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Fair Value Measurements (Range Of Input Assumptions) (Details) - Recurring Measurements [Member] - Level 3 [Member]
9 Months Ended
Oct. 29, 2016
Oct. 31, 2015
Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Discount rate 12.00% 12.00%
Monthly payment rate 6.00% 6.00%
Annual credit loss rate 3.00% 1.00%
Annual revenues as a percent to credit card receivables 14.00% 6.00%
Annual expenses as a percent to credit card receivables 5.00% 2.00%
Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Discount rate 12.00% 12.00%
Monthly payment rate 11.00% 33.00%
Annual credit loss rate 4.00% 4.00%
Annual revenues as a percent to credit card receivables 18.00% 18.00%
Annual expenses as a percent to credit card receivables 9.00% 9.00%