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Restructuring, Impairment and Disposal Charges (Details) - USD ($)
$ in Millions
 3 Months Ended
Jan. 31, 2021
Feb. 02, 2020
Nov. 01, 2020
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve $ 43 [1]   $ 34
Restructuring charges 75    
Utilization of restructuring reserve (66)    
Restructured Lease Liability 78    
Symantec [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   $ 33  
CA Technologies, Inc.      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   $ 19  
Employee Termination Costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 43 [1]   34
Restructuring charges 61    
Utilization of restructuring reserve (52)    
Leases and Other Exit Costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve [2] 0 [1]   $ 0
Restructuring charges [2] 14    
Utilization of restructuring reserve [2] $ (14)    
[1] (b) We expect the majority of the employee termination costs balance to be paid within the next twelve months.
[2] (a) As of January 31, 2021, $78 million of restructured lease liabilities were included in short-term and long-term lease liabilities.