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Summary of Long-lived Assets by Geographic Areas (Detail) - USD ($)
$ in Thousands
Aug. 04, 2019
Jul. 29, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 2,311,662 $ 1,130,485
US    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 2,146,995 1,077,547
Non-US [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 164,667 $ 52,938