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Pension Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Apr. 01, 2011
Mar. 31, 2011
Jul. 31, 2010
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Defined Benefit Plan Disclosure [Line Items]            
Estimated actuarial loss       $ 3.2 $ 2.6 $ 4.8
Estimated prior service credit       1.6 1.0 1.0
Accumulated benefit obligation       197.5 187.9  
Defined benefit plans, contribution       13.7 14.4  
Percentage contribution by employer 50.00% 25.00% 25.00% 50.00%    
Percentage of limited employee salary deferrals 6.00%   6.00% 6.00%    
Defined contribution plan - UK employees
           
Defined Benefit Plan Disclosure [Line Items]            
Contributions       0.7 0.6 0.4
Defined contribution 401(k) retirement savings plan - US employees
           
Defined Benefit Plan Disclosure [Line Items]            
Contributions       6.5 5.4 1.2
Defined compensation plan - US
           
Defined Benefit Plan Disclosure [Line Items]            
Defined Contribution Cost Recognized       2.1 2.2 0
Equities
           
Defined Benefit Plan Disclosure [Line Items]            
Actual plan asset target allocations       30.00%    
Bonds
           
Defined Benefit Plan Disclosure [Line Items]            
Actual plan asset target allocations       45.00%    
Property
           
Defined Benefit Plan Disclosure [Line Items]            
Actual plan asset target allocations       5.00%    
Diversified Growth Funds
           
Defined Benefit Plan Disclosure [Line Items]            
Actual plan asset target allocations       20.00%    
Next Fiscal Year
           
Defined Benefit Plan Disclosure [Line Items]            
Estimated actuarial loss       2.3    
Estimated prior service credit       (1.5)    
Fiscal Year 2014
           
Defined Benefit Plan Disclosure [Line Items]            
Defined future contributions       $ 5.2