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Goodwill and Intangible Assets - Intangible assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Intangible assets    
Gross Carrying Amount $ 1,157 $ 1,265
Accumulated Amortization (499) (500)
Net 658 765
Patents and technology    
Intangible assets    
Gross Carrying Amount 514 545
Accumulated Amortization (211) (188)
Net $ 303 357
Weighted-Average Amortization Period (in years) 14 years  
Trade names and trademarks    
Intangible assets    
Gross Carrying Amount $ 224 284
Accumulated Amortization (7) (40)
Net $ 217 244
Weighted-Average Amortization Period (in years) 14 years  
Customer relationships and contractual agreements    
Intangible assets    
Gross Carrying Amount $ 413 418
Accumulated Amortization (275) (255)
Net $ 138 163
Weighted-Average Amortization Period (in years) 15 years  
Other    
Intangible assets    
Gross Carrying Amount $ 6 18
Accumulated Amortization $ (6) (17)
Net   1
Weighted-Average Amortization Period (in years) 4 years  
Trade names and trademarks    
Indefinite-lived intangible assets    
Indefinite-lived intangible assets $ 208 $ 222