Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Pension Benefits
Net periodic benefit income
Service cost	$ 16	$ 27	$ 33	$ 53
Interest cost	91	68	182	137
Expected return on plan assets	(153)	(153)	(305)	(306)
Amortization of net actuarial loss	1	22	1	44
Amortization of prior service cost	3	3	6	6
Net periodic benefit income	(42)	(33)	(83)	(66)
Pension Benefits | United States
Net periodic benefit income
Cost associated with the defined contribution component	2	3	6	7
Postretirement Benefits Other Than Pensions
Net periodic benefit income
Service cost	1	0	1	1
Interest cost	2	2	4	3
Amortization of net actuarial loss	(2)	(1)	(4)	(2)
Amortization of prior service cost	(1)	(1)	(2)	(2)
Net periodic benefit income	$ 0	$ 0	$ (1)	$ 0