Segment information - Narrative (Details) $ in Millions |
3 Months Ended | 9 Months Ended | |||
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Sep. 30, 2026
USD ($)
Country
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Sep. 30, 2025
USD ($)
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Sep. 30, 2026
USD ($)
segment
Country
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Sep. 30, 2025
USD ($)
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Sep. 30, 2026
country
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| Segment Reporting [Line Items] | |||||
| Number of countries in which entity operates | 100 | 100 | 100 | ||
| Number of operating segments | segment | 4 | ||||
| Number of Reportable Segments | segment | 4 | ||||
| Other items not allocated to segments | |||||
| Segment Reporting [Line Items] | |||||
| Incident-related losses | $ (26.6) | $ 0.0 | $ (26.6) | $ 0.0 | |
| Other items not allocated to segments | Rest of World | |||||
| Segment Reporting [Line Items] | |||||
| Incident-related losses | (19.6) | ||||
| Other items not allocated to segments | North America | |||||
| Segment Reporting [Line Items] | |||||
| Incident-related losses | (7.0) | ||||
| Other items not allocated to segments | Non-Routine Legal Matters | |||||
| Segment Reporting [Line Items] | |||||
| Loss contingencies | $ 0.3 | $ 0.0 | $ 3.2 | $ 0.0 | |
| Subsidiaries | |||||
| Segment Reporting [Line Items] | |||||
| Number of countries in which entity operates | Country | 51 | 51 | |||
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- