Contingencies - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended			6 Months Ended
	Nov. 30, 2018	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pending Litigation [Member] | Litigation Matters Where Negative Outcome Is Reasonably Possible [Member]
Loss Contingencies [Line Items]
Attorneys' fees and other costs incurred				$ 2,000,000	$ 1,000,000	$ 4,000,000
Pending Litigation [Member] | Litigation Matters Where Negative Outcome Is Reasonably Possible [Member] | Maximum
Loss Contingencies [Line Items]
Income on legal fees		$ 1,000,000
Class Action Shareholder Federal Securities Cases [Member]
Loss Contingencies [Line Items]
Judgment awarded			$ 53,000,000
Steadfast Insurance Company, et al v. Community Health Systems, Inc. [Member] | Pending Litigation [Member] | Litigation Matters For Which An Outcome Cannot Be Assessed [Member]
Loss Contingencies [Line Items]
Loss contingency damages sought value	$ 73,000,000