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Leases - Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 01, 2020
Aug. 03, 2019
Aug. 01, 2020
Aug. 03, 2019
Leases        
Operating lease expense $ 16   $ 32  
Variable lease cost 8   16  
Total lease cost $ 24 $ 24 $ 48 $ 49
Weighted average remaining lease term 6 years 2 months 12 days   6 years 2 months 12 days  
Weighted average discount rate (as a percent) 4.40%   4.40%  
Cash paid for lease liabilities     $ 21 $ 35