Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.22.0.1
Summary of Significant Accounting Policies (Details)
store in Thousands
 3 Months Ended 12 Months Ended
Feb. 01, 2020
USD ($)
Jan. 29, 2022
USD ($)
distribution_center
province
segment
store
state
Jan. 30, 2021
USD ($)
Feb. 01, 2020
USD ($)
Feb. 02, 2019
USD ($)
Property, Plant and Equipment [Line Items]          
Number of retail discount stores | store   16      
Number of states/provinces the Company operates in | state   48      
Number of reporting business segments | segment   2      
Money market securities valued at cost, in cash and cash equivalents   $ 680,600,000 $ 1,135,000,000    
Warehousing and distribution costs capitalized into inventory   203,200,000 172,700,000    
Interest costs capitalized   1,100,000 3,200,000 $ 2,400,000  
Operating lease right-of-use assets   6,425,300,000 6,324,100,000   $ 6,200,000,000
Operating lease liabilities   6,553,300,000     6,100,000,000
Stockholders' equity $ (6,254,800,000) (7,718,500,000) (7,285,300,000) (6,254,800,000) (5,642,900,000)
Amortization expense, net   38,500,000 48,100,000    
Amortization expense, net       52,900,000  
Impairment charge for certain store assets   4,400,000 4,600,000 9,100,000  
Operating lease, impairment loss   3,900,000 3,800,000 8,500,000  
Goodwill impairment   0 0 313,000,000.0  
Impairment of indefinite lived intangible assets   0 0 0  
Advertising costs   93,900,000 80,800,000 102,900,000  
Stock-based compensation expense   79,900,000 83,900,000 61,400,000  
Family Dollar          
Property, Plant and Equipment [Line Items]          
Goodwill impairment 313,000,000        
Cumulative goodwill impairment charges   $ 3,040,000,000      
Cumulative Effect, Period of Adoption, Adjustment          
Property, Plant and Equipment [Line Items]          
Stockholders' equity         65,300,000
Buildings | Minimum          
Property, Plant and Equipment [Line Items]          
Useful life (in years)   39 years      
Buildings | Maximum          
Property, Plant and Equipment [Line Items]          
Useful life (in years)   40 years      
Furniture, fixtures and equipment | Minimum          
Property, Plant and Equipment [Line Items]          
Useful life (in years)   3 years      
Furniture, fixtures and equipment | Maximum          
Property, Plant and Equipment [Line Items]          
Useful life (in years)   15 years      
Software Development          
Property, Plant and Equipment [Line Items]          
Useful life (in years)   3 years      
Dollar Tree          
Property, Plant and Equipment [Line Items]          
Merchandise fixed price   $ 1.25      
Family Dollar          
Property, Plant and Equipment [Line Items]          
Number of distribution centers | distribution_center   11      
Canada          
Property, Plant and Equipment [Line Items]          
Number of states/provinces the Company operates in | province   5      
Canada | Dollar Tree          
Property, Plant and Equipment [Line Items]          
Number of distribution centers | distribution_center   2      
United States | Dollar Tree          
Property, Plant and Equipment [Line Items]          
Number of distribution centers | distribution_center   15      
Retained Earnings          
Property, Plant and Equipment [Line Items]          
Stockholders' equity $ (3,837,800,000) $ (6,507,600,000) $ (5,179,700,000) $ (3,837,800,000) (3,076,100,000)
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment          
Property, Plant and Equipment [Line Items]          
Stockholders' equity         $ 65,300,000