Financial Information for the Company and Its Subsidiaries - Summarized Balance Sheet (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Current assets	$ 530,099	$ 495,031
Property and equipment, net	1,795,791	1,771,159
Goodwill	2,200,659	2,199,937
Current liabilities	410,751	404,861
Long-term debt	1,463,848	1,478,626
Redeemable noncontrolling interests	70,304	65,388
Total equity	2,574,510	2,517,489	$ 2,434,446	$ 2,356,586	$ 2,297,999	$ 1,899,456
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Current assets	453,748	422,113
Property and equipment, net	1,534,615	1,525,569
Goodwill	2,087,700	2,086,978
Total noncurrent assets	3,908,572	3,893,087
Current liabilities	388,834	385,044
Long-term debt	1,447,937	1,460,046
Total noncurrent liabilities	1,753,630	1,752,271
Total equity	$ 2,219,856	$ 2,177,885