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Income Taxes (Details) (USD $)
3 Months Ended 9 Months Ended
Oct. 28, 2012
Oct. 30, 2011
Oct. 28, 2012
Oct. 30, 2011
Income Taxes        
Income tax expense $ 44,548,000 $ 26,514,000 $ 87,368,000 $ 73,754,000
Effective Income Tax Rate, Continuing Operations 17.60% 13.00% 18.40% 13.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate     35.00%  
Unrecognized Tax Benefits 56,200,000   56,200,000  
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations     $ 5,000,000