Commitments and Contingencies - Schedule of Changes in General and Professional Liability and Workers Compensation Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	$ 463,678	$ 368,964	$ 322,824
Plus: Accrued insurance expense, net of commercial premiums paid	174,723	186,215	159,223
Less: Payments made in settlement of self-insured claims	(141,985)	(91,501)	(113,083)
Ending balance	496,416	463,678	368,964
General and Professional Liability
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	348,693	263,779	241,820
Plus: Accrued insurance expense, net of commercial premiums paid	111,763	129,690	91,518
Less: Payments made in settlement of self-insured claims	(88,556)	(44,776)	(69,559)
Ending balance	371,900	348,693	263,779
Workers’ Compensation
Commitments and Contingencies Disclosure [Line Items]
Beginning balance	114,985	105,185	81,004
Plus: Accrued insurance expense, net of commercial premiums paid	62,960	56,525	67,705
Less: Payments made in settlement of self-insured claims	(53,429)	(46,725)	(43,524)
Ending balance	$ 124,516	$ 114,985	$ 105,185