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Revenue recognition - ESP and Voucher Promotions (Details) - USD ($) $ in Millions | May 04, 2019 | Feb. 02, 2019 | May 05, 2018
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Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Total deferred revenue | $ 976.6 | $ 966.5 | $ 952.4
Deferred revenue | 277.0 | 270.0 | 284.9
Non-current liabilities | 699.6 | 696.5 | 667.5
ESP deferred revenue |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Total deferred revenue | 931.3 | 927.6 | 913.5
Voucher promotions and other |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Total deferred revenue | $ 45.3 | $ 38.9 | $ 38.9

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