v3.26.1
Postemployment Benefits - Postretirement Benefit Plans Net Cost/(Benefit) (Details) - Postretirement Plans - USD ($)
$ in Millions
3 Months Ended
Mar. 28, 2026
Mar. 29, 2025
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0 $ 1
Interest cost 6 7
Expected return on plan assets (8) (12)
Amortization of prior service costs/(credits) (3) (3)
Amortization of unrecognized losses/(gains) (6) (6)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement (45) 0
Net postretirement cost/(benefit) $ (56) $ (13)