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Income taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 30, 2021 | Jan. 29, 2022 | Jan. 30, 2021 | Feb. 01, 2020 | Feb. 02, 2019
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Statutory tax rate (percent) |  | 21.00% | 21.00% | 21.00% |
Income tax benefit, two year carryforward |  |  | $ 74.0 |  |
Income tax benefit, five year carryforward | $ 12.4 |  | 26.4 |  |
Valuation allowance |  | $ 27.9 | 83.9 |  |
Capital loss carryforwards |  | 16.9 | 13.9 |  |
Decrease in valuation allowance |  | 56.0 |  |  |
Unrecognized tax benefits |  | 24.9 | 25.4 | $ 23.5 | $ 18.1
Accrued interest related to unrecognized tax benefits |  | 4.5 |  |  |
Accrued penalties |  | 0.6 |  |  |
Increase resulting from settlements with taxing authorities |  | 27.9 |  |  |
Alternative Minimum Tax Credit Carryforward |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Tax credit carryforward, amount |  | 40.5 |  |  |
State and Local Jurisdiction |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Income tax benefit related to release of valuation allowance |  | 49.8 |  |  |
Valuation allowance |  |  | 49.8 |  |
Domestic Tax Authority |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Net operating loss carry forwards |  | 17.9 |  |  |
Capital loss carryforwards |  | 2.7 |  |  |
Internal Revenue Service (IRS) |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Net operating loss carry forwards |  | 9.3 |  |  |
Foreign Tax Authority |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Net operating loss carry forwards |  | 23.9 |  |  |
Deferred tax assets |  | 2.1 |  |  |
Foreign capital loss carry forward |  | $ 14.2 | $ 11.2 |  |
Bermuda |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Statutory tax rate (percent) |  | 0.00% |  |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 + Details
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- Definition Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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