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Leases additional information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Nov. 02, 2019
Nov. 02, 2019
Feb. 02, 2019
Leases [Abstract]      
Operating Leases, Income Statement, Sublease Revenue     $ 12
Latest Lease Expiration Date 2040    
Operating Lease, Right-of-Use Asset $ 341 $ 797  
Minimum Lease Commitment Signed Not Yet Commenced $ 186 $ 186  
Operating Lease, Weighted Average Remaining Lease Term 8 years 8 months 12 days 8 years 8 months 12 days  
Operating Lease, Weighted Average Discount Rate, Percent 4.70% 4.70%