Accounts receivable - Portfolio of Accounts Receivable (Details) - USD ($) $ in Millions	May 04, 2019	Feb. 02, 2019	May 05, 2018
Receivables [Abstract]
Accounts receivable, held for investment	$ 15.3	$ 19.5	$ 6.8
Accounts receivable, held for sale	7.8	4.2	484.6
Accounts receivable	$ 23.1	$ 23.7	$ 491.4

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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- References

No definition available.

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- Definition

The face amount of all receivables that will be sold to other entities, including trade and loan receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
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