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Revenue recognition - ESP Deferred Revenue Rollforward (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Aug. 02, 2025 | Aug. 03, 2024 | Aug. 02, 2025 | Aug. 03, 2024
Change in Contract with Customer, Liability [Roll Forward] |  |  |  |
ESP deferred revenue, beginning of period |  |  | $ 1,247.6 |
Plans sold |  |  | (3.1) | $ (22.1)
ESP deferred revenue, end of period | $ 1,246.2 | $ 1,221.8 | 1,246.2 | 1,221.8
ESP deferred revenue |  |  |  |
Change in Contract with Customer, Liability [Roll Forward] |  |  |  |
ESP deferred revenue, beginning of period | 1,171.9 | 1,153.7 | 1,170.8 | 1,158.7
Plans sold | 132.4 | 117.0 | 267.4 | 238.9
Revenue recognized | (133.8) | (124.6) | (267.7) | (251.5)
ESP deferred revenue, end of period | 1,170.5 | 1,146.1 | 1,170.5 | 1,146.1
Extended Service Plan and other deferred revenue |  |  |  |
Change in Contract with Customer, Liability [Roll Forward] |  |  |  |
Revenue recognized | $ (77.5) | $ (75.0) | $ (165.1) | $ (160.2)

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