v3.26.1
Employee Benefits - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]        
Age of employees under condition one   55 years    
Period of service under condition one   5 years    
Age of employees under condition two   50 years    
Period of service under condition two   15 years    
Minimum period of service at the time of termination hired before 2001   15 years    
Settlement loss   $ 0 $ 0  
Percentage increase or decrease in expected return on plan assets   0.25%    
Estimated increase or decrease in net pension cost   $ 2,000,000    
Percentage increase or decrease in assumed discount rate   0.25%    
Estimated change in net pension cost due to discount rate   $ 1,000,000    
Expected return on plan assets on estimating 2025 pension cost   5.25%    
Employer contribution to saving plan   7.00% 7.00%  
Employer discretionary contribution, required service period   1 year    
Total expenses associated with saving plan   $ 132,000,000 $ 145,000,000 $ 99,000,000
Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Employees contribution to saving plan   1.00%    
Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Employees contribution to saving plan   100.00%    
Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost (credit)   $ 7,000,000 $ 11,000,000 $ 30,000,000
Expected return on plan assets   5.25% 5.25% 4.50%
Pension Plans | Forecast        
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost (credit) $ 9,000,000      
Postretirement Benefit Plan        
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost (credit)   $ (2,000,000) $ (2,000,000) $ (2,000,000)
Postretirement Benefit Plan | Forecast        
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost (credit) $ (2,000,000)