XML 56 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Goodwill and Purchased Intangible Assets, Net - Future Amortization Expense Related to Purchased Intangible Assets (Detail) - USD ($)
$ in Millions
Jan. 26, 2018
Apr. 28, 2017
Acquired Finite Lived Intangible Assets [Line Items]    
Net Assets $ 106 $ 131
Intangible Assets Subject to Amortization    
Acquired Finite Lived Intangible Assets [Line Items]    
Remainder of 2018 12  
2019 47  
2020 31  
2021 16  
Net Assets $ 106