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Summary of Significant Accounting Policies - Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 03, 2018
Jan. 28, 2017
Lessor, Lease, Description [Line Items]    
Deferred Rent Credit, Current $ 30 $ 33
Deferred Rent Credit, Noncurrent $ 107 121
Large-format stores [Member]    
Lessor, Lease, Description [Line Items]    
Term of Lease Agreements, Low End of Range 10 years  
Term of Lease Agreements, High End of Range 20 years  
Maximum [Member] | Small-format stores [Member]    
Lessor, Lease, Description [Line Items]    
Lessor, Operating Lease, Term of Contract 3 years  
Long-term Debt [Member]    
Lessor, Lease, Description [Line Items]    
Financing lease obligations $ 191 $ 177