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Related Parties (Schedule of Related Party Transactions) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 30, 2020
Nov. 01, 2019
Oct. 30, 2020
Nov. 01, 2019
Jan. 31, 2020
Related Party Transaction [Line Items]          
Unearned Revenue $ 9,235   $ 9,235   $ 9,268
Dell          
Related Party Transaction [Line Items]          
Customer deposits 209   209   194
Dell | Reseller revenue          
Related Party Transaction [Line Items]          
Revenue and Receipts 927 $ 780 2,738 $ 2,223  
Unearned Revenue 4,159   4,159   3,787
Dell | Internal-use revenue          
Related Party Transaction [Line Items]          
Revenue and Receipts 16 37 50 60  
Unearned Revenue 28   28   $ 57
Dell | Collaborative technology project receipts          
Related Party Transaction [Line Items]          
Revenue and Receipts 4 2 9 7  
Dell | Purchases and leases of products and purchases of services          
Related Party Transaction [Line Items]          
Related party costs 49 61 138 196  
Dell | Dell subsidiary support and administrative costs          
Related Party Transaction [Line Items]          
Related party costs $ 12 $ 27 $ 54 $ 91