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Goodwill and intangibles - Composition of Finite-Lived Intangibles (Details) - USD ($) $ in Millions | May 05, 2018 | Feb. 03, 2018 | Apr. 29, 2017
--- | --- | --- | ---
Intangible assets, net: |  |  |
Gross carrying amount | $ 53.5 | $ 49.8 | $ 48.6
Accumulated amortization | (47.2) | (46.7) | (39.7)
Net carrying amount | 6.3 | 3.1 | 8.9
Intangible assets, gross | 530.1 | 528.2 | 451.6
Accumulated amortization, net | (47.2) | (46.7) | (39.7)
Total intangible assets, net | 343.2 | 481.5 | 411.9
Definite-lived intangible liabilities: |  |  |
Gross carrying amount | (114.1) | (114.5) | (113.5)
Accumulated amortization | 87.1 | 85.2 | 76.2
Total | (27.0) | (29.3) | (37.3)
Trade names |  |  |
Intangible assets, net: |  |  |
Indefinite-lived intangible assets, gross | 476.6 | 478.4 | 403.0
Accumulated amortization | (139.7) |  |
Indefinite-lived intangible assets | $ 336.9 | $ 478.4 | $ 403.0

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