Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Pension Benefits
Net periodic benefit cost (credit)
Service cost	$ 27	$ 29	$ 54	$ 58
Interest cost	68	63	136	126
Expected return on plan assets	(153)	(144)	(306)	(288)
Amortization of net actuarial loss	22	38	44	77
Amortization of prior service cost	3	3	6	6
Net periodic benefit (income) cost	(33)	(11)	(66)	(21)
Pension Benefits | United States
Net periodic benefit cost (credit)
Defined contribution component	3	3	7	6
Postretirement Benefits Other Than Pensions
Net periodic benefit cost (credit)
Service cost	0	0	1	1
Interest cost	2	2	3	3
Amortization of net actuarial loss	(1)	0	(2)	(1)
Amortization of prior service cost	(1)	(1)	(2)	(2)
Net periodic benefit (income) cost	$ 0	$ 1	$ 0	$ 1