Annual report pursuant to Section 13 and 15(d)

Retirement Benefit Plans (Expense Actuarial Assumptions) (Details)

v2.4.0.6
Retirement Benefit Plans (Expense Actuarial Assumptions) (Details)
0 Months Ended 12 Months Ended
Oct. 15, 2011
May 18, 2009
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Jan. 31, 2009
Expected return on plan assets     7.50% 8.40% 8.40%  
Discount rate 5.06%   5.65% 5.90% 6.86% 6.95%
Salary increase     4.70% 4.70% 4.70%  
Discount rate at remeasurement date October 15, 2011   6.86        
Weighted-Average Actuarial Assumptions Used To Determine Expense [Member]
           
Expected return on plan assets           8.90%