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Goodwill and intangibles - Composition of Finite-Lived Intangibles (Details) - USD ($) $ in Millions | Aug. 04, 2018 | Feb. 03, 2018 | Jul. 29, 2017
--- | --- | --- | ---
Intangible assets, net: |  |  |
Gross carrying amount | $ 53.4 | $ 49.8 | $ 49.8
Accumulated amortization | (48.6) | (46.7) | (43.6)
Net carrying amount | 4.8 | 3.1 | 6.2
Accumulated amortization | (139.7) |  |
Intangible assets, gross | 529.6 | 528.2 | 457.5
Accumulated amortization, net | (48.6) | (46.7) | (43.6)
Total intangible assets, net | 341.3 | 481.5 | 413.9
Definite-lived intangible liabilities: |  |  |
Gross carrying amount | (114.0) | (114.5) | (114.5)
Accumulated amortization | 88.8 | 85.2 | 80.5
Total | (25.2) | (29.3) | (34.0)
Trade names |  |  |
Intangible assets, net: |  |  |
Indefinite-lived intangible assets, gross | 476.2 | 478.4 | 407.7
Accumulated amortization | (139.7) |  |
Indefinite-lived intangible assets | $ 336.5 | $ 478.4 | $ 407.7

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