Long-Term Debt - Schedule of Early Redemption Prices on 4.750% Senior Notes due 2031 (Details) - Senior Secured Notes - Senior Secured Notes at 4.750% due 2031	Feb. 09, 2021
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument redemption price percentage	102.375%
Debt Instrument, Redemption Period, Start Date	Feb. 15, 2026
Debt Instrument, Redemption Period, End Date	Feb. 14, 2027
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument redemption price percentage	101.583%
Debt Instrument, Redemption Period, Start Date	Feb. 15, 2027
Debt Instrument, Redemption Period, End Date	Feb. 14, 2028
Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt instrument redemption price percentage	100.792%
Debt Instrument, Redemption Period, Start Date	Feb. 15, 2028
Debt Instrument, Redemption Period, End Date	Feb. 14, 2029
Debt Instrument, Redemption, Period Four
Debt Instrument [Line Items]
Debt instrument redemption price percentage	100.00%
Debt Instrument, Redemption Period, Start Date	Feb. 15, 2029
Debt Instrument, Redemption Period, End Date	Feb. 14, 2031

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

End date of debt instrument redemption period, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodEndDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Start date of debt instrument redemption period, in YYYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodStartDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cyh_SeniorSecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=cyh_SeniorSecuredNotesAtFourPointSevenFiveDue2031Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: