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Stockholders' Equity (Stock-Based Compensation Expense) (Details)
$ in Millions
12 Months Ended
Nov. 01, 2020
USD ($)
Nov. 03, 2019
USD ($)
employees
Nov. 04, 2018
USD ($)
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 1,976 $ 2,185 [1] $ 1,227
Estimated income tax benefits for stock-based compensation 345 400 195
Income tax benefits for stock-based awards exercised or released 147 232 181
Unrecognized compensation cost related to unvested stock-based awards $ 4,021    
Unrecognized compensation cost, Remaining weighted-average service period expected to be recognized 3 years 4 months 24 days    
Cost of products sold      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 109 120 77
Cost of subscriptions and services      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 50 43 9
Research and development      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 1,419 1,532 855
Selling, general and administrative      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 398 490 $ 286
Restricted Stock Units (RSUs)      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based awards, Annualized forfeiture rate 5.00%    
Multi-Year Equity Awards      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 902 890  
Modified Awards      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based awards, Incremental compensation cost from plan modification   $ 140  
Stock-based awards, Number of employees affected by plan modification | employees   16,500  
CA Technologies, Inc.      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Restructuring charges for accelerated vesting of assumed equity awards held by employees terminated in connection with CA Merger   $ 75  
[1] Fiscal year 2019 stock-based compensation expense does not include $75 million restructuring charges for accelerated vesting of assumed equity awards held by employees terminated in connection with the CA Merger.