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Fair value measurements - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward or delayed delivery of the underlying instrument with settlement	180 days
Other Assets | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 7.4

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- Definition

Maximum settlement period in case of delayed delivery of underlying instrument.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
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