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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%

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