v3.26.1
Employee Benefit Plans and Similar Obligations - Additional Information (Detail)
$ / shares in Units, $ in Millions
 12 Months Ended
Apr. 30, 2024
$ / shares
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Number of share options granted in share-based payment arrangement 4,600,000      
Description of maximum term of options granted for share-based payment arrangement The PSARs expire five years after their grant and begin to vest in the third year, subject to the fulfillment of certain conditions, including performance milestones related to the price of the Company’s common shares ranging from a minimum of US$ 30 per common share up to US$ 60 per common share.      
Weighted average remaining contractual life of outstanding share options 3 years      
Weighted average exercise price of share options granted in share-based payment arrangement $ 8.75      
Top of range [member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Percentage contribution to mutual fund retirement plan   10.00%    
Weighted average share price 60      
Bottom of range [member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Percentage contribution to mutual fund retirement plan   3.00%    
Weighted average share price 30      
Value Generation Plan [Member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Number of share options granted in share-based payment arrangement   4,600,000 4,600,000  
Weighted average share price $ 16.17 $ 20.8 $ 28.6  
Expense from share-based payment transactions | $   $ 25 $ 33  
Share Based Benefit Plan Two Thousand And Twenty Five To Two Thousand And Twenty Eight [Member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Weighted average remaining contractual life of outstanding share options   1 year 10 months 24 days 2 years 1 year 8 months 12 days
Retirement Plan [member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Total charges | $   $ 4 $ 4 $ 3
Performance Bonus Programs and Performance Evaluation [Member]        
Disclosure Of Employee Benefit Plans And Similar Obligations [Line Items]        
Total charges | $   $ 189 $ 154 $ 111