Annual report pursuant to Section 13 and 15(d)

Segments and Disaggregated Revenue - Narrative (Details)

v3.20.4
Segments and Disaggregated Revenue - Narrative (Details)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 01, 2020
USD ($)
store
Feb. 02, 2019
USD ($)
Jan. 30, 2021
USD ($)
distribution_center
province
store
state
segment
Feb. 01, 2020
USD ($)
store
Feb. 02, 2019
USD ($)
Oct. 31, 2020
store
Aug. 01, 2020
store
May 02, 2020
store
Nov. 02, 2019
store
Aug. 03, 2019
store
May 04, 2019
store
Segment Reporting Information [Line Items]                      
Number of retail discount stores | store 15,288   15,685 15,288   15,606 15,479 15,370 15,262 15,115 15,264
Number of states/provinces the Company operates in | state     48                
Number of reporting business segments | segment     2                
Goodwill transfers       $ 0.0              
Goodwill impairment     $ 0.0 313.0 $ 2,727.0            
Dollar Tree                      
Segment Reporting Information [Line Items]                      
Goodwill transfers     $ 0.0 47.6              
Goodwill impairment       0.0              
Family Dollar                      
Segment Reporting Information [Line Items]                      
Number of distribution centers | distribution_center     11                
Goodwill transfers     $ (47.6) (47.6)              
Goodwill impairment $ 313.0 $ 2,730.0   $ 313.0              
Canada                      
Segment Reporting Information [Line Items]                      
Number of states/provinces the Company operates in | province     5                
Canada | Dollar Tree                      
Segment Reporting Information [Line Items]                      
Number of distribution centers | distribution_center     2