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Income taxes - Changes in Uncertain Tax Positions (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Unrecognized tax benefits: |  |
DeferredIncomeTaxExpenseBenefitNonCash | $ 1.0 | $ 1.1
Lapse due to applicable statute of limitations | $ (0.2) |

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from expiration of certain statutes of limitations + References No definition available. + Details
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