Annual report pursuant to Section 13 and 15(d)

Debt and Other Obligations (Details) (Interest Expense Recognized)

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Debt and Other Obligations (Details) (Interest Expense Recognized) - 2.125% Convertible Senior Notes Due 2026 - USD ($)
$ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Debt Instrument [Line Items]    
Contractual interest expense $ 17 $ 17
Interest cost related to amortization of debt issuance costs 1 2
Interest cost related to amortization of the debt discount $ 24 $ 22