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Share Based Compensation - Exercise price ranges (Details)
shares in Thousands, Option in Thousands
12 Months Ended
Dec. 31, 2022
Option
$ / shares
shares
Dec. 31, 2021
Option
$ / shares
shares
Dec. 31, 2020
Option
$ / shares
Share Based Compensation      
Number of share options | Option 21,068 37,090 38,373
Weighted average remaining contractual life 3 years    
Weighted Average Exercise Price $ 38.55 $ 38.39 $ 39.65
Number of exercisable share option | Option 16,407 28,421  
Weighted Average Exercise Price Exercisable $ 40.19 $ 39.87  
Common shares authorized for issuance | shares 27,901 25,037  
22.00-23.27      
Share Based Compensation      
Number of share options | Option 2,658    
Weighted average remaining contractual life 5 years    
Weighted Average Exercise Price $ 22.65    
Number of exercisable share option | Option 1,064    
Weighted Average Exercise Price Exercisable $ 22.65    
22.00-23.27 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 22.63    
22.00-23.27 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 24.99    
23.28-24.99      
Share Based Compensation      
Number of share options | Option 9    
Weighted average remaining contractual life 5 years    
Weighted Average Exercise Price $ 29.31    
Number of exercisable share option | Option 3    
Weighted Average Exercise Price Exercisable $ 29.34    
23.28-24.99 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 25.00    
23.28-24.99 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 29.99    
30.00-34.99      
Share Based Compensation      
Number of share options | Option 731    
Weighted Average Exercise Price $ 30.30    
Number of exercisable share option | Option 718    
Weighted Average Exercise Price Exercisable $ 30.28    
30.00-34.99 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 30.00    
30.00-34.99 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 34.99    
35.00-39.99      
Share Based Compensation      
Number of share options | Option 6,176    
Weighted average remaining contractual life 4 years    
Weighted Average Exercise Price $ 38.37    
Number of exercisable share option | Option 3,255    
Weighted Average Exercise Price Exercisable $ 38.85    
35.00-39.99 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 35.00    
35.00-39.99 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 39.99    
40.00-44.99      
Share Based Compensation      
Number of share options | Option 11,298    
Weighted average remaining contractual life 2 years    
Weighted Average Exercise Price $ 42.73    
Number of exercisable share option | Option 11,235    
Weighted Average Exercise Price Exercisable $ 42.75    
40.00-44.99 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 40.00    
40.00-44.99 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 44.99    
45.00-49.99      
Share Based Compensation      
Number of share options | Option 101    
Weighted average remaining contractual life 5 years    
Weighted Average Exercise Price $ 48.05    
Number of exercisable share option | Option 44    
Weighted Average Exercise Price Exercisable $ 48.41    
45.00-49.99 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 45.00    
45.00-49.99 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 49.99    
50.00-54.27      
Share Based Compensation      
Number of share options | Option 95    
Weighted average remaining contractual life 3 years    
Weighted Average Exercise Price $ 52.78    
Number of exercisable share option | Option 88    
Weighted Average Exercise Price Exercisable $ 52.85    
50.00-54.27 | Minimum      
Share Based Compensation      
Exercise price (in dollars per share) 50.00    
50.00-54.27 | Maximum      
Share Based Compensation      
Exercise price (in dollars per share) $ 54.27