Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 01, 2020	Nov. 03, 2019	Nov. 01, 2020	Nov. 03, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 33,536	$ 27,223	$ 99,849	$ 84,443
Products
Disaggregation of Revenue [Line Items]
Net sales	32,312	25,887	96,607	80,599
Services
Disaggregation of Revenue [Line Items]
Net sales	1,224	1,336	3,242	3,844
Building Materials
Disaggregation of Revenue [Line Items]
Net sales	12,594	10,299	34,966	30,198
Décor
Disaggregation of Revenue [Line Items]
Net sales	11,213	9,383	32,309	28,178
Hardlines
Disaggregation of Revenue [Line Items]
Net sales	9,729	7,541	32,574	26,067
In the U.S.
Disaggregation of Revenue [Line Items]
Net sales	30,845	24,995	92,468	77,634
Outside the U.S.
Disaggregation of Revenue [Line Items]
Net sales	$ 2,691	$ 2,228	$ 7,381	$ 6,809