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Segments and Disaggregated Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 02, 2024 | Oct. 28, 2023 | Nov. 02, 2024 | Oct. 28, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 7,561.7 | $ 7,309.1 | $ 22,560.8 | $ 21,948.7
Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 4,338.0 | 4,003.8 | 12,569.1 | 11,808.9
Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 3,223.7 | $ 3,305.3 | $ 9,991.7 | $ 10,139.8
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 | $ 2,164.0 | $ 1,939.3 | $ 6,314.4 | $ 5,707.4
Consumable | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 2,638.8 | $ 2,711.0 | $ 8,086.2 | $ 8,166.4
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 49.90% | 48.40% | 50.20% | 48.30%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 81.90% | 82.00% | 80.90% | 80.50%
Variety | Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 1,846.6 | $ 1,745.5 | $ 5,746.7 | $ 5,590.9
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 42.60% | 43.60% | 45.70% | 47.40%
Seasonal | Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 327.4 | $ 319.0 | $ 508.0 | $ 510.6
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 7.50% | 8.00% | 4.10% | 4.30%
Home Products | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 207.7 | $ 214.7 | $ 638.1 | $ 677.2
Home Products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 6.40% | 6.50% | 6.40% | 6.70%
Apparel And Accessories | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 154.8 | $ 156.5 | $ 486.9 | $ 494.1
Apparel And Accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 4.80% | 4.70% | 4.90% | 4.90%
Seasonal And Electronics | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 222.4 | $ 223.1 | $ 780.5 | $ 802.1
Seasonal And Electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 6.90% | 6.80% | 7.80% | 7.90%

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