Quarterly report pursuant to Section 13 or 15(d)

SEGMENTS (Details)

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SEGMENTS (Details)
3 Months Ended 6 Months Ended
Aug. 01, 2015
USD ($)
Aug. 02, 2014
USD ($)
Aug. 01, 2015
USD ($)
Aug. 02, 2014
USD ($)
Jan. 31, 2015
USD ($)
Segment Reporting Information [Line Items]          
Number of retail discount stores 13,800        
Number of states stores operating in 48        
Number of Canadian provinces 5        
Number of reportable segments 2        
Net sales $ 3,011,200,000 $ 2,031,100,000 $ 5,187,800,000 $ 4,031,400,000  
Gross Profit 855,200,000 694,100,000 1,604,100,000 1,390,700,000  
Operating Income (Loss) 123,400,000 205,000,000 356,300,000 436,900,000  
Assets 16,565,100,000 3,129,900,000 16,565,100,000 3,129,900,000 $ 3,492,700,000
Dollar Tree          
Segment Reporting Information [Line Items]          
Price Point $ 1.00        
Number of distribution centers 10        
Net sales $ 2,199,600,000 2,031,100,000 4,376,200,000 4,031,400,000  
Gross Profit 749,300,000 694,100,000 1,498,200,000 1,390,700,000  
Operating Income (Loss) 218,400,000 205,000,000 451,300,000 436,900,000  
Assets $ 3,800,800,000 3,129,900,000 3,800,800,000 3,129,900,000 3,492,700,000
Family Dollar          
Segment Reporting Information [Line Items]          
Number of distribution centers 11        
Net sales $ 811,600,000 0 811,600,000 0  
Gross Profit 105,900,000 0 105,900,000 0  
Operating Income (Loss) (95,000,000) 0 (95,000,000) 0  
Assets $ 12,764,300,000 $ 0 $ 12,764,300,000 $ 0 $ 0