v3.25.4
Employee Benefit Plans and Postretirement Benefits - Assumptions Utilized in Determining the Funded Status and Net Periodic Cost of Defined Benefit Pension Plans and Other Postretirement Benefit Plans (Details)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension plans      
Weighted-average rate assumptions used to determine funded status      
Discount rate 4.93% 4.89% 4.22%
Rate of compensation increase 2.80% 2.80% 2.91%
Weighted-average rate assumptions used to determine expense      
Discount rates—service cost 2.77% 2.80% 3.51%
Discount rates—interest cost 4.66% 4.22% 4.65%
Rate of compensation increase 2.80% 2.91% 3.03%
Long-term rates of return on plan assets 4.78% 5.22% 4.54%
Healthcare plans      
Weighted-average rate assumptions used to determine funded status      
Discount rate 4.96% 5.36% 4.97%
Rate of compensation increase   4.00% 4.00%
Initial healthcare cost trend rate 5.46% 5.35% 4.70%
Weighted-average, ultimate healthcare cost trend rate 4.03% 4.08% 3.74%
Weighted-average rate assumptions used to determine expense      
Discount rates—service cost 5.59% 5.11% 5.37%
Discount rates—interest cost 5.07% 4.91% 5.17%
Rate of compensation increase 4.00% 4.00% 4.00%
Long-term rates of return on plan assets 5.25% 6.25% 5.75%
Initial healthcare cost trend rate 5.35% 4.70% 5.12%
Weighted-average, ultimate healthcare cost trend rate 4.08% 3.74% 4.00%
Other      
Weighted-average rate assumptions used to determine funded status      
Discount rate 3.80% 3.67% 3.50%
Rate of compensation increase 2.71% 3.00% 2.94%
Weighted-average rate assumptions used to determine expense      
Discount rates—service cost 3.87% 3.73% 4.32%
Discount rates—interest cost 3.61% 3.51% 4.08%
Rate of compensation increase 3.00% 2.94% 3.19%