v3.25.4
Employee Retirement Plans - Schedule of Domestic Defined Benefit Plan Assets (Details) - United States - Pension Plan and Other Postretirement Benefits Plan - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount $ 2,966 $ 2,842
Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 666 651
Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 2,299 2,189
Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 1 2
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 1,610 1,261
Equity securities | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 222
Equity securities | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 1,388 1,261
Equity securities | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
U.S. treasury bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 223 294
U.S. treasury bonds | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 223 294
U.S. treasury bonds | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
U.S. treasury bonds | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
U.S. corporate bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 911 876
U.S. corporate bonds | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
U.S. corporate bonds | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 911 876
U.S. corporate bonds | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
Real estate    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 1 2
Real estate | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
Real estate | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount
Real estate | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 1 2
Cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 221 409
Cash equivalents | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 221 357
Cash equivalents | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount 52
Cash equivalents | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, plan assets, amount