Segment Reporting Information, by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Feb. 02, 2013		Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012		Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013		Jan. 28, 2012		Jan. 29, 2011
Segment Reporting Information [Line Items]
Total sales	$ 1,513.3		$ 716.2	$ 853.9	$ 900.0	$ 1,353.8		$ 710.5	$ 797.6	$ 887.3	$ 3,983.4		$ 3,749.2		$ 3,437.4
Total operating income											560.5		507.4		372.5
Total depreciation and amortization											99.4		92.4		97.8
Total capital additions											134.2		97.8		57.5
Total assets	3,715.8					3,611.4					3,715.8		3,611.4
Total long-lived assets	455.0					383.4					455.0		383.4
Total liabilities	(1,385.9)					(1,332.3)					(1,385.9)		(1,332.3)
US
Segment Reporting Information [Line Items]
Total sales											3,273.9		3,034.1		2,744.2
Total operating income											547.8		478.0		342.7
Total depreciation and amortization											75.9		69.0		72.5
Total capital additions											111.1		75.6		44.5
Total assets	3,018.8					2,747.5					3,018.8		2,747.5
Total long-lived assets	377.7					305.8					377.7		305.8
Total liabilities	(1,243.6)					(1,166.3)					(1,243.6)		(1,166.3)
UNITED KINGDOM
Segment Reporting Information [Line Items]
Total sales											709.5		715.1		693.2
Total operating income											40.0		56.1		57.0
Total depreciation and amortization											23.5		23.4		25.3
Total capital additions											23.1		22.2		13.0
Total assets	446.7					427.3					446.7		427.3
Total long-lived assets	76.8					77.0					76.8		77.0
Total liabilities	(113.7)					(146.2)					(113.7)		(146.2)
Unallocated
Segment Reporting Information [Line Items]
Total operating income											(27.3)	[1]	(26.7)	[1]	(27.2)	[1]
Total assets	250.3	[2]				436.6	[2]				250.3	[2]	436.6	[2]
Total long-lived assets	0.5	[1]				0.6	[1]				0.5	[1]	0.6	[1]
Total liabilities	$ (28.6)	[1]				$ (19.8)	[1]				$ (28.6)	[1]	$ (19.8)	[1]

[1] Unallocated principally relates to corporate administrative costs, assets, and liabilities.

[2] Unallocated principally relates to corporate administrative costs, assets, and liabilities. The asset balance in Fiscal 2012 primarily consisted of cash which has subsequently been utilized for the repurchase of common shares.