Retirement Plans Components of Net Periodic Pension and Other Postretirement Benefit Costs (Credits) (Details) - Pension Benefits - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 3	$ 3
Interest cost	38	30	29
Expected return on plan assets	(47)	(52)	(54)
Amortization of net loss	3	0	0
Net periodic pension benefit (credits) costs	$ (4)	$ (19)	$ (22)