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Summary of Significant Accounting Policies (Segment Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 29, 2017 | Oct. 30, 2016 | Jul. 31, 2016 | May 01, 2016 | Jan. 31, 2016 | Nov. 01, 2015 | Aug. 02, 2015 | May 03, 2015 | Jan. 29, 2017 | Jan. 31, 2016 | Feb. 01, 2015
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales | $ 22,207 | $ 23,154 | $ 26,472 | $ 22,762 | $ 20,980 | $ 21,819 | $ 24,829 | $ 20,891 | $ 94,595 | $ 88,519 | $ 83,176
% of Net Sales |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
Indoor Garden [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 9,204 | $ 8,227 | $ 7,486
% of Net Sales |  |  |  |  |  |  |  |  | 9.70% | 9.30% | 9.00%
Paint [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 7,666 | $ 7,497 | $ 7,342
% of Net Sales |  |  |  |  |  |  |  |  | 8.10% | 8.50% | 8.80%
Kitchen and Bath [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 7,184 | $ 6,909 | $ 6,639
% of Net Sales |  |  |  |  |  |  |  |  | 7.60% | 7.80% | 8.00%
Appliances [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 7,362 | $ 6,539 | $ 5,718
% of Net Sales |  |  |  |  |  |  |  |  | 7.80% | 7.40% | 6.90%
Plumbing [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,985 | $ 6,364 | $ 5,755
% of Net Sales |  |  |  |  |  |  |  |  | 7.40% | 7.20% | 6.90%
Lumber [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,828 | $ 6,284 | $ 6,054
% of Net Sales |  |  |  |  |  |  |  |  | 7.20% | 7.10% | 7.30%
Outdoor Garden [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,789 | $ 6,505 | $ 6,319
% of Net Sales |  |  |  |  |  |  |  |  | 7.20% | 7.30% | 7.60%
Building Materials [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,774 | $ 6,416 | $ 6,068
% of Net Sales |  |  |  |  |  |  |  |  | 7.20% | 7.20% | 7.30%
Tools [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,668 | $ 6,060 | $ 5,388
% of Net Sales |  |  |  |  |  |  |  |  | 7.00% | 6.80% | 6.50%
Flooring [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,477 | $ 6,215 | $ 6,011
% of Net Sales |  |  |  |  |  |  |  |  | 6.80% | 7.00% | 7.20%
Electrical [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 6,090 | $ 5,837 | $ 5,656
% of Net Sales |  |  |  |  |  |  |  |  | 6.40% | 6.60% | 6.80%
Hardware [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 5,629 | $ 5,296 | $ 4,975
% of Net Sales |  |  |  |  |  |  |  |  | 6.00% | 6.00% | 6.00%
Millwork [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 5,139 | $ 4,937 | $ 4,707
% of Net Sales |  |  |  |  |  |  |  |  | 5.40% | 5.60% | 5.70%
Decor [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 2,906 | $ 2,730 | $ 2,554
% of Net Sales |  |  |  |  |  |  |  |  | 3.10% | 3.10% | 3.10%
Lighting [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 2,894 | $ 2,703 | $ 2,504
% of Net Sales |  |  |  |  |  |  |  |  | 3.10% | 3.10% | 3.00%
OUTSIDE UNITED STATES [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 8,000 | $ 8,000 | $ 8,500
Long-Lived Assets | 2,400 |  |  |  | 2,300 |  |  |  | 2,400 | 2,300 |
UNITED STATES [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 86,600 | 80,500 | $ 74,700
Long-Lived Assets | $ 19,500 |  |  |  | $ 19,900 |  |  |  | $ 19,500 | $ 19,900 |

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