Value and Classification Of Fair Value Of UK Plan Assets (Detail) (USD $) In Millions, unless otherwise specified	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Defined Benefit Plan Disclosure [Line Items]
Total	$ 261.1	$ 236.0	$ 216.7
Equities
Defined Benefit Plan Disclosure [Line Items]
Total	73.2	63.5
Diversified Growth Funds
Defined Benefit Plan Disclosure [Line Items]
Total	51.2	44.6
Bonds
Defined Benefit Plan Disclosure [Line Items]
Total	125.1	115.7
Property
Defined Benefit Plan Disclosure [Line Items]
Total	10.4	10.3
Cash
Defined Benefit Plan Disclosure [Line Items]
Total	1.2	1.9
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	250.7	225.7
Fair Value, Inputs, Level 1 | Equities
Defined Benefit Plan Disclosure [Line Items]
Total	73.2	63.5
Fair Value, Inputs, Level 1 | Diversified Growth Funds
Defined Benefit Plan Disclosure [Line Items]
Total	51.2	44.6
Fair Value, Inputs, Level 1 | Bonds
Defined Benefit Plan Disclosure [Line Items]
Total	125.1	115.7
Fair Value, Inputs, Level 1 | Cash
Defined Benefit Plan Disclosure [Line Items]
Total	1.2	1.9
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	10.4	10.3	9.8
Fair Value, Inputs, Level 3 | Property
Defined Benefit Plan Disclosure [Line Items]
Total	$ 10.4	$ 10.3