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Divestiures, West Africa Investments and Acquisitions Investment in TAF Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Mar. 30, 2019
Dec. 29, 2018
Sep. 29, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Business Acquisition [Line Items]                      
Net sales $ 3,223 $ 3,372 $ 3,461 $ 3,522 $ 3,317 $ 3,469 $ 3,360 $ 3,401 $ 13,578 $ 13,547 $ 12,854
Tolaram Africa Foods (TAF) PTE LTD                      
Business Acquisition [Line Items]                      
Equity method investment, aggregate cost         $ 458         458  
Equity Method Investment, Other than Temporary Impairment                   45  
Net sales                 $ 581 $ 350