Annual report pursuant to Section 13 and 15(d)

Segment Reporting - Disaggregation of Revenue (Details)

v3.20.1
Segment Reporting - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 01, 2020
Nov. 02, 2019
Aug. 03, 2019
May 04, 2019
Feb. 02, 2019
Nov. 03, 2018
Aug. 04, 2018
May 05, 2018
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Disaggregation of Revenue [Line Items]                      
Total net sales $ 6,315.3 $ 5,746.2 $ 5,740.6 $ 5,808.7 $ 6,205.2 $ 5,538.8 $ 5,525.6 $ 5,553.7 $ 23,610.8 $ 22,823.3 $ 22,245.5
Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 12,507.9 11,712.1 11,164.4
Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 11,102.9 $ 11,111.2 $ 11,081.1
Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 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%
Consumable | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 6,155.3 $ 5,703.8 $ 5,470.6
Consumable | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 8,604.7 $ 8,466.7 $ 8,344.1
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 49.20% 48.70% 49.00%
Consumable | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 77.50% 76.20% 75.30%
Variety | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 5,732.1 $ 5,457.8 $ 5,169.1
Variety | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 45.80% 46.60% 46.30%
Seasonal | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 620.5 $ 550.5 $ 524.7
Seasonal | Product Concentration Risk | Revenue, Segment Benchmark | Dollar Tree                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 5.00% 4.70% 4.70%
Home products | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 866.0 $ 911.1 $ 930.8
Home products | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 7.80% 8.20% 8.40%
Apparel and accessories | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 644.0 $ 700.0 $ 731.3
Apparel and accessories | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 5.80% 6.30% 6.60%
Seasonal and electronics | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 988.2 $ 1,033.4 $ 1,074.9
Seasonal and electronics | Product Concentration Risk | Revenue, Segment Benchmark | Family Dollar                      
Disaggregation of Revenue [Line Items]                      
Concentration risk percentage                 8.90% 9.30% 9.70%