368	607
Less: Net income attributable to noncontrolling interests	133	138	96
Net income attributable to Community Health Systems, Inc. stockholders	46	230	511
Parent Company
Operating costs and expenses:
Equity in earnings of unconsolidated affiliates	(46)	(230)	(511)
Income before income taxes	46	230	511
Net income	46	230	511
Net income attributable to Community Health Systems, Inc. stockholders	$ 46	$ 230	$ 511