Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

v3.3.1.900
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Millions
 12 Months Ended
Jan. 30, 2016
USD ($)
Jan. 31, 2015
USD ($)
Feb. 01, 2014
USD ($)
Property, Plant and Equipment [Line Items]      
Interest Costs Capitalized $ 1.3    
Number of retail discount stores 13,800    
Number of states stores operating in 48    
Number of Canadian provinces 5    
Money market securities valued at cost, in Cash and cash equivalents $ 462.9 $ 788.6  
Debt instruments with original maturities in months, considered cash equivalents, range maximum (in months) 3 months    
Settlement of debit card and credit card transaction process business days, range maximum (in business days) 3 months    
Warehousing and distribution costs capitalized into inventory $ 114.0 44.3  
Software amortization period (in years) 3 years    
Deferred Finance Costs, Noncurrent, Net   74.3  
Accrued deferred financing costs $ 0.0 58.4  
Restricted investments 82.0 78.9  
Short-term Investments 4.0 0.0  
Deferred Compensation Plan Assets 21.1 5.5  
Impairment charge for certain store assets 1.6 1.5 $ 0.5
Fair value of diesel fuel swap 0.8 5.7  
Advertising costs 32.5 18.1 14.9
Stock-based compensation expense $ 52.3 37.4 $ 36.2
Buildings [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 39 years    
Buildings [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 40 years    
Furniture, fixtures and equipment [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 3 years    
Furniture, fixtures and equipment [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 15 years    
Long-term debt - Secured Senior Notes and Acquisition Notes [Member]      
Property, Plant and Equipment [Line Items]      
Long-term Debt, Fair Value $ 3,754.6    
Long-term debt - term loans [Member]      
Property, Plant and Equipment [Line Items]      
Long-term Debt, Fair Value $ 3,886.1    
Senior Notes [Member]      
Property, Plant and Equipment [Line Items]      
Long-term Debt, Fair Value   $ 700.9