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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Statutory U.S. federal rate 21.00% 21.00% 21.00%  
Operating loss carryforwards, valuation allowance $ 277,000 $ 6,000    
Valuation allowance 277,000 6,000    
Capital loss 16,000 0    
Unrecognized tax benefits 63,134 53,509 $ 52,159 $ 131,608
Unrecognized tax benefits recognition impact on effective tax rate 56,000      
Interest on income taxes accrued net of related benefit 11,000 12,000 14,000  
Interest on income tax expense net of related tax benefit (1,000) $ (1,000) $ (7,000)  
Possible decrease in uncertain tax position $ 3,000      
Minimum        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Combination of subsidiaries 3 years      
Maximum        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Combination of subsidiaries 4 years