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Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) - USD ($)
$ in Millions
Dec. 28, 2019
Sep. 28, 2019
Dec. 29, 2018
Sep. 14, 2016
Schedule of Investments [Line Items]        
Debt issuance cost, net $ 4   $ 16  
Unamortized debt discount associated with 2.125% Notes $ 73   262  
2.125% Notes        
Schedule of Investments [Line Items]        
Interest rate, stated percentage 2.125% 2.125%   2.125%
Carrying Amount        
Schedule of Investments [Line Items]        
Short-term debt $ 0   136  
Long-term debt, net 486   1,114  
Estimated Fair Value | Level 2        
Schedule of Investments [Line Items]        
Short-term debt 0   136  
Long-term debt, net 1,823   2,428  
2.125% Notes        
Schedule of Investments [Line Items]        
Unamortized debt discount associated with 2.125% Notes $ 73   262  
Interest rate, stated percentage 2.125%      
Carrying amount of the equity component, net $ 95   $ 305