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Finance debt - Currency of long-term debt percentage (Details) - Average
Dec. 31, 2022
Dec. 31, 2021
Short term debt | Euro    
Borrowings    
Borrowings, interest rate (as a percent) 0.90%  
Short term debt | U.S. dollars    
Borrowings    
Borrowings, interest rate (as a percent) 2.20% 0.20%
Short term debt | Other currencies    
Borrowings    
Borrowings, interest rate (as a percent)   (0.30%)
Long term debt and current portion of long term debt | Euro    
Borrowings    
Borrowings, interest rate (as a percent) 1.80% 1.50%
Long term debt and current portion of long term debt | U.S. dollars    
Borrowings    
Borrowings, interest rate (as a percent) 5.10% 3.80%
Long term debt and current portion of long term debt | Other currencies    
Borrowings    
Borrowings, interest rate (as a percent) 2.40%