Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES (Narrative) (Details)

v3.8.0.1
COMMITMENTS AND CONTINGENCIES (Narrative) (Details)
ft² in Millions
 1 Months Ended 3 Months Ended
Aug. 31, 2017
plantiff
Jul. 31, 2017
plantiff
Jun. 30, 2017
USD ($)
May 31, 2017
ft²
option
Jun. 30, 2016
plantiff
Apr. 30, 2016
USD ($)
Feb. 03, 2018
USD ($)
letter_of_credit
Operating Lease Commitments [Abstract]              
Expected future minimum sublease rentals             $ 900,000
Letters of Credit [Abstract]              
Letters of Credit Outstanding, Number | letter_of_credit             3
Letter of Credit Reimbursement and Security Agreement capacity             $ 120,000,000
Second Letter of Credit Reimbursement and Security Agreement amount             110,000,000
Third Letter of Credit Reimbursement and Security Agreement Amount             100,000,000
Committed to letters of credit             168,000,000
Stand-by letters of credit             158,200,000
Surety Bonds [Abstract]              
Surety bonds             86,200,000
Build-to-Suit Lease and Related Bonds              
Area of distribution center to be constructed under the Missouri Lease (sq ft) | ft²       1.0      
Number of options to extend the Missouri Lease term | option       2      
Term of optional extension to the Missouri Lease       10 years      
Costs capitalized in construction in progress related to the Distribution Center Project             53,700,000
Dollar Tree Resolved Matters              
Settlement received             35,000,000
Failure To Reimburse Employees For Clothing Constituting Uniforms In Violation Of California Law [Member]              
Dollar Tree Resolved Matters              
Number of plaintiffs that have filed suit | plantiff   2          
Failure To Remit Overtime Compensation, Breaks, Accurate Wage Statements, And Final Pay Upon Termination [Member]              
Dollar Tree Resolved Matters              
Number of plaintiffs that have filed suit | plantiff 43            
Discriminatory Practices Case [Member]              
Dollar Tree Resolved Matters              
Number of plaintiffs that have filed suit | plantiff         30,000    
Minimum [Member] | Fair Credit Reporting Act Violation [Member]              
Dollar Tree/Family Dollar Active Matters              
Statutory damages sought by plaintiff per violation           $ 100  
Maximum [Member] | Fair Credit Reporting Act Violation [Member]              
Dollar Tree/Family Dollar Active Matters              
Statutory damages sought by plaintiff per violation           $ 1,000  
Telecom Contracts [Member]              
Communications and Information Technology [Abstract]              
Total commitment             $ 130,300,000
Settled Litigation [Member] | Suit Against Sycamore Partners And Dollar Express [Member]              
Dollar Tree Resolved Matters              
Damages sought (in excess of)     $ 52,000,000        
Settlement received     35,000,000        
Sycamore Partners And Dollar Express LLC [Member] | Settled Litigation [Member] | Sycamore Partners And Dollar Express Countersuit Against Dollar Tree [Member]              
Dollar Tree Resolved Matters              
Damages sought (in excess of)     $ 500,000,000