Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 02, 2020	Aug. 04, 2019	Aug. 02, 2020	Aug. 04, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 38,053	$ 30,839	$ 66,313	$ 57,220
Products
Disaggregation of Revenue [Line Items]
Net sales	36,990	29,480	64,295	54,712
Services
Disaggregation of Revenue [Line Items]
Net sales	1,063	1,359	2,018	2,508
Building Materials
Disaggregation of Revenue [Line Items]
Net sales	12,556	10,495	22,372	19,899
Décor
Disaggregation of Revenue [Line Items]
Net sales	11,790	10,050	21,096	18,795
Hardlines
Disaggregation of Revenue [Line Items]
Net sales	13,707	10,294	22,845	18,526
In the U.S.
Disaggregation of Revenue [Line Items]
Net sales	35,205	28,186	61,623	52,639
Outside the U.S.
Disaggregation of Revenue [Line Items]
Net sales	$ 2,848	$ 2,653	$ 4,690	$ 4,581