Property and Leases - Schedule of assets and liabilities related to operating and finance leases (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 03, 2020	Feb. 02, 2020
Assets
Operating lease assets	$ 5,634	$ 5,595
Finance lease assets	1,191	934
Total lease assets	6,825	6,529
Current:
Operating lease liabilities	853	828
Finance lease liabilities	99	84
Long-term:
Operating lease liabilities	5,075	5,066
Finance lease liabilities	1,326	1,081
Total lease liabilities	7,353	7,059
Finance lease asset accumulated amortization	$ 670	$ 644