Quarterly report pursuant to Section 13 or 15(d)

Segments - Disaggregation of Revenue (Details)

v3.20.1
Segments - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended
May 02, 2020
May 04, 2019
Disaggregation of Revenue [Line Items]    
Net sales $ 6,286.8 $ 5,808.7
Dollar Tree    
Disaggregation of Revenue [Line Items]    
Net sales 3,077.5 2,959.3
Family Dollar    
Disaggregation of Revenue [Line Items]    
Net sales $ 3,209.3 $ 2,849.4
Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Consumable | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Net sales $ 1,686.5 $ 1,497.4
Consumable | Family Dollar    
Disaggregation of Revenue [Line Items]    
Net sales $ 2,532.1 $ 2,202.6
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 54.80% 50.60%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 78.90% 77.30%
Variety | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Net sales $ 1,311.0 $ 1,358.3
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 42.60% 45.90%
Seasonal | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Net sales $ 80.0 $ 103.6
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 2.60% 3.50%
Home Products | Family Dollar    
Disaggregation of Revenue [Line Items]    
Net sales $ 272.8 $ 242.2
Home Products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 8.50% 8.50%
Apparel And Accessories | Family Dollar    
Disaggregation of Revenue [Line Items]    
Net sales $ 154.1 $ 173.8
Apparel And Accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 4.80% 6.10%
Seasonal And Electronics | Family Dollar    
Disaggregation of Revenue [Line Items]    
Net sales $ 250.3 $ 230.8
Seasonal And Electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar    
Disaggregation of Revenue [Line Items]    
Concentration risk, percentage 7.80% 8.10%