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Loans and other liabilities - Terms and debt repayment schedule (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]    
Face value $ 188.0 $ 269.6
Carrying Amount $ 188.0 $ 251.5
Long-term loans    
Disclosure of detailed information about borrowings [line items]    
Effective interest rate (as a percent) 7.60%  
Face value $ 119.4  
Carrying Amount 119.4  
Tranche E Long term loan    
Disclosure of detailed information about borrowings [line items]    
Effective interest rate (as a percent)   8.70%
Face value   $ 74.7
Carrying Amount   $ 56.6
Early repayment of secured notes 66.0  
Others- Long term loan    
Disclosure of detailed information about borrowings [line items]    
Effective interest rate (as a percent)   6.60%
Face value   $ 86.3
Carrying Amount   86.3
Long-term liabilities    
Disclosure of detailed information about borrowings [line items]    
Face value 15.6 2.1
Carrying Amount $ 15.6 $ 2.1
Short-term credit from banks    
Disclosure of detailed information about borrowings [line items]    
Effective interest rate (as a percent) 5.90% 2.40%
Face value $ 53.0 $ 106.5
Carrying Amount $ 53.0 $ 106.5
Short-term credit from banks, subject to Libor +2.8%    
Disclosure of detailed information about borrowings [line items]    
Adjustment to effective interest rate basis 2.95%  
Carrying Amount $ 35.0