Schedule of Disaggregates Revenue by Major Source (Parenthetical) (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Net revenues		$ 13,399,370		$ 12,642,117	$ 11,558,897
Acute Care Hospital Services
Disaggregation Of Revenue [Line Items]
Net revenues		7,646,749	[1]	7,108,254	6,337,304
Acute Care Hospital Services | CARES Act and Other Grant Revenue
Disaggregation Of Revenue [Line Items]
Net revenues					316,000
Behavioral Health Services
Disaggregation Of Revenue [Line Items]
Net revenues	[2]	$ 5,729,758		$ 5,503,644	5,208,722
Behavioral Health Services | CARES Act and Other Grant Revenue
Disaggregation Of Revenue [Line Items]
Net revenues					$ 97,000

[1] Included in our 2022 acute care hospital services operating segment income (loss) before allocation of corporate overhead and income taxes is a pre-tax $58 million provision for asset impairment charge to reduce the carrying value of real property assets.

[2] Includes net revenues generated from our behavioral health care facilities located in the U.K. amounting to approximately $685 million in 2022, $688 million in 2021 and $584 million in 2020. Total assets at our U.K. behavioral health care facilities were approximately $1.235 billion as of December 31, 2022, $1.351 billion as of December 31, 2021 and $1.334 billion as of December 31, 2020.