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Supplemental Financial Statement Data - Total Warranty Accrual (Details) - USD ($)
$ in Millions
Mar. 29, 2019
Sep. 28, 2018
Jun. 29, 2018
Mar. 30, 2018
Sep. 29, 2017
Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Current portion $ 179   $ 168      
Long-term portion 152   150      
Total warranty accrual $ 331 $ 337 $ 318 $ 305 $ 304 $ 311