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Revenue recognition - ESP (Details) - USD ($) $ in Millions	Nov. 01, 2025	Aug. 02, 2025	Feb. 01, 2025	Nov. 02, 2024	Aug. 03, 2024	Feb. 03, 2024
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 1,228.8		$ 1,247.6	$ 1,202.0
Current liabilities	350.4		362.5	337.7
Non-current liabilities	878.4		885.1	864.3
ESP deferred revenue
Disaggregation of Revenue [Line Items]
Total deferred revenue	1,160.6	$ 1,170.5	1,170.8	1,132.7	$ 1,146.1	$ 1,158.7
Other Deferred Revenue
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 68.2		$ 76.8	$ 69.3

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