Commitments and Contingencies - Schedule of Changes in General and Professional Liability and Workers Compensation Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	$ 496,416	$ 463,678	$ 368,964
Plus: Accrued insurance expense, net of commercial premiums paid	183,462	174,723	186,215
Less: Payments made in settlement of self-insured claims	(118,089)	(141,985)	(91,501)
Ending balance	561,789	496,416	463,678
General and Professional Liability
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	371,900	348,693	263,779
Plus: Accrued insurance expense, net of commercial premiums paid	127,445	111,763	129,690
Less: Payments made in settlement of self-insured claims	(67,860)	(88,556)	(44,776)
Ending balance	431,485	371,900	348,693
Workers’ Compensation
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	124,516	114,985	105,185
Plus: Accrued insurance expense, net of commercial premiums paid	56,017	62,960	56,525
Less: Payments made in settlement of self-insured claims	(50,229)	(53,429)	(46,725)
Ending balance	$ 130,304	$ 124,516	$ 114,985