Restructuring - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 252	$ 247	$ 266
Supply Chain
Restructuring Cost and Reserve [Line Items]
Restructuring charges	473
Restructuring costs incurred since announced	1,800
Supply Chain | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	300
Supply Chain | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100
Supply Chain | Other Income Expense Net
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100
Supply Chain | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected future savings	600
Pre-tax restructuring charges	$ 2,100
Restructuring and related cost, duration of restructuring plan	4 years
Supply Chain | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected future savings	$ 800
Pre-tax restructuring charges	$ 2,300
Restructuring and related cost, duration of restructuring plan	5 years