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Stockholders' Equity (Stock-Based Compensation Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 03, 2019
Nov. 04, 2018
Oct. 29, 2017
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 2,185 $ 1,227 $ 920
Estimated income tax benefits for stock-based compensation 400 195 249
Income tax benefits for stock-based awards exercised or released 232 181 273
Unrecognized compensation cost related to unvested stock-based awards $ 5,641    
Unrecognized compensation cost, Remaining weighted-average service period expected to be recognized 4 years 1 month 6 days    
Cost of products sold      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 120 77 64
Cost of subscriptions and services      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 43 9 0
Research and development      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 1,532 855 636
Selling, general and administrative      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 490 $ 286 $ 220
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 $ 890    
Modified Awards [Member]      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based awards, Incremental compensation cost from plan modification 140    
CA Technologies, Inc.      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 83    
Restructuring charges for accelerated vesting of assumed equity awards held by employees terminated in connection with CA Merger 75    
CA Technologies, Inc. | Multi-Year Equity Awards Granted to Employees Acquired      
Employee Service Stock-Based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 133