Retirement Benefit Plans (Asset Allocation) (Details)
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Retirement Benefit Plans [Abstract]    
Equity 53.00% 68.00%
Fixed income 38.00% 22.00%
Real estate, cash and other securities 9.00% 10.00%
Total 100.00% 100.00%
Equity, Target Allocation Minimum 45.00%  
Equity, Target Allocation Maximum 60.00%  
Fixed income, Target Allocation Minimum 35.00%  
Fixed income, Target Allocation Maximum 45.00%  
Real estate, cash and other, Target Allocation Minimum 5.00%  
Real estate, cash and other, Target Allocation Maximum 15.00%  
Defined Benefit Plan, Investment Policies and Strategies Narrative Description