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Derivatives and Fair Value of Financial Instruments-Counterparty Risk (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 26, 2020
USD ($)
item
Sep. 28, 2019
USD ($)
Sep. 26, 2020
USD ($)
item
Sep. 28, 2019
USD ($)
Commodities | Cost of sales        
Derivatives        
Gains (losses) on derivatives $ 10 $ (17) $ 27 $ (48)
Foreign currencies        
Derivatives        
Number of counterparties | item 3   3  
Foreign currencies | Maximum        
Derivatives        
Credit risk associated with derivative contracts     $ 4  
Foreign currencies | Cost of sales        
Derivatives        
Gains (losses) on derivatives $ 2 $ 1 15 5
Foreign currencies | Foreign currency gains (losses), net        
Derivatives        
Gains (losses) on derivatives (3)   (2)  
Equity | Other investment income (loss), net        
Derivatives        
Gains (losses) on derivatives $ (16)   7 $ (3)
Interest rate swaps | Interest expense        
Derivatives        
Gains (losses) on derivatives     $ (1)