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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value Disclosures [Abstract] |  |  |
Realized gains |  |  | $ 1
Realized losses | $ (2) | $ (2) | $ (1)

X
- Definition Available for sale securities gains realized gross. + References No definition available. + Details
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Namespace Prefix: | cyh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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