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				9 Months Ended
	Oct. 28, 2012		Oct. 30, 2011		Oct. 28, 2012		Oct. 30, 2011
Segment Reporting Information [Line Items]
Net Sales	$ 2,146		$ 1,893		$ 6,041		$ 5,376
Adjusted EBITDA	204		155		529		406
Depreciation & Software Amortization	24	[1]	21	[1]	71	[1]	64	[1]
Other Intangible Amortization	61		61		181		183
Facilities Maintenance
Segment Reporting Information [Line Items]
Net Sales	587		497		1,655		1,441
Adjusted EBITDA	112		87		306		254
Depreciation & Software Amortization	9	[1]	8	[1]	28	[1]	22	[1]
Other Intangible Amortization	21		18		59		56
Water Works
Segment Reporting Information [Line Items]
Net Sales	553		490		1,541		1,373
Adjusted EBITDA	42		37		109		91
Depreciation & Software Amortization	3	[1]	1	[1]	7	[1]	3	[1]
Other Intangible Amortization	24		24		72		71
Power Solutions
Segment Reporting Information [Line Items]
Net Sales	468		429		1,323		1,239
Adjusted EBITDA	21		17		55		43
Depreciation & Software Amortization	2	[1]	1	[1]	5	[1]	3	[1]
Other Intangible Amortization	5		5		14		15
White Cap
Segment Reporting Information [Line Items]
Net Sales	318		277		891		748
Adjusted EBITDA	22		13		48		17
Depreciation & Software Amortization	3	[1]	2	[1]	9	[1]	10	[1]
Other Intangible Amortization	5		5		15		15
Other, Corporate, & Eliminations
Segment Reporting Information [Line Items]
Net Sales	220		200		631		575
Adjusted EBITDA	7		1		11		1
Depreciation & Software Amortization	7	[1]	9	[1]	22	[1]	26	[1]
Other Intangible Amortization	$ 6		$ 9		$ 21		$ 26

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