Debt instrument, maturity year.

No definition available.

Name:	cyh_DebtInstrumentMaturityYear
Namespace Prefix:	cyh_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Extinguishment of debt amount through tender offer.

+ References

No definition available.

+ Details

Name:	cyh_ExtinguishmentOfDebtAmountThroughTenderOffer
Namespace Prefix:	cyh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum number of days notice needed to redeem the senior notes at the redemption price plus accrued and unpaid interest.

+ References

No definition available.

+ Details

Name:	cyh_MaximumPeriodNoticeForRedemptionsOfDebt
Namespace Prefix:	cyh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum number of days notice needed to redeem the senior notes at the redemption price plus accrued and unpaid interest.

+ References

No definition available.

+ Details

Name:	cyh_MinimumPeriodNoticeForRedemptionsOfDebt
Namespace Prefix:	cyh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Tender offer commencement date.

+ References

No definition available.

+ Details

Name:	cyh_TenderOfferCommencementDate
Namespace Prefix:	cyh_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Tender offer expiration date.

+ References

No definition available.

+ Details

Name:	cyh_TenderOfferExpirationDate
Namespace Prefix:	cyh_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Name Accounting Standards Codification
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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

Date the debt instrument was offered for sale, in YYYY-MM-DD format.

+ References

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-Name Accounting Standards Codification
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+ Details

Name:	us-gaap_DebtInstrumentOfferingDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of debt redemption features under terms of the debt agreement.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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

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

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=cyh_JuniorPrioritySecuredNotesAt8.125PercentDue2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cyh_SeniorNotesAt6875Due2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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

Long-Term Debt - 8.125% Junior-Priority Secured Notes Due 2024 - Additional Information (Details) - USD ($)					12 Months Ended
	May 19, 2021	Nov. 19, 2019	Jun. 22, 2018	Jan. 27, 2014	Dec. 31, 2021	Dec. 31, 2020
Junior-Priority Secured Notes at 8.125% Due 2024
Debt Instrument [Line Items]
Debt instrument aggregate principal amount			$ 276,000,000
Senior Notes at 6.875%, Due 2022
Debt Instrument [Line Items]
Extinguishment of debt amount		$ 2,400,000,000				$ 34,000,000
Junior-Priority Secured Notes \| Junior-Priority Secured Notes at 8.125% Due 2024
Debt Instrument [Line Items]
Debt instrument, offering date	May 19, 2021				Jun. 22, 2018
Extinguishment of debt amount					$ 1,000,000
Debt instrument stated interest rate	6.125%		8.125%
Debt instrument redemption description					plus a “make-whole” premium, as described in the indenture governing the 8⅛% Junior-Priority Secured Notes due 2024.
Minimum period notice for redemption of debt			15 days
Maximum period notice for redemption of debt			60 days
Extinguishment of debt amount via tender offer					$ 6,000,000
Tender offer commencement date					Oct. 30, 2020
Tender offer expiration date					Nov. 30, 2020
Debt instrument, maturity year	2030
Debt instrument, frequency of periodic payment					On May 19, 2021, CHS redeemed the remaining principal amount of the 8⅛% Junior-Priority Secured Notes due 2024 using proceeds from the issuance of the 6⅛% Junior-Priority Secured Notes due 2030 on May 19, 2021.
Junior-Priority Secured Notes \| Junior-Priority Secured Notes at 8.125% Due 2024 \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument redemption price percentage			108.125%
Maximum principal redeemable using proceeds from a public equity offering, as a percentage of principal amount			40.00%
Junior Priority Secured Notes Two \| Junior-Priority Secured Notes at 8.125% Due 2024
Debt Instrument [Line Items]
Debt instrument aggregate principal amount			$ 1,355,000,000
Debt instrument redemption price percentage					100.00%
Junior Priority Secured Notes One \| Junior-Priority Secured Notes at 8.125% Due 2024
Debt Instrument [Line Items]
Debt instrument aggregate principal amount			1,079,000,000.000
Senior Notes \| Senior Notes at 6.875%, Due 2022
Debt Instrument [Line Items]
Debt instrument, offering date						Jan. 27, 2014
Debt instrument aggregate principal amount				$ 3,000,000,000.0
Extinguishment of debt amount			$ 368,000,000
Debt instrument stated interest rate				6.875%	6.875%	6.875%
Extinguishment of debt amount via tender offer						$ 72,000,000
Tender offer commencement date						Oct. 30, 2020
Tender offer expiration date						Nov. 30, 2020
Debt instrument, maturity year					2022	2022
Senior Notes \| Senior Notes at 6.875%, Due 2022 \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Minimum period notice for redemption of debt				30 days
Maximum period notice for redemption of debt				60 days