Debt instrument, maturity year.

No definition available.

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

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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

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

- Definition

Percentage of outstanding notes funded using cash on hand.

+ References

No definition available.

+ Details

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

- Definition

Amount of short-term and long-term debt and lease obligation.

+ References

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ 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

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

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Balance Type:	credit
Period Type:	instant

- Definition

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

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- 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.

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+ Details

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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

+ 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.

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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

- Definition

The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of increase (decrease) of the credit facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Long-Term Debt - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 12, 2025	May 09, 2025	May 31, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Aug. 25, 2025	Jun. 05, 2024
Debt Instrument [Line Items]
Debt and lease obligations				$ 10,605,000,000		$ 10,605,000,000		$ 11,452,000,000
Pre-tax gain (loss) from early extinguishment of debt				(33,000,000)	$ 0	105,000,000	$ 25,000,000
Interest paid on borrowings				214,000,000	$ 202,000,000	622,000,000	562,000,000
Asset Based Loan Facility
Debt Instrument [Line Items]
Debt and lease obligations				0		0		$ 341,000,000
Line of credit facility, excess availability				806,000,000		806,000,000
Line of credit outstanding amount				0		0
Letters of credit reduced during period						32,000,000
Asset Based Loan Facility \| ABL Facility Customary Covenants
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				95,000,000		$ 95,000,000
Debt instrument variable interest rate						10.00%
Asset Based Loan Facility \| Letter of Credit
Debt Instrument [Line Items]
Line of credit outstanding amount				$ 34,000,000		$ 34,000,000
Senior Secured Notes at 10.750% Due 2033 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, offering date		May 09, 2025
Debt instrument, interest rate, stated percentage		10.75%		10.75%		10.75%		10.75%
Description of debt redemption						CHS is entitled, at its option, to redeem all or a portion of the 10¾% Senior Secured Notes due 2033 at any time prior to June 15, 2030, upon not less than 10 nor more than 60 days’ notice, at a price equal to 100% of the principal amount of the 10¾% Senior Secured Notes due 2033 redeemed plus accrued and unpaid interest, if any, plus a “make-whole” premium, as described in the indenture governing the 10¾% Senior Secured Notes due 2033. CHS may redeem up to 35% of the aggregate principal amount of the 10¾% Senior Secured Notes due 2033 at any time prior to June 15, 2030 using the net proceeds from certain equity offerings at a redemption price of 103.000% of the principal amount of the 10¾% Senior Secured Notes due 2033 redeemed, plus accrued and unpaid interest, if any. At any time and from time to time on or after June 15, 2030, CHS may redeem the 10¾% Senior Secured Notes due 2033 in whole or in part, upon not less than 10 nor more than 60 days’ prior written notice at a redemption price equal to the percentage of principal amount set forth below plus accrued and unpaid interest, if any, on the 10¾% Senior Secured Notes due 2033 redeemed, to, but excluding, the applicable date of redemption, if redeemed during the twelve-month period beginning on June 15 of the years
Minimum period notice for redemption of debt		10 days
Maximum period notice for redemption of debt		60 days
Redemption price percentage		103.00%
Debt instrument, maturity year						2033		2033
Debt intrument, issuance price		103.00%
Debt and lease obligations				$ 700,000,000		$ 700,000,000
Line of credit facility, maximum borrowing capacity		$ 700,000,000
Senior Secured Notes at 10.750% Due 2033 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		6.875%
Senior Secured Notes at 10.750% Due 2033 \| Price Equal to 100% of Principal Amount \| Senior Secured Notes
Debt Instrument [Line Items]
Minimum period notice for redemption of debt		10 days
