Income taxes - Summary of Activity of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
Reconciliation of Unrecognized Tax Benefits
Unrecognized tax benefits, beginning of period	$ 25.4	$ 23.5	$ 18.1
Increases related to current year tax positions	2.0	1.0	2.0
Increases related to prior year tax positions	0.4	3.4	6.0
Lapse of statute of limitations	(2.9)	(2.6)	(2.6)
Difference on foreign currency translation	0.0	0.1	0.0
Unrecognized tax benefits, end of period	$ 24.9	$ 25.4	$ 23.5

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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-Publisher FASB
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Amount of increase in unrecognized tax benefits resulting from foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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