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Organization and Basis of Presentation - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
Jan. 01, 2019
Description Of Business [Line Items]                
Operating lease ROU assets $ 140,607   $ 165,969          
Operating lease liabilities 170,155   190,207          
Assets (5,133,479)   (3,949,300)          
Noncontrolling interest in subsidiaries (789,345) $ (870,422) (808,229) $ (742,760) $ (696,324)   $ (724,968)  
Retained deficit 1,211,870   1,265,504          
Cumulative Effect, Period of Adoption, Adjustment                
Description Of Business [Line Items]                
Operating lease ROU assets               $ 192,400
Operating lease liabilities               $ 206,000
Noncontrolling interest in subsidiaries             1,300  
Assets | Cumulative Effect, Period of Adoption, Adjustment                
Description Of Business [Line Items]                
Assets           $ 1,900    
Tax effect impact for increase or decrease to the liability           600    
Noncontrolling Interest in Subsidiaries                
Description Of Business [Line Items]                
Noncontrolling interest in subsidiaries (66,435) (77,690) (59,290) (57,001) (48,349)   (50,321)  
Noncontrolling Interest in Subsidiaries | Cumulative Effect, Period of Adoption, Adjustment                
Description Of Business [Line Items]                
Noncontrolling interest in subsidiaries           600 417  
Tax effect impact for increase or decrease to the liability           200    
Retained Deficit                
Description Of Business [Line Items]                
Noncontrolling interest in subsidiaries $ 1,211,870 $ 1,226,187 $ 1,265,504 $ 1,265,589 $ 1,289,931   1,253,089  
Retained Deficit | Cumulative Effect, Period of Adoption, Adjustment                
Description Of Business [Line Items]                
Noncontrolling interest in subsidiaries             $ 883  
Retained deficit           1,300    
Tax effect impact for increase or decrease to the liability           $ 400