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Taxes on Earnings (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 30, 2016
Jan. 30, 2016
May 02, 2015
Income Tax Contingency [Line Items]      
Unrecognized tax benefits $ 100.1 $ 94.2 $ 108.1
Income tax penalties and interest accrued 20.3 $ 18.8 $ 25.1
Impact of recognizing taxes and interest related to unrecognized tax benefits 49.4    
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations $ 5.1    
Maximum [Member] | Internal Revenue Service [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2015    
Maximum [Member] | State [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2015    
Minimum [Member] | Internal Revenue Service [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2012    
Minimum [Member] | State [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2011