Revenue - Summary (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 27,302	$ 20,992	$ 46,977	$ 38,733
Net sales (in percent)	100.00%	100.00%	100.00%	100.00%
United States
Disaggregation of Revenue [Line Items]
Net sales	$ 25,561	$ 19,447	$ 44,321	$ 36,094
International
Disaggregation of Revenue [Line Items]
Net sales	1,741	1,545	2,656	2,639
Products
Disaggregation of Revenue [Line Items]
Net sales	26,359	19,976	45,380	36,877
Services
Disaggregation of Revenue [Line Items]
Net sales	508	591	907	1,144
Other
Disaggregation of Revenue [Line Items]
Net sales	435	425	690	712
Hardlines
Disaggregation of Revenue [Line Items]
Net sales	$ 10,091	$ 7,188	$ 16,524	$ 12,743
Net sales (in percent)	37.00%	34.00%	35.00%	33.00%
Home Decor
Disaggregation of Revenue [Line Items]
Net sales	$ 8,681	$ 7,036	$ 15,613	$ 13,372
Net sales (in percent)	32.00%	33.00%	33.00%	34.00%
Building Products
Disaggregation of Revenue [Line Items]
Net sales	$ 7,971	$ 6,206	$ 13,920	$ 11,605
Net sales (in percent)	29.00%	30.00%	30.00%	30.00%
Other
Disaggregation of Revenue [Line Items]
Net sales	$ 559	$ 562	$ 920	$ 1,013
Net sales (in percent)	2.00%	3.00%	2.00%	3.00%