v3.25.4
Benefit Plans and Other Postretirement Benefits, Expected long-term rate of return (Details) - Pension Plan - UNITED STATES
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure      
Expected long-term return on assets (as a percent) 5.50% 5.50% 5.50%
Defined Benefit Plan, Equity Securities      
Defined Benefit Plan Disclosure      
Target allocation (as a percent) 15.00% 15.00%  
Actual Investment Allocation used during the year (as a percent) as the basis for determining the expected long-term rate of return 15.00%    
Expected long-term return on assets (as a percent) 5.90%    
Fixed Income Securities      
Defined Benefit Plan Disclosure      
Target allocation (as a percent) 85.00% 85.00%  
Actual Investment Allocation used during the year (as a percent) as the basis for determining the expected long-term rate of return 85.00%    
Expected long-term return on assets (as a percent) 5.40%