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Net Sales (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 24,947	$ 23,887
Inside the U.S. [Member]
Disaggregation of Revenue [Line Items]
Net sales	23,043
Outside the U.S. [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,904
Product [Member]
Disaggregation of Revenue [Line Items]
Net sales	23,735
Service [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,212
Major Product Line, Building Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales	9,326
Major Product Line, Hardlines [Member]
Disaggregation of Revenue [Line Items]
Net sales	8,415
Major Product Line, Décor [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 7,206

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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