v3.26.1
Share-based Payment - Summary of Employee Share Options (Detail)
Years in Thousands
12 Months Ended
Dec. 31, 2025
¥ / shares
Dec. 31, 2025
shares
Dec. 31, 2025
$ / shares
Dec. 31, 2025
Years
Dec. 31, 2024
¥ / shares
Dec. 31, 2024
shares
Dec. 31, 2024
$ / shares
Dec. 31, 2024
Years
Dec. 31, 2023
¥ / shares
Dec. 31, 2023
shares
Dec. 31, 2023
$ / shares
Dec. 31, 2023
Years
Disclosure of terms and conditions of share-based payment arrangement [line items]                        
Outstanding, beginning of year | ¥ / shares ¥ 88.9       ¥ 87.58       ¥ 86.62      
Exercised during the year | ¥ / shares         8       8      
Forfeited and other change during the year | (per share) 49.1       89.2           $ 98.34  
Outstanding, end of year | ¥ / shares 97.38       88.9       87.58      
Outstanding, beginning of year | shares   10,710,000       13,394,000       15,000,000    
Exercised during the year | shares           (247,000)       (181,000)    
Forfeited and other change during the year   (1,884,000)   (14)   (2,437,000)   (614)   (1,425,000)   (119)
Outstanding, end of year | shares   8,826,000       10,710,000       13,394,000    
Performance Share Units                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                        
Outstanding, beginning of year | ¥ / shares 30.46       50.48       83.73      
Granted | ¥ / shares                 8.9      
Exercised during the year | ¥ / shares         61.44       431.02      
Forfeited and other change during the year | $ / shares     $ 11.51       $ 39.95       $ 147.31  
Outstanding, end of year | ¥ / shares ¥ 30.84       ¥ 30.46       ¥ 50.48      
Outstanding, beginning of year | shares   847,000       2,096,000       2,355,000    
Granted | shares                   32,000    
Exercised during the year | shares           (635,000)       (172,000)    
Outstanding, end of year | shares   833,000       847,000       2,096,000