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Contingencies - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Jun. 29, 2018
Jul. 31, 2018
Oct. 31, 2020
Loss Contingencies [Line Items]      
Payments for legal settlements $ 65,000,000.0    
Release of loss contingency accrual   $ 39,000,000.0  
Litigation settlement, expense   $ 26,000,000.0  
Patent cross-license     7 years
Minimum      
Loss Contingencies [Line Items]      
Potential one-time termination charge     $ 0.0
Maximum      
Loss Contingencies [Line Items]      
Potential one-time termination charge     $ 25,000,000.0