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v3.23.1

Segment and Geographic Information - Schedule of Geographic Distributions of Revenues, Equity in Earnings of Affiliates, Adjusted Segment EBITDA, Depreciation and Amortization and Assets (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 15,591 | $ 14,945 |
Equity in losses (earnings) of affiliates | 18 | (11) |
Adjusted segment EBITDA | 3,172 | 2,944 |
Depreciation and amortization | 756 | 732 |
Interest expense | 479 | 408 |
Losses (gains) on sales of facilities | 15 | (10) |
Income before income taxes | 1,922 | 1,814 |
Assets | 52,711 |  | $ 52,438
National Group [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 4,616 | 4,202 |
Equity in losses (earnings) of affiliates | (1) | 0 |
Adjusted segment EBITDA | 1,149 | 955 |
Depreciation and amortization | 207 | 197 |
Assets | 12,058 |  | 11,793
Atlantic Group [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 5,109 | 4,686 |
Equity in losses (earnings) of affiliates | (1) | 0 |
Adjusted segment EBITDA | 1,086 | 850 |
Depreciation and amortization | 239 | 222 |
Assets | 15,383 |  | 15,092
American Group [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 5,199 | 5,206 |
Equity in losses (earnings) of affiliates | (12) | (9) |
Adjusted segment EBITDA | 1,133 | 1,316 |
Depreciation and amortization | 237 | 232 |
Assets | 17,742 |  | 17,934
Corporate and Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 667 | 851 |
Equity in losses (earnings) of affiliates | (32) | (2) |
Adjusted segment EBITDA | (196) | (177) |
Depreciation and amortization | 73 | $ 81 |
Assets | $ 7,528 |  | $ 7,619

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

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

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hca_NationalGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hca_AtlanticGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hca_AmericanGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |