v3.25.4
Pension and Other Benefit Programs - Fair Value Of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements $ 689 $ 709
Funded status 69 55
Post-retirement Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
Funded status (115) (116)
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 116 161
Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 567 542
Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 6 6
Cash    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 7 8
Cash | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 7 8
Cash | Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
Cash | Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
U.S. large-cap    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 19 20
U.S. large-cap | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
U.S. large-cap | Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 19 20
U.S. large-cap | Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
U.S. small-cap    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 5 5
U.S. small-cap | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
U.S. small-cap | Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 5 5
U.S. small-cap | Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
International    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 10 10
International | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
International | Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 10 10
International | Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 0 0
Fixed income securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 648 666
Fixed income securities | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 109 153
Fixed income securities | Significant Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements 533 507
Fixed income securities | Significant Unobservable Inputs  (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair Value Measurements $ 6 $ 6