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Income Taxes (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Jan. 31, 2016
Nov. 04, 2018
Oct. 29, 2017
Oct. 30, 2016
Nov. 01, 2015
Income Tax Contingency [Line Items]          
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   21.00% 17.00% 17.00%  
Deferred Tax Liabilities, Undistributed Foreign Earnings   $ (10,457)      
Provision for (benefit from) income taxes   (8,084) $ 35 $ 642  
Deferred Tax Assets, Valuation Allowance   1,347 1,447    
Deferred Tax Liabilities, Net     9,998    
Unrecognized Tax Benefits, Period Increase (Decrease) $ 1,405 1,774 273    
Unrecognized Tax Benefits   4,030 2,256 1,983 $ 578
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities   4 121 49  
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations   20 12 $ 8  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense   59      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued   190 132    
Unrecognized Tax Benefits that Would Impact Effective Tax Rate   4,220 $ 2,388    
Decrease in Unrecognized Tax Benefits is Reasonably Possible   $ 468      
Pre Tax Reform Tax Rate [Member]          
Income Tax Contingency [Line Items]          
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   35.00%      
Latest Tax Year [Member]          
Income Tax Contingency [Line Items]          
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   21.00%      
Domestic Tax Authority [Member]          
Income Tax Contingency [Line Items]          
Income Tax Holiday, Income Tax Benefits Per Share   $ 1.37 $ 0.56 $ 0.44  
Income Tax Holiday, Aggregate Dollar Amount   $ 590 $ 237 $ 169  
Internal Revenue Service (IRS) [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards   120      
Deferred Tax Assets, Tax Credit Carryforwards, Research   349      
State and Local Jurisdiction [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards   2,434      
Deferred Tax Assets, Tax Credit Carryforwards, Research   1,532      
Foreign Tax Authority [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards   884      
Subject to Annual Limitation [Member] | Internal Revenue Service (IRS) [Member]          
Income Tax Contingency [Line Items]          
Operating Loss Carryforwards   120      
Tax Credit Carryforward, Amount   349      
remeasurement of withholding taxes on undistributed earnings [Member]          
Income Tax Contingency [Line Items]          
Increase (Decrease) in Deferred Income Taxes   (1,162)      
U.S. tax provision on accumulated foreign earnings and profit [Member]          
Income Tax Contingency [Line Items]          
Increase (Decrease) in Deferred Income Taxes   $ 167