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Financial Information for the Company and Its Subsidiaries - Summarized Balance Sheet (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]            
Current assets $ 528,225 $ 2,523,395        
Property and equipment, net 1,654,732 1,622,896        
Goodwill 2,105,264 2,105,264        
Current liabilities 410,979 1,308,185        
Long-term debt 1,484,212 2,968,948        
Redeemable noncontrolling interests 56,700 55,315        
Total equity 2,297,999 1,899,456 $ 2,606,639 $ 2,503,338 $ 2,464,167 $ 2,505,381
Parent [Member]            
Condensed Financial Statements, Captions [Line Items]            
Current assets 469,786 654,735        
Property and equipment, net 1,451,690 1,421,875        
Goodwill 1,992,305 1,992,305        
Total noncurrent assets 3,661,678 3,640,809        
Current liabilities 390,351 626,419        
Long-term debt 1,458,735 2,786,125        
Total noncurrent liabilities 1,728,106 3,045,981        
Total equity $ 2,013,007 $ 623,144