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Supplemental Financial Statement Data - Total Warranty Accrual (Details) - USD ($)
$ in Millions
Dec. 28, 2018
Sep. 28, 2018
Jun. 29, 2018
Dec. 29, 2017
Sep. 29, 2017
Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Current portion $ 183   $ 168      
Long-term portion 154   150      
Total warranty accrual $ 337 $ 323 $ 318 $ 304 $ 302 $ 311