Quarterly report pursuant to Section 13 or 15(d)

Segments and Disaggregated Revenue - Disaggregation of Revenue (Details)

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Segments and Disaggregated Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Aug. 03, 2024
Jul. 29, 2023
Aug. 03, 2024
Jul. 29, 2023
Disaggregation of Revenue [Line Items]        
Net sales $ 7,372.7 $ 7,320.1 $ 14,999.1 $ 14,639.6
Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales 4,065.5 3,873.4 8,231.1 7,805.1
Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 3,307.2 $ 3,446.7 $ 6,768.0 $ 6,834.5
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 $ 2,058.4 $ 1,880.9 $ 4,150.4 $ 3,768.1
Consumable | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 2,652.7 $ 2,741.9 $ 5,447.4 $ 5,455.4
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 50.60% 48.50% 50.40% 48.30%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 80.20% 79.60% 80.50% 79.80%
Variety | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 1,992.1 $ 1,981.8 $ 3,900.1 $ 3,845.4
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 49.00% 51.20% 47.40% 49.30%
Seasonal | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Net sales $ 15.0 $ 10.7 $ 180.6 $ 191.6
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 0.40% 0.30% 2.20% 2.40%
Home Products | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 203.2 $ 223.0 $ 430.4 $ 462.5
Home Products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 6.10% 6.50% 6.40% 6.80%
Apparel And Accessories | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 167.8 $ 174.4 $ 332.1 $ 337.6
Apparel And Accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 5.10% 5.00% 4.90% 4.90%
Seasonal And Electronics | Family Dollar        
Disaggregation of Revenue [Line Items]        
Net sales $ 283.5 $ 307.4 $ 558.1 $ 579.0
Seasonal And Electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 8.60% 8.90% 8.20% 8.50%