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Retirement and Other Employee Benefits - Pension and Postretirement Health Care Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Postretirement Health Care Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost $ 1 $ 1
Expected return on plan assets (3) (3)
Amortization of:    
Unrecognized net loss 1 1
Unrecognized prior service cost (benefit) 1 1
Net periodic pension benefits 0 0
U.S. | Pension Benefit Plan    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 50 47
Expected return on plan assets (76) (74)
Amortization of:    
Unrecognized net loss 6 6
Unrecognized prior service cost (benefit) 0 0
Net periodic pension benefits (20) (21)
Foreign Plan | Pension Benefit Plan    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 14 14
Expected return on plan assets (26) (26)
Amortization of:    
Unrecognized net loss 2 2
Unrecognized prior service cost (benefit) (1) (1)
Net periodic pension benefits $ (11) $ (11)