v3.21.2
Derivative financial instruments (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Loss on cash flow hedges $ 30,443 $ 30,043  
Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets 5,265   $ 1,559
Liabilities $ 266,459   328,184
Interest Rate Derivatives [Member] | Euros [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Percent of notional amount of debt hedged in next 12 months 100.00%    
Percentage of notional amount of debt hedged in year two 75.00%    
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets $ 3,711   898
Liabilities 248,608   302,302
Loss on cash flow hedges (30,400) $ (30,000)  
After-tax result accumulated in equity 140,400   96,600
Foreign Exchange Derivative Instruments [Member] | Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets 1,554   661
Liabilities 0   0
Notes Conversion Option [Member] | Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets 0   0
Liabilities $ 17,851   $ 25,882