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Share-based Payment - Summary of Employee Share Options (Detail)
 12 Months Ended
Dec. 31, 2022
shares
$ / shares
Dec. 31, 2021
shares
$ / shares
Dec. 31, 2020
shares
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Outstanding, beginning of year | $ / shares $ 76.12 $ 74.22 $ 74.99
Forfeited | $ / shares   91.64 79.23
Exercised during the year | $ / shares 20.28 41.43  
Outstanding, end of year | $ / shares $ 86.62 $ 76.12 $ 74.22
Outstanding, beginning of year 17,821,000 21,460,000 25,344,000
Granted 0 0 0
Forfeited   (1,702,000) (3,884,000)
Exercised during the year (2,821,000) (1,937,000)  
Outstanding, end of year 15,000,000 17,821,000 21,460,000
Performance Share Units      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Outstanding, beginning of year | $ / shares $ 109.47 $ 140.87  
Granted | $ / shares 60.78 82.6  
Forfeited | $ / shares 286.29 152.7  
Exercised during the year | $ / shares 112.47 141.69  
Outstanding, end of year | $ / shares $ 83.73 $ 109.47 $ 140.87
Outstanding, beginning of year 3,042,000 1,958,000  
Granted 40,000 1,590,000  
Forfeited (325,000) (223,000)  
Exercised during the year (402,000) (283,000)  
Outstanding, end of year 2,355,000 3,042,000 1,958,000