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Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jul. 28, 2012
Jul. 30, 2011
Jul. 28, 2012
Jul. 30, 2011
Operating Loss Carryforwards [Line Items]        
The effective tax rate from continuing operations 38.90% 30.70% 39.60% 33.00%
Income Taxes Paid $ 9.6 $ 34.3 $ 79.7 $ 101.6
Tax expense (benefits) from previous fiscal year adjustments $ (0.9)