Quarterly report pursuant to Section 13 or 15(d)

Segments - Disaggregation of Revenue (Details)

v3.20.2
Segments - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 01, 2020
Aug. 03, 2019
Aug. 01, 2020
Aug. 03, 2019
Disaggregation of Revenue [Line Items]        
Net sales $ 6,277.6 $ 5,740.6 $ 12,564.4 $ 11,549.3
Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales 3,176.9 2,957.7 6,254.4 5,917.1
Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 3,100.7 $ 2,782.9 $ 6,310.0 $ 5,632.2
Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%
Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%
Consumable | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 1,528.2 $ 1,514.4 $ 3,214.7 $ 3,011.8
Consumable | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 2,289.7 $ 2,144.6 $ 4,821.8 $ 4,347.2
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 48.10% 51.20% 51.40% 50.90%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 73.80% 77.10% 76.40% 77.20%
Variety | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 1,641.1 $ 1,440.4 $ 2,952.1 $ 2,798.8
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 51.70% 48.70% 47.20% 47.30%
Seasonal | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 7.6 $ 2.9 $ 87.6 $ 106.5
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 0.20% 0.10% 1.40% 1.80%
Home Products | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 289.8 $ 204.2 $ 562.6 $ 446.3
Home Products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 9.30% 7.30% 8.90% 7.90%
Apparel And Accessories | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 206.3 $ 176.5 $ 360.4 $ 350.3
Apparel And Accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 6.70% 6.30% 5.70% 6.20%
Seasonal And Electronics | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 314.9 $ 257.6 $ 565.2 $ 488.4
Seasonal And Electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 10.20% 9.30% 9.00% 8.70%