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Share Plans - Schedule of Share Options Activities (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Number of shares    
Beginning balance (in shares) 579,153  
Granted during the year (in shares) 314,828  
Exercised during the year (in shares) (116,148)  
Accrued dividend awards (in shares) 10,902  
Lapsed during the year (in shares) (75,638)  
Ending balance (in shares) 713,097 579,153
Options exercisable at December 31, 2023 (in shares) 16,423  
Options expected to vest as of December 31, 2023 (in shares) 387,123  
Weighted- average exercise price    
Beginning balance (in USD per share) $ 1.00  
Granted during the year (in USD per share) 1.00  
Exercised during the year (in USD per share) 1.00  
Accrued dividend awards (in USD per share) 1.00  
Lapsed during the year (in USD per share) 1.00  
Ending balance (in USD per share) 1.00 $ 1.00
Options exercisable at December 31, 2023 (in USD per share) 1.00  
Options expected to vest as of December 31, 2023 (in USD per share) $ 1.00  
Weighted- average remaining contractual life (years) 3 years 3 years
Options exercisable, weighted-average remaining contractual life 2 years 10 months 24 days  
Options expected to vest, weighted-average remaining contractual life 3 years  
Aggregate intrinsic value ($M) $ 6.4 $ 8.0
Options exercisable, aggregate intrinsic value 0.1  
Options expected to vest, aggregate intrinsic value $ 3.5