Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details)

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Financial Instruments (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details) - USD ($)
$ in Millions
Mar. 28, 2020
Dec. 28, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unamortized debt issuance costs $ 4 $ 4
2.125% Convertible Senior Notes due 2026    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 2.125%  
Unamortized debt discount $ 71 73
Carrying amount of the equity component, net 95 95
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, net 488 486
Estimated Fair Value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, net $ 1,810 $ 1,823