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)

v3.19.2
Financial Instruments (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details) - USD ($)
$ in Millions
Jun. 29, 2019
Dec. 29, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unamortized debt issuance costs $ 14 $ 16
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 $ 249 262
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt, net 0 136
Long-term debt, net 1,031 1,114
Estimated Fair Value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt, net 0 136
Long-term debt, net $ 3,656 $ 2,428