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Subsequent events (Details)
€ in Millions
9 Months Ended
Nov. 08, 2022
$ / shares
Oct. 20, 2022
EUR (€)
Sep. 30, 2022
Dec. 04, 2020
Refinanced Project Debt [Abstract]        
Maturity date     December 4, 2025  
Interest rate       2.50%
Subsequent Events [Member]        
Refinanced Project Debt [Abstract]        
Project debt financed amount | €   € 205    
Maturity date   2037    
Dividends Approved [Abstract]        
Dividend declaration date Nov. 08, 2022      
Dividend approved (in dollars per share) | $ / shares $ 0.445      
Dividend approved expected date to be paid Dec. 15, 2022      
Subsequent Events [Member] | EURIBOR [Member]        
Refinanced Project Debt [Abstract]        
Maturity date   2025    
Variable interest period   6 months    
Percentage of exposure hedged   19.00%    
Interest rate   1.00%    
Subsequent Events [Member] | EURIBOR [Member] | Swap [member]        
Refinanced Project Debt [Abstract]        
Percentage of exposure hedged   71.00%    
Interest rate   2.36%    
Subsequent Events [Member] | EURIBOR [Member] | 2022-2027 [Member]        
Refinanced Project Debt [Abstract]        
Interest accrue rate   1.50%    
Subsequent Events [Member] | EURIBOR [Member] | 2027-2032 [Member]        
Refinanced Project Debt [Abstract]        
Interest accrue rate   1.60%    
Subsequent Events [Member] | EURIBOR [Member] | 2032-2037 [Member]        
Refinanced Project Debt [Abstract]        
Interest accrue rate   1.70%