XML 60 R47.htm IDEA: XBRL DOCUMENT v3.10.0.1
Supplemental Financial Information - Product Warranty Liabilities (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jan. 25, 2019
Jan. 26, 2018
Jan. 25, 2019
Jan. 26, 2018
Jan. 25, 2019
Apr. 27, 2018
Movement In Standard Product Warranty Accrual [Roll Forward]            
Balance at beginning of period $ 39 $ 44 $ 40 $ 50    
Expense accrued during the period 6 3 16 11    
Warranty costs incurred (6) (6) (17) (20)    
Balance at end of period 39 41 39 41    
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]            
Accrued expenses         $ 25 $ 25
Other long-term liabilities         14 15
Total warranty liabilities $ 39 $ 44 $ 40 $ 50 $ 39 $ 40