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, 2024 USD ($) Hospital EndoscopyCenter SurgeryCenter State	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Hospital EndoscopyCenter SurgeryCenter State	Jun. 30, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of owned and operated hospitals | Hospital		188		188
Number of freestanding surgery centers | SurgeryCenter		123		123
Number of freestanding endoscopy centers | EndoscopyCenter		23		23
Number of facilities locations | State		20		20
General and administrative expense		$ 100	$ 82	$ 190	$ 164
Charity care amount		4,112	3,558	8,090	7,153
Estimated costs of charity care		$ 415	$ 377	$ 817	$ 751
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