Annual report pursuant to Section 13 and 15(d)

Debt and Other Obligations (Details) (2.125% Notes)

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Debt and Other Obligations (Details) (2.125% Notes) - USD ($)
$ in Millions
Dec. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Principal $ 1,629  
Unamortized debt discount associated with 2.125% Notes 286 $ 308
Total debt (net) 1,395 1,435
2.125% Convertible Senior Notes Due 2026    
Debt Instrument [Line Items]    
Principal 805 805
Unamortized debt discount associated with 2.125% Notes 286 308
Unamortized debt issuance costs (12) (14)
Total debt (net) 507 483
Carrying amount of the equity component, net $ 305 $ 305