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 9 Months Ended
Oct. 31, 2020
Nov. 02, 2019
Oct. 31, 2020
Nov. 02, 2019
Disaggregation of Revenue [Line Items]        
Net sales $ 6,177.0 $ 5,746.2 $ 18,741.4 $ 17,295.5
Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales 3,303.2 3,074.3 9,557.6 8,991.4
Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 2,873.5 $ 2,671.9 $ 9,183.5 $ 8,304.1
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 $ 1,564.1 $ 1,555.8 $ 4,778.8 $ 4,567.6
Consumable | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 2,255.7 $ 2,133.9 $ 7,077.5 $ 6,481.1
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 47.40% 50.60% 50.00% 50.80%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 78.50% 79.90% 77.10% 78.00%
Variety | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 1,520.9 $ 1,328.3 $ 4,473.0 $ 4,127.1
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 46.00% 43.20% 46.80% 45.90%
Seasonal | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 218.2 $ 190.2 $ 305.8 $ 296.7
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 6.60% 6.20% 3.20% 3.30%
Home Products | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 240.1 $ 196.3 $ 802.7 $ 642.6
Home Products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 8.30% 7.30% 8.70% 7.70%
Apparel And Accessories | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 157.4 $ 144.0 $ 517.8 $ 494.3
Apparel And Accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 5.50% 5.40% 5.60% 6.00%
Seasonal And Electronics | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 220.3 $ 197.7 $ 785.5 $ 686.1
Seasonal And Electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 7.70% 7.40% 8.60% 8.30%