SEGMENT REPORTING (Details) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Feb. 03, 2018
USD ($)
|
Jan. 28, 2017
USD ($)
|
Oct. 29, 2016
USD ($)
|
Jul. 30, 2016
USD ($)
|
Apr. 30, 2016
USD ($)
|
Oct. 31, 2015
USD ($)
|
Aug. 01, 2015
USD ($)
|
May 02, 2015
USD ($)
|
Oct. 29, 2016
segment
|
Feb. 03, 2018
USD ($)
state
province
distribution_center
|
Jan. 28, 2017
USD ($)
|
Jan. 30, 2016
USD ($)
|
|
| Segment Reporting Information [Line Items] | ||||||||||||
| Number of retail discount stores | 14,800 | |||||||||||
| Number of U.S. States, stores operating in | state | 48 | |||||||||||
| Number of Canadian provinces | province | 5 | |||||||||||
| Number of reportable Segments | segment | 2 | |||||||||||
| Net sales | $ 6,360,600,000 | $ 5,635,300,000 | $ 5,316,600,000 | $ 5,281,200,000 | $ 5,287,100,000 | $ 5,001,600,000 | $ 4,996,300,000 | $ 5,085,800,000 | $ 22,245,500,000 | $ 20,719,200,000 | $ 15,498,400,000 | |
| Gross profit | 2,101,000,000 | 1,807,000,000 | 1,666,000,000 | 1,627,800,000 | 1,627,100,000 | 1,520,500,000 | 1,512,400,000 | 1,554,600,000 | 7,021,900,000 | 6,394,700,000 | 4,656,700,000 | |
| Depreciation and amortization expense | 611,500,000 | 637,800,000 | 487,700,000 | |||||||||
| Operating income | 765,600,000 | 586,500,000 | $ 425,200,000 | $ 419,500,000 | $ 388,800,000 | $ 342,400,000 | $ 357,200,000 | $ 418,700,000 | 1,999,100,000 | 1,704,800,000 | 1,049,700,000 | |
| Assets | 16,332,800,000 | 15,701,600,000 | 16,332,800,000 | 15,701,600,000 | ||||||||
| Goodwill | 5,025,200,000 | 5,023,500,000 | 5,025,200,000 | 5,023,500,000 | ||||||||
| Goodwill transfers | 60,000,000 | |||||||||||
| Dollar Tree [Member] | ||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||
| Price point | 1.00 | |||||||||||
| Net sales | 11,164,400,000 | 10,138,700,000 | 9,336,400,000 | |||||||||
| Gross profit | 3,998,500,000 | 3,584,700,000 | 3,249,300,000 | |||||||||
| Depreciation and amortization expense | 251,800,000 | 241,300,000 | 223,400,000 | |||||||||
| Operating income | 1,481,900,000 | 1,305,300,000 | 1,080,500,000 | |||||||||
| Assets | 4,113,400,000 | 3,705,500,000 | 4,113,400,000 | 3,705,500,000 | ||||||||
| Goodwill | 347,100,000 | 345,400,000 | $ 347,100,000 | 345,400,000 | ||||||||
| Dollar Tree [Member] | UNITED STATES | ||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||
| Number of distribution centers | distribution_center | 11 | |||||||||||
| Dollar Tree [Member] | CANADA | ||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||
| Number of distribution centers | distribution_center | 2 | |||||||||||
| Family Dollar [Member] | ||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||
| Number of distribution centers | distribution_center | 11 | |||||||||||
| Net sales | $ 11,081,100,000 | 10,580,500,000 | 6,162,000,000 | |||||||||
| Gross profit | 3,023,400,000 | 2,810,000,000 | 1,407,400,000 | |||||||||
| Depreciation and amortization expense | 359,700,000 | 396,500,000 | 264,300,000 | |||||||||
| Operating income | 517,200,000 | 399,500,000 | $ (30,800,000) | |||||||||
| Assets | 12,219,400,000 | 11,996,100,000 | 12,219,400,000 | 11,996,100,000 | ||||||||
| Goodwill | $ 4,678,100,000 | $ 4,678,100,000 | $ 4,678,100,000 | $ 4,678,100,000 | ||||||||