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Segment information - Summary of Activity by Segment (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2018 | Aug. 04, 2018 | Jul. 29, 2017 | Aug. 04, 2018 | Jul. 29, 2017 | Feb. 03, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |
Sales |  | $ 1,420.1 | $ 1,399.6 | $ 2,900.7 | $ 2,803.0 |
Operating income (loss) |  | (58.1) | 135.6 | (632.3) | 250.9 |
Total assets |  | 4,740.8 | 6,313.8 | 4,740.8 | 6,313.8 | $ 5,839.6
Proceeds from sale of in-house finance receivables | $ 445.5 |  |  | 445.5 | 0.0 |
Goodwill and intangible impairments |  | 0.0 | 0.0 | 448.7 | 0.0 |
Restructuring costs |  | 19.6 | 0.0 | 26.1 | 0.0 |
North America |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Sales |  | 1,286.7 | 1,262.2 | 2,634.5 | 2,536.6 |
Operating income (loss) |  | (4.2) | 161.6 | (541.5) | 296.4 |
Total assets |  | 4,171.9 | 5,826.3 | 4,171.9 | 5,826.3 | 5,309.0
Goodwill and intangible impairments |  |  |  | 448.7 |  |
Transaction-related costs |  | 19.4 |  | 160.4 |  |
Restructuring costs |  | 53.7 |  | 53.7 |  |
International |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Sales |  | 131.5 | 131.9 | 260.2 | 254.4 |
Operating income (loss) |  | (6.1) | 2.3 | (13.7) | (0.2) |
Total assets |  | 366.6 | 384.8 | 366.6 | 384.8 | 420.3
Inventory charges(1) |  | 3.8 |  |  |  |
Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Sales |  | 1.9 | 5.5 | 6.0 | 12.0 |
Operating income (loss) |  | (47.8) | (28.3) | (77.1) | (45.3) |
Total assets |  | 202.3 | $ 102.7 | 202.3 | $ 102.7 | $ 110.3
Transaction-related costs |  | 4.5 |  | 6.6 |  |
Restructuring costs |  | $ 25.3 |  | $ 31.8 |  |

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