SEGMENT REPORTING (Details) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jan. 30, 2016
USD ($)
|
Oct. 31, 2015
USD ($)
|
Aug. 01, 2015
USD ($)
|
May. 02, 2015
USD ($)
|
Jan. 31, 2015
USD ($)
|
Nov. 01, 2014
USD ($)
|
Aug. 02, 2014
USD ($)
|
May. 03, 2014
USD ($)
|
Jan. 30, 2016
USD ($)
|
Jan. 31, 2015
USD ($)
|
Feb. 01, 2014
USD ($)
|
|
| Segment Reporting Information [Line Items] | |||||||||||
| Depreciation and amortization | $ 487,700,000 | $ 206,000,000 | $ 190,700,000 | ||||||||
| Goodwill, Transfers | $ 121,800,000 | ||||||||||
| Number of retail discount stores | 13,800 | ||||||||||
| Goodwill | $ 5,021,700,000 | $ 164,600,000 | $ 5,021,700,000 | 164,600,000 | |||||||
| Assets | 15,901,200,000 | 3,492,700,000 | 15,901,200,000 | 3,492,700,000 | |||||||
| Operating Income (Loss) | 469,700,000 | $ 223,700,000 | $ 123,400,000 | $ 232,800,000 | 383,600,000 | $ 219,700,000 | $ 205,000,000 | $ 231,900,000 | 1,049,700,000 | 1,040,200,000 | 970,300,000 |
| Gross profit | 1,652,600,000 | 1,400,000,000 | 855,200,000 | 748,900,000 | 918,100,000 | 725,300,000 | 694,100,000 | 696,600,000 | 4,656,700,000 | 3,034,000,000 | 2,789,800,000 |
| Net sales | 5,365,300,000 | $ 4,945,200,000 | $ 3,011,200,000 | $ 2,176,700,000 | 2,475,600,000 | $ 2,095,200,000 | $ 2,031,100,000 | $ 2,000,300,000 | $ 15,498,400,000 | 8,602,200,000 | 7,840,300,000 |
| Number of states stores operating in | 48 | ||||||||||
| Number of Canadian provinces | 5 | ||||||||||
| Number of Reportable Segments | 2 | ||||||||||
| Dollar Tree [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Depreciation and amortization | $ 223,400,000 | 206,000,000 | 190,700,000 | ||||||||
| Price Point | $ 1.00 | ||||||||||
| Number of distribution centers | 10 | ||||||||||
| Goodwill | 283,600,000 | 164,600,000 | $ 283,600,000 | 164,600,000 | |||||||
| Assets | 3,472,000,000 | 3,492,700,000 | 3,472,000,000 | 3,492,700,000 | |||||||
| Operating Income (Loss) | 1,080,500,000 | 1,040,200,000 | 970,300,000 | ||||||||
| Gross profit | 3,249,300,000 | 3,034,000,000 | 2,789,800,000 | ||||||||
| Net sales | 9,336,400,000 | 8,602,200,000 | 7,840,300,000 | ||||||||
| Family Dollar [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Depreciation and amortization | $ 264,300,000 | 0 | 0 | ||||||||
| Number of distribution centers | 11 | ||||||||||
| Goodwill | 4,738,100,000 | 0 | $ 4,738,100,000 | 0 | |||||||
| Assets | $ 12,429,200,000 | $ 0 | 12,429,200,000 | 0 | |||||||
| Operating Income (Loss) | (30,800,000) | 0 | 0 | ||||||||
| Gross profit | 1,407,400,000 | 0 | 0 | ||||||||
| Net sales | $ 6,162,000,000 | $ 0 | $ 0 | ||||||||
| Dollar Tree - Canada [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Number of distribution centers | 2 | ||||||||||