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Derivative Instruments - Derivatives Not Designated as Hedging Instruments (Details)
2 Months Ended 3 Months Ended 12 Months Ended
Jun. 02, 2021
USD ($)
Apr. 15, 2020
USD ($)
$ / €
Jun. 04, 2019
USD ($)
$ / €
May 15, 2019
USD ($)
Apr. 02, 2019
USD ($)
Jun. 15, 2020
USD ($)
$ / €
Jun. 30, 2021
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
swapAgreement
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Nov. 30, 2020
USD ($)
Nov. 30, 2020
swapAgreement
Nov. 30, 2020
educationalInstitution
Nov. 30, 2020
BRL (R$)
Nov. 30, 2020
R$ / $
Apr. 08, 2020
USD ($)
$ / €
Apr. 08, 2020
EUR (€)
$ / €
Sep. 30, 2019
MXN ($)
swapAgreement
Sep. 30, 2019
AUD ($)
swapAgreement
May 31, 2019
USD ($)
$ / €
May 31, 2019
EUR (€)
$ / €
May 01, 2019
swapAgreement
Apr. 30, 2019
EUR (€)
swapAgreement
Dec. 31, 2018
USD ($)
swapAgreement
$ / €
Dec. 31, 2018
EUR (€)
swapAgreement
$ / €
Dec. 31, 2012
USD ($)
swapAgreement
Dec. 31, 2010
swapAgreement
Derivative [Line Items]                                                          
Settlement of derivatives related to sale of discontinued operations and net investment hedge                   $ (50,341,000) $ 0 $ 12,866,000                                  
Derivative liability                     25,824,000                                    
Realized gain (loss)                   (24,517,000) (25,980,000) 8,300,000                                  
Derivatives Not Designated As Hedging Instruments: | Net investment cross currency swaps                                                          
Derivative [Line Items]                                                          
Deferred premium payments                         $ 18,294,000                                
Loss on sale $ 33,710,000                                                        
Derivatives Not Designated As Hedging Instruments: | Cross Currency Swaps                                                          
Derivative [Line Items]                                                          
Derivative liability, current                   0 17,680,000                                    
Derivative liability, noncurrent                   $ 0 $ 8,144,000                                    
Number of currency derivatives held (derivative instrument) | swapAgreement                                               9   2 2    
Brazil, Brazil Real | Derivatives Not Designated As Hedging Instruments: | Currency Swap, Deal Contingent                                                          
Derivative [Line Items]                                                          
Number of interest rate derivatives held (derivative instrument)                           6 2                            
Brazil, Brazil Real | Derivatives Not Designated As Hedging Instruments: | Cross Currency Interest Rate Contract, Instrument Three and Four                                                          
Derivative [Line Items]                                                          
Derivative, notional amount | R$                               R$ 1,900,000,000                          
Brazil, Brazil Real | Derivatives Not Designated As Hedging Instruments: | Cross Current Interest Rate Contract, Instrument Four                                                          
Derivative [Line Items]                                                          
Derivative, notional amount | R$                               950,000,000                          
Brazil, Brazil Real | Derivatives Not Designated As Hedging Instruments: | Net investment cross currency swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount                         $ 343,783,000     R$ 1,875,000,000                          
Derivative, swap type, variable price | R$ / $                                 5.4540                        
Settlement of derivatives related to sale of discontinued operations and net investment hedge             $ 1,663,000                                            
Brazil, Brazil Real | Derivatives Not Designated As Hedging Instruments: | Net investment cross currency swaps | Put/Call Options                                                          
Derivative [Line Items]                                                          
Number of interest rate derivatives held (derivative instrument) | educationalInstitution                             4                            
Australia, Dollars | Derivatives Not Designated As Hedging Instruments: | Net investment cross currency swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount           $ 12,921,000                       $ 13,713,000 € 21,000,000                    
Derivative, swap type, variable price | $ / €   0.6530       0.6153                                              
Unrealized gain on derivatives           $ 1,340,000                                              
Australia, Dollars | Derivatives Not Designated As Hedging Instruments: | Cross Currency Swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount               $ 7,443,000       7,443,000                 $ 11,000,000                
Derivative, swap type, variable price                                       0.6766 0.6766                
Number of currency derivatives held (derivative instrument) | swapAgreement                                       2 2                
Realized gain (loss)               45,000                                          
Australia, Dollars | Derivatives Not Designated As Hedging Instruments: | Cross Currency Interest Rate Contract, Instrument Two                                                          
Derivative [Line Items]                                                          
Derivative, notional amount                                   $ 12,999,000 € 21,000,000                    
Derivative, swap type, variable price | $ / €                                   0.6190 0.6190                    
Unrealized gain on derivatives   $ (714,000)                                                      
Euro Member Countries, Euro | Derivatives Not Designated As Hedging Instruments: | Cross Currency Swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount     $ 597,149,000                                     $ 423,003,000 € 532,000,000   € 375,000,000        
Derivative, swap type, variable price | $ / €     1.122461                                     1.128007 1.128007            
Unrealized gain on derivatives     $ 565,000 $ (1,644,000)                                                  
Number of currency derivatives held (derivative instrument) | swapAgreement                                                 7        
Euro Member Countries, Euro | Derivatives Not Designated As Hedging Instruments: | Swap 1                                                          
Derivative [Line Items]                                                          
Derivative, notional amount                                                   $ 314,573,000 € 275,000,000    
Derivative, swap type, variable price | $ / €                                                   1.1439 1.1439    
Unrealized gain on derivatives         $ (5,088,000)                                                
Euro Member Countries, Euro | Derivatives Not Designated As Hedging Instruments: | Cross Currency Interest Rate Contract, Maturing April 8, 2019                                                          
Derivative [Line Items]                                                          
Derivative, notional amount                                                   $ 310,750,000 € 275,000,000    
Derivative, swap type, variable price | $ / €                                                   1.13 1.13    
Derivative, cost of hedge         $ 980,000                                                
Chile, Pesos | Derivatives Not Designated As Hedging Instruments: | Cross Currency Swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount                                                       $ 31,000  
Derivative, cost of hedge                 $ 8,200,000                                        
Derivative, number of instruments held (derivative instrument) | swapAgreement                 4                                       4
Chile, Pesos | Derivatives Not Designated As Hedging Instruments: | Cross Currency Interest Rate Contract, Maturing December 1, 2024                                                          
Derivative [Line Items]                                                          
Derivative, number of instruments held (derivative instrument) | swapAgreement                                                       1  
Chile, Pesos | Derivatives Not Designated As Hedging Instruments: | Cross Currency Interest Rate Contract, Maturing July 1, 2025                                                          
Derivative [Line Items]                                                          
Derivative, number of instruments held (derivative instrument) | swapAgreement                                                       3  
Mexico, Pesos | Derivatives Not Designated As Hedging Instruments: | Cross Currency Swaps                                                          
Derivative [Line Items]                                                          
Derivative, notional amount               $ 23,000,000       $ 23,000,000               $ 453,146,000                  
Derivative, swap type, variable price               0.0508       0.0508                                  
Number of currency derivatives held (derivative instrument) | swapAgreement                                       3 3                
Realized gain (loss)               $ (583,000)