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Accrued Warranties (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 29, 2017
Jun. 30, 2017
Changes in warranty liability    
Balance at June 30, 2017 $ 26  
Warranty provision for sales 3  
Settlements (4)  
Balance at September 29, 2017 25  
Advance payments and unearned income    
Product Warranty Liability [Line Items]    
Extended product warranty accrual $ 21 $ 23