SEGMENT INFORMATION - Net Sales for Each Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 31, 2016	Nov. 01, 2015	Aug. 02, 2015	May. 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Aug. 03, 2014	May. 04, 2014	Jan. 31, 2016	Feb. 01, 2015	Feb. 02, 2014
SEGMENT INFORMATION
Net Sales	$ 1,648	$ 2,012	$ 2,006	$ 1,722	$ 1,543	$ 1,914	$ 1,880	$ 1,633	$ 7,388	$ 6,970	$ 6,387
Corporate & Other
SEGMENT INFORMATION
Net Sales									455	463	448
Facilities Maintenance | Operating segments
SEGMENT INFORMATION
Net Sales									2,690	2,510	2,331
Waterworks | Operating segments
SEGMENT INFORMATION
Net Sales									2,510	2,427	2,227
Construction & Industrial - White Cap | Operating segments
SEGMENT INFORMATION
Net Sales									$ 1,733	$ 1,570	$ 1,381