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Income taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Tax Credit Carryforward [Line Items] |  |  |
Additional valuation allowance amount | $ 7.9 |  |
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount | 7.9 | $ 2.1 | $ (9.8)
Undistributed earnings of certain foreign subsidiaries | 27.7 | 0.0 |
Unrecognized deferred income tax liability | 8.1 |  |
Penalties and interest accrued related to income tax liabilities | 5.0 | 4.6 |
Reasonably possible decrease in amount of unrecognized tax benefits | 1.3 |  |
Utilization of tax attributes, annual limitation | 70.6 |  |
Utilization of tax attributes, cumulative limitation | $ 405.0 |  |
Foreign Tax Jurisdiction |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount |  | $ 2.1 |

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- Definition Tax Attributes Annual Utilization Limit + References No definition available. + Details
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482603/740-30-50-2 + Details
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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