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Defined contribution and defined benefit retirement - Summary of Actuarial Assumptions Used to Benefit Obligations (Detail) - Pension Plans Defined Benefit [Member] - Non U.S. | Dec. 31, 2023 | Dec. 31, 2022
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Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Discount rate | 3.40% | 3.90%
Increase in future compensation levels | 2.70% | 2.70%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Pension plans postretirement and other employee benefits. + References No definition available. + Details
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