Defined contribution and defined benefit retirement - Schedule of Defined Benefit Plan Expected Future Payments (Detail) - Pension Plans Defined Benefit [Member] $ in Millions	Dec. 31, 2023 USD ($)
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2024	$ 28.4
2025	28.3
2026	28.7
2027	31.6
2028	35.7
Next 5 years	$ 169.5

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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- Definition

Pension plans postretirement and other employee benefits.

+ References

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