Net Sales Adjusted EBITDA and Other Measures for Each of Reportable Segments and Total Continuing Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 29, 2012		Jul. 31, 2011		Jul. 29, 2012		Jul. 31, 2011
Segment Reporting Information [Line Items]
Net Sales	$ 2,059		$ 1,875		$ 3,895		$ 3,483
Adjusted EBITDA	192		155		325		251
Depreciation & Software Amortization	24	[1]	21	[1]	47	[1]	43	[1]
Other Intangible Amortization	60		61		120		122
Facilities Maintenance
Segment Reporting Information [Line Items]
Net Sales	571		507		1,068		944
Adjusted EBITDA	109		95		194		167
Depreciation & Software Amortization	10	[1]	7	[1]	19	[1]	14	[1]
Other Intangible Amortization	19		19		38		38
Water Works
Segment Reporting Information [Line Items]
Net Sales	527		496		988		883
Adjusted EBITDA	39		33		67		54
Depreciation & Software Amortization	2	[1]	1	[1]	4	[1]	2	[1]
Other Intangible Amortization	24		23		48		47
Power Solutions
Segment Reporting Information [Line Items]
Net Sales	440		415		855		810
Adjusted EBITDA	20		14		34		26
Depreciation & Software Amortization	2	[1]	1	[1]	3	[1]	2	[1]
Other Intangible Amortization	4		5		9		10
White Cap
Segment Reporting Information [Line Items]
Net Sales	307		255		573		471
Adjusted EBITDA	18		7		26		4
Depreciation & Software Amortization	3	[1]	4	[1]	6	[1]	8	[1]
Other Intangible Amortization	5		5		10		10
Other, Corporate, & Eliminations
Segment Reporting Information [Line Items]
Net Sales	214		202		411		375
Adjusted EBITDA	6		6		4
Depreciation & Software Amortization	7	[1]	8	[1]	15	[1]	17	[1]
Other Intangible Amortization	$ 8		$ 9		$ 15		$ 17

[1] Depreciation includes amounts recorded within Cost of sales in the Consolidated Statements of Operations and Comprehensive Income (Loss).