Maximum period notice for redemption of debt		60 days
Percentage of principal amount of debt to be redeemed		100.00%
Senior Secured Notes at 10.750% Due 2033 \| Redemption Price of 103.000% of Principal Amount \| Senior Secured Notes
Debt Instrument [Line Items]
Percentage of principal amount of debt to be redeemed		35.00%
Senior Secured Notes at 9.750% Due 2034 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, offering date	Aug. 12, 2025
Debt instrument, interest rate, stated percentage	9.75%			9.75%		9.75%		9.75%
Debt instrument, maturity year						2034		2034
Debt and lease obligations				$ 1,790,000,000		$ 1,790,000,000
Line of credit facility, maximum borrowing capacity	$ 1,790,000,000
Senior Secured Notes at 9.750% Due 2034 \| Senior Secured Notes \| At Any Time Prior to August 15, 2028
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	9.75%
Redemption price percentage	109.75%
Debt intrument, issuance price	109.75%
Senior Secured Notes at 9.750% Due 2034 \| Senior Secured Notes \| Any Time Prior to August 15, 2028, But Not More Than Once During Each 12 Month Period
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	9.75%
Redemption price percentage	103.00%
Debt intrument, issuance price	103.00%
Senior Secured Notes at 9.750% Due 2034 \| Senior Secured Notes \| At Any Time and From Time to Time On or After August 15, 2028
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	9.75%
Senior Secured Notes at 9.750% Due 2034 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Pre-tax gain (loss) from early extinguishment of debt				(33,000,000)		105,000,000	26,000,000
After-tax gain (loss) from extinguishment of debt				$ (26,000,000)		$ 113,000,000	$ 27,000,000
Senior Secured Notes at 9.750% Due 2034 \| Price Equal to 100% of Principal Amount \| Senior Secured Notes \| At Any Time Prior to August 15, 2028
Debt Instrument [Line Items]
Minimum period notice for redemption of debt	10 days
Maximum period notice for redemption of debt	60 days
Percentage of principal amount of debt to be redeemed	100.00%
Senior Secured Notes at 9.750% Due 2034 \| Price Equal to 100% of Principal Amount \| Senior Secured Notes \| At Any Time and From Time to Time On or After August 15, 2028
Debt Instrument [Line Items]
Minimum period notice for redemption of debt	10 days
Maximum period notice for redemption of debt	60 days
Senior Secured Notes at 9.750% Due 2034 \| Redemption Price of 103.000% of Principal Amount \| Senior Secured Notes \| At Any Time Prior to August 15, 2028
Debt Instrument [Line Items]
Percentage of principal amount of debt to be redeemed	40.00%
Senior Secured Notes at 9.750% Due 2034 \| Redemption Price of 103.000% of Principal Amount \| Senior Secured Notes \| Any Time Prior to August 15, 2028, But Not More Than Once During Each 12 Month Period
Debt Instrument [Line Items]
Percentage of principal amount of debt to be redeemed	10.00%
6.875% Senior Unsecured Notes due 2028 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Percentage of outstanding notes funded using cash on hand			93.00%
Debt instrument aggregate principal amount			$ 584,000,000
Line of credit outstanding amount			$ 42,000,000
Senior Secured Notes at 8%, Due 2027 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		8.00%		8.00%		8.00%		8.00%
Debt instrument, maturity year						2027		2027
Debt and lease obligations								$ 700,000,000
Senior Secured Notes 5.250%, Due 2030 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage				5.25%		5.25%		5.25%
Debt instrument, maturity year						2030		2030
Debt and lease obligations				$ 1,535,000,000		$ 1,535,000,000		$ 1,535,000,000
Senior Secured Notes at 10.875%, Due 2032 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt and lease obligations				$ 2,225,000,000		$ 2,225,000,000		$ 2,225,000,000
Senior Secured Notes at 5.625% due 2027 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.625%			5.625%		5.625%		5.625%	5.625%
Percentage of principal amount of debt to be redeemed	99.00%
Debt instrument, maturity year						2027		2027
Debt and lease obligations				$ 14,000,000		$ 14,000,000		$ 1,757,000,000
Debt redeemed	$ 1,743,000,000
Senior Secured Notes at 5.625% due 2027 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Line of credit outstanding amount									$ 14,000,000
Senior Secured Notes at 10.875%, Due 2032 \| Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage				10.875%		10.875%		10.875%
Debt instrument, maturity year						2032		2032
Second Amendment and Restatement Agreement to Amended and Restated Asset-Based Loan Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										$ 1,000,000,000
Second Amendment and Restatement Agreement to Amended and Restated Asset-Based Loan Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										$ 200,000,000