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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Nov. 30, 2017 | Jun. 30, 2023 USD ($) Hospital State EndoscopyCenter SurgeryCenter | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) Hospital State EndoscopyCenter SurgeryCenter | Jun. 30, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of owned and operated hospitals | Hospital |  | 182 |  | 182 |
Number of freestanding surgery centers | SurgeryCenter |  | 126 |  | 126 |
Number of freestanding endoscopy centers | EndoscopyCenter |  | 22 |  | 22 |
Number of facilities locations | State |  | 20 |  | 20 |
General and administrative expense |  | $ 73 | $ 77 | $ 147 | $ 154
Charity care amount |  | 3,558 | 3,617 | 7,153 | 7,075
Estimated costs of charity care |  | $ 377 | $ 401 | $ 751 | $ 792
Inpatient Services [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  |  |  | Our performance obligations for inpatient services are generally satisfied over periods that average approximately five days, and revenues are recognized based on charges incurred in relation to total expected charges |
Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of income of federal poverty level eligible for charity care | 400.00% |  |  |  |
Maximum [Member] | Outpatient Services [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  |  |  | Our performance obligations for outpatient services are generally satisfied over a period of less than one day |

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