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Taxes on Earnings (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Income Tax Contingency [Line Items]      
Realized tax benefits related to employee equity programs $ 42,382 $ 29,759 $ 27,661
Reserves for unrecognized tax benefits 94,194 101,696 104,900
Interest related to the reserve for unrecognized tax benefits 18,800 23,600 $ 24,600
Impact of recognizing taxes and interest related to unrecognized tax benefits 45,900    
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations $ 3,700    
Internal Revenue Service [Member] | Earliest [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2012    
Internal Revenue Service [Member] | Latest [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2015    
State [Member]      
Income Tax Contingency [Line Items]      
Tax credit carryforward $ 16,100 $ 12,100  
State [Member] | Earliest [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2011    
State [Member] | Latest [Member]      
Income Tax Contingency [Line Items]      
Open tax year 2015