XML 14 R33.htm IDEA: XBRL DOCUMENT v3.3.1.900
Taxes On Earnings (Details) - USD ($)
$ in Millions
9 Months Ended
Oct. 31, 2015
Jan. 31, 2015
Nov. 01, 2014
Income Tax Contingency [Line Items]      
Unrecognized tax benefits $ 103.4 $ 101.7 $ 101.1
Income tax penalties and interest accrued 20.3 $ 23.6 $ 23.4
Impact of recognizing taxes and interest related to unrecognized tax benefits 52.1    
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations $ 10.1    
Earliest Tax Year [Member] | Internal Revenue Service [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2012    
Earliest Tax Year [Member] | State [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2010    
Latest Tax Year [Member] | Internal Revenue Service [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2014    
Latest Tax Year [Member] | State [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2014