Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Product warranty period 1 year      
Marketing, communications and advertising expenses $ 217 $ 176 $ 156  
Operating lease right-of-use assets 205     $ 228
Operating lease, liability $ 242     $ 261
Minimum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Customer payment due, standard contractual term 30 days      
Limited product warranty period 1 year      
Maximum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Customer payment due, standard contractual term 60 days      
Limited product warranty period 3 years      
Equipment | Minimum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Property, plant and equipment, useful life 2 years      
Equipment | Maximum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Property, plant and equipment, useful life 6 years