Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Pension Benefits
Net periodic benefit income
Service cost	$ 27	$ 29	$ 81	$ 87
Interest cost	69	62	205	188
Expected return on plan assets	(152)	(143)	(458)	(431)
Amortization of net actuarial loss	22	39	66	116
Amortization of prior service cost	3	4	9	10
Net periodic benefit income	(31)	(9)	(97)	(30)
Pension Benefits | United States
Net periodic benefit income
Cost associated with the defined contribution component	2	2	9	8
Postretirement Benefits Other Than Pensions
Net periodic benefit income
Service cost	1	1	2	2
Interest cost	1	1	4	4
Amortization of net actuarial loss	(1)	(1)	(3)	(2)
Amortization of prior service cost	(1)	(2)	(3)	(4)
Net periodic benefit income	$ 0	$ (1)	$ 0	$ 0