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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Nov. 30, 2017 | Sep. 30, 2024 USD ($) Hospital State EndoscopyCenter SurgeryCenter | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) Hospital State EndoscopyCenter SurgeryCenter | Sep. 30, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of owned and operated hospitals | Hospital |  | 187 |  | 187 |
Number of freestanding surgery centers | SurgeryCenter |  | 125 |  | 125 |
Number of freestanding endoscopy centers | EndoscopyCenter |  | 23 |  | 23 |
Number of facilities locations | State |  | 20 |  | 20 |
General and administrative expense |  | $ 111 | $ 89 | $ 301 | $ 253
Charity care amount |  | 4,001 | 3,531 | 12,091 | 10,684
Estimated costs of charity care |  | $ 416 | $ 382 | $ 1,233 | $ 1,133
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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