Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Narrative) (Details)

v3.20.1
Financial Instruments (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 28, 2020
Dec. 28, 2019
Foreign Currency Forward Contracts    
Schedule of Investments [Line Items]    
Derivative, notional amount $ 583 $ 739
Cash Flow Hedging | Foreign Currency Forward Contracts    
Schedule of Investments [Line Items]    
Derivative, term of contract 12 months  
Contracts not designated as hedging instruments: | Foreign Currency Forward Contracts    
Schedule of Investments [Line Items]    
Derivative, term of contract 3 months  
2.125% Convertible Senior Notes due 2026    
Schedule of Investments [Line Items]    
Stated interest rate 2.125%  
Share price (in usd per share) $ 46.58  
Conversion price (in usd per share) $ 8.00  
Level 1 | Government money market funds    
Schedule of Investments [Line Items]    
Investment in money market fund and bank guarantee $ 4 4
Mutual Fund | Level 1    
Schedule of Investments [Line Items]    
Other assets $ 33 $ 30