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Derivative financial instruments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Gain (loss) on cash flow hedges $ (5,957) $ (6,069)  
Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets 75,142   $ 61,697
Liabilities $ 22,308   29,957
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 $ 73,005   60,102
Liabilities 22,193   29,163
Gain (loss) on cash flow hedges 6,000 $ 6,100  
After-tax result accumulated in equity 323,900   308,000
Foreign Exchange Derivative Instruments [Member] | Cash Flow Hedge [Member]      
Breakdown of fair value amount of derivative financial instruments [Abstract]      
Assets 2,137   1,595
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 $ 115   $ 794