Retirement Plans - Obligations and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Pension Benefits
Change in projected benefit obligation
Projected benefit obligation at beginning of year	$ 6,848	$ 9,339
Service cost	67	108	$ 116
Interest cost	364	272	252
Plan participants’ contributions	0	0
Actuarial losses (gains)	330	(2,373)
Benefits paid	(444)	(448)
Plan amendment	7	1
Foreign exchange rate changes and other	33	(51)
Projected benefit obligation at end of year	7,205	6,848	9,339
Change in fair value of plan assets
Balance at beginning of year	7,943	9,947
Actual return on plan assets	832	(1,520)
Employer contributions	36	37
Benefits paid	(444)	(448)
Foreign exchange rate changes and other	46	(73)
Balance at end of year	8,413	7,943	9,947
Funded status at end of year	1,208	1,095
Postretirement Benefits Other than Pensions
Change in projected benefit obligation
Projected benefit obligation at beginning of year	150	202
Service cost	2	2	3
Interest cost	8	6	5
Plan participants’ contributions	3	4
Actuarial losses (gains)	(7)	(40)
Benefits paid	(20)	(24)
Plan amendment	0	0
Foreign exchange rate changes and other	0	0
Projected benefit obligation at end of year	136	150	$ 202
Change in fair value of plan assets
Funded status at end of year	$ (136)	$ (150)