Business Acquisitions Divested Entities Pro Forma Information (Details) - Food Group - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Jan. 02, 2021	Dec. 28, 2019
Business Acquisition [Line Items]
Divested entities pro forma net sales	$ 392	$ 516
Income from discontinued operations—net of tax	$ 5	$ 13
Divested entities pro forma basic earnings per share	$ 0.03	$ 0.06
Divested entities pro forma diluted earnings per share	$ 0.02	$ 0.06

Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

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