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Leases - Narrative (Details)
$ in Millions
12 Months Ended
Jan. 31, 2020
option
Feb. 01, 2019
USD ($)
Feb. 02, 2018
USD ($)
Lessee, Lease, Description [Line Items]      
Operating lease rent expense | $   $ 616 $ 626
Facility      
Lessee, Lease, Description [Line Items]      
Operating lease renewal term 5 years    
Finance lease renewal term 5 years    
Minimum | Facility      
Lessee, Lease, Description [Line Items]      
Operating lease term 5 years    
Number of options to renew operating lease 4    
Finance lease term 5 years    
Number of options to renew finance lease 4    
Minimum | Equipment      
Lessee, Lease, Description [Line Items]      
Operating lease term 1 year    
Finance lease term 1 year    
Maximum | Facility      
Lessee, Lease, Description [Line Items]      
Operating lease term 20 years    
Number of options to renew operating lease 6    
Finance lease term 20 years    
Number of options to renew finance lease 6    
Maximum | Equipment      
Lessee, Lease, Description [Line Items]      
Operating lease term 7 years    
Finance lease term 7 years