GOODWILL AND INTANGIBLE ASSETS - Goodwill - Carrying Amount by Reporting Unit (Details) - USD ($) $ in Millions	Jan. 29, 2017	Jan. 31, 2016
Goodwill by reporting unit
Gross Goodwill	$ 3,788	$ 3,788
Accumulated Impairments	(919)	(919)
Net Goodwill	2,869	2,869
Reportable segment \| Facilities Maintenance
Goodwill by reporting unit
Gross Goodwill	1,603	1,603
Net Goodwill	1,603	1,603
Reportable segment \| Waterworks
Goodwill by reporting unit
Gross Goodwill	1,877	1,877
Accumulated Impairments	(815)	(815)
Net Goodwill	1,062	1,062
Reportable segment \| Construction & Industrial
Goodwill by reporting unit
Gross Goodwill	183	183
Accumulated Impairments	(74)	(74)
Net Goodwill	109	109
Corporate \| Home Improvement Solutions
Goodwill by reporting unit
Gross Goodwill	125	125
Accumulated Impairments	(30)	(30)
Net Goodwill	$ 95	$ 95

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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