v3.26.3
Postemployment Benefits Pension Plans - Net Cost/(Benefit) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 26, 2026
Sep. 27, 2025
Sep. 26, 2026
Sep. 27, 2025
Postretirement Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ 1 $ 1 $ 2
Interest cost 5 7 16 22
Expected return on plan assets (7) (12) (23) (35)
Amortization of prior service costs/(credits) (3) (3) (8) (9)
Amortization of unrecognized losses/(gains) (6) (7) (18) (20)
Net postretirement cost/(benefit) (11) (14) (77) (40)
U.S. Plans | Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 1 1
Interest cost 27 28 81 93
Expected return on plan assets (44) (44) (132) (143)
Amortization of prior service costs/(credits) 0 0 0 1
Amortization of unrecognized losses/(gains) 0 0 0 0
Settlements 0 1 0 11
Net postretirement cost/(benefit) (17) (15) (50) (37)
Non-U.S. Plans | Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1 2 3 4
Interest cost 14 15 41 43
Expected return on plan assets (19) (24) (57) (66)
Amortization of prior service costs/(credits) 1 1 3 2
Amortization of unrecognized losses/(gains) 3 4 9 11
Settlements 0 0 0 0
Net postretirement cost/(benefit) $ 0 $ (2) $ (1) $ (6)