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Fair Value - Gross Realized Gains and Losses and Investment Income on Available-for-Sale Debt Securities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Realized losses	$ (1)	$ (2)	$ (2)

X

- Definition

Available for sale securities losses realized gross.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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