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Acquisitions and Divestitures - Additional Information (Details)
3 Months Ended 6 Months Ended
Oct. 26, 2019
USD ($)
acquisition
Oct. 27, 2018
USD ($)
Jul. 25, 2020
USD ($)
Business Acquisition [Line Items]      
Number of business combinations (acquisition) | acquisition 4    
Acquired cash and cash equivalents $ 10,000,000    
Goodwill, expected tax deductible 0    
Acacia Communications, Inc. | Forecast      
Business Acquisition [Line Items]      
Payment consideration to acquire business, net of cash and marketable securities     $ 2,600,000,000
General and administrative      
Business Acquisition [Line Items]      
Acquisition related costs $ 5,000,000 $ 10,000,000