Net Sales and Segment Reporting (Revenue from External Customers by Products and Services) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Feb. 03, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	Feb. 03, 2019	Jan. 28, 2018	Jan. 29, 2017
Revenue from External Customer [Line Items]
Net Sales	$ 26,491	$ 26,302	$ 30,463	$ 24,947	$ 23,883	$ 25,026	$ 28,108	$ 23,887	$ 108,203	$ 100,904	$ 94,595
% of Net Sales									100.00%	100.00%	100.00%
Major Product Line - Building Materials [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 39,967	$ 37,331	$ 34,768
Product [Member]
Revenue from External Customer [Line Items]
Net Sales									102,933	95,956	90,028
Service [Member]
Revenue from External Customer [Line Items]
Net Sales									5,270	4,948	4,567
Appliances [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 9,001	$ 8,146	$ 7,366
% of Net Sales									8.30%	8.10%	7.80%
Building Materials [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 7,772	$ 7,272	$ 6,785
% of Net Sales									7.20%	7.20%	7.20%
Decor [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 3,580	$ 3,174	$ 3,011
% of Net Sales									3.30%	3.10%	3.20%
Major Product Line - Decor [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 36,238	$ 33,583	$ 31,599
Major Product Line - Hardlines [Member]
Revenue from External Customer [Line Items]
Net Sales									31,998	29,990	28,228
Electrical [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 5,576	$ 4,994	$ 4,524
% of Net Sales									5.20%	4.90%	4.80%
Flooring [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 7,475	$ 6,980	$ 6,410
% of Net Sales									6.90%	6.90%	6.80%
Hardware [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 6,194	$ 5,874	$ 5,617
% of Net Sales									5.70%	5.80%	5.90%
Indoor Garden [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 10,438	$ 9,777	$ 9,190
% of Net Sales									9.60%	9.70%	9.70%
Kitchen And Bath [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 7,721	$ 7,276	$ 7,103
% of Net Sales									7.10%	7.20%	7.50%
Lighting [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 4,436	$ 4,448	$ 4,468
% of Net Sales									4.10%	4.40%	4.70%
Lumber [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 8,388	$ 7,790	$ 6,828
% of Net Sales									7.80%	7.70%	7.20%
Millwork [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 5,743	$ 5,383	$ 5,139
% of Net Sales									5.30%	5.30%	5.40%
Outdoor Garden [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 7,257	$ 6,988	$ 6,762
% of Net Sales									6.70%	6.90%	7.10%
Paint [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 8,461	$ 8,007	$ 7,709
% of Net Sales									7.80%	7.90%	8.10%
Plumbing [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 8,052	$ 7,444	$ 7,024
% of Net Sales									7.40%	7.40%	7.40%
Tools [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 8,109	$ 7,351	$ 6,659
% of Net Sales									7.50%	7.30%	7.00%