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Fair value measurements - Narrative (Details) $ in Millions | 9 Months Ended
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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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