Loans, overdrafts and long-term debt - Summary (Details) - USD ($) $ in Millions	Feb. 01, 2020	Feb. 02, 2019
Debt Instrument [Line Items]
Total debt	$ 613.1	$ 734.0
Less: Current portion of loans and overdrafts	(95.6)	(78.8)
Less: Unamortized capitalized debt issuance fees	(1.6)	(5.6)
Total long-term debt	515.9	649.6
Other loans and bank overdrafts
Debt Instrument [Line Items]
Total debt	95.6	40.1
Senior Notes, net of unamortized discount \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total debt	147.5	399.0
Term Loan Facility \| Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Total debt	$ 0.0	$ 294.9

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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