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v3.23.2

Share Repurchase Transactions and Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Equity [Abstract] |
Foreign currency translation adjustments, income tax expense | $ 6

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- Definition Other comprehensive income foreign currency translation adjustment tax expense. + References No definition available. + Details
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Namespace Prefix: | hca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration