Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022		Dec. 31, 2021
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 3,962,624		$ 3,882,715
Goodwill acquired during the period	0		55,406
Goodwill divested during the period	0		0
Adjustments to goodwill	(53,168)	[1]	24,503	[2]
Goodwill, Ending Balance	3,909,456		3,962,624
Acute Care Services
Goodwill [Line Items]
Goodwill, Beginning Balance	515,936		447,021
Goodwill acquired during the period	0		55,406
Goodwill divested during the period	0		0
Adjustments to goodwill	690	[1]	13,509	[2]
Goodwill, Ending Balance	516,626		515,936
Behavioral Health Services
Goodwill [Line Items]
Goodwill, Beginning Balance	3,446,688		3,435,694
Goodwill acquired during the period	0		0
Goodwill divested during the period	0		0
Adjustments to goodwill	(53,858)	[1]	10,994	[2]
Goodwill, Ending Balance	$ 3,392,830		$ 3,446,688

[1] The changes in the Behavioral Health Services’ goodwill consists primarily of foreign currency translation adjustments.

[2] Adjustments to goodwill during 2021 consist of the following: $13.5 million in Acute Care Services consists primarily of a measurement period adjustment to the preliminary purchase price allocation related to a 2020 acquisition; and the $11.0 million in Behavioral Health Services consists of $16.3 million recorded in connection with a third party minority ownership interest in a majority owned joint venture that constructed and owns a recently opened behavioral health facility, partially offset by a $5.3 million decrease related to foreign currency translation adjustments.