Annual report pursuant to Section 13 and 15(d)

Financial Instruments (Details) (Narrative)

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Financial Instruments (Details) (Narrative) - USD ($)
$ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Foreign Currency Forward Contracts    
Schedule of Investments [Line Items]    
Derivative, Notional Amount $ 396 $ 300
Derivative, Term of Contract 12 months  
Government money Market Funds | Level 1    
Schedule of Investments [Line Items]    
Cash equivalents pledged as collateral $ 5 2
Mutual Funds | Level 1    
Schedule of Investments [Line Items]    
Restricted investments $ 21 $ 18