Retirement Plans Components of Net Periodic Pension and Other Postretirement Benefit Costs (Credits) (Details) - Pension Benefits - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 3	$ 2
Interest cost	29	32	37
Expected return on plan assets	(54)	(55)	(49)
Amortization of net loss	0	1	4
Settlements	0	0	12
Net periodic pension benefit (credits) costs	$ (22)	$ (19)	$ 6