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Summary of Significant Accounting Policies - Leases Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
renewal_option
lease
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jan. 01, 2019
USD ($)
Lessee, Lease, Description [Line Items]              
Renewal option | renewal_option     1        
Accounting Standards Update [Extensible List] ASU 2016-02            
Cumulative effect of new accounting principle in period of adoption $ 1,862,463 $ 758,771 $ 857,068 $ 959,707 $ 1,136,729 $ 1,464,227  
Number of leases not yet commenced | lease     14        
Total undiscounted lease payment     $ 456,700        
United Kingdom              
Lessee, Lease, Description [Line Items]              
Total undiscounted lease payment     $ 5,000        
Operating leases not yet commenced, term     25 years        
Adjustment              
Lessee, Lease, Description [Line Items]              
Cumulative effect of new accounting principle in period of adoption $ 5,781            
Minimum              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, term     5 years        
Lessee, operating lease, renewal term     5 years        
Operating leases not yet commenced, term     10 years        
Minimum | Vehicle And Equipment              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, term     1 year        
Maximum              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, term     10 years        
Lessee, operating lease, renewal term     1 year        
Operating leases not yet commenced, term     25 years        
Maximum | Vehicle And Equipment              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, term     7 years        
ASU 2016-02 | Adjustment              
Lessee, Lease, Description [Line Items]              
Cumulative effect of new accounting principle in period of adoption             $ 5,800