Reportable Segments Narrative (Details) $ in Millions		12 Months Ended
	Jul. 28, 2019 USD ($)	Jan. 01, 2022 USD ($)	Jan. 02, 2021 USD ($)	Dec. 28, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments		4
Net sales		$ 14,181	$ 13,770	$ 13,578
Operating profit		1,752	1,761	1,401
Proceeds from divestiture of businesses		0	(7)	1,332
United States
Segment Reporting Information [Line Items]
Net sales		$ 7,646	$ 7,821	$ 7,885
Walmart Stores Inc [Member] | Customer Concentration Risk [Member] | Sales [Member] | United States | Revenue
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		19.00%	19.00%	19.00%
North America
Segment Reporting Information [Line Items]
Net sales		$ 8,174	$ 8,361	$ 8,390
Operating profit		$ 1,329	$ 1,473	1,215	[1]
Cookies, fruit and fruit flavored snacks, pie crusts and ice cream cones businesses
Segment Reporting Information [Line Items]
Proceeds from divestiture of businesses	$ 1,300
Net assets	1,300
Cookies, fruit and fruit flavored snacks, pie crusts and ice cream cones businesses | North America
Segment Reporting Information [Line Items]
Net sales				$ 562
Proceeds from divestiture of businesses	1,300
Net assets	$ 1,300

[1] During 2019, North America operating profit includes the recognition of multi-employer pension plan exit liabilities totaling $132 million.