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Acquisitions - Summary of Changes in Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Business Combinations [Abstract]
Goodwill balance			$ 2,199,937	$ 2,105,264
Increase from acquisitions			9,488	97,122
2021 dispositions	$ (700)	$ (1,800)		(2,449)
Adjustments related to 2021 acquisitions			8,761
Increase from contributions of redeemable noncontrolling interests			4,619
Goodwill balance	$ 2,199,937		$ 2,222,805	$ 2,199,937

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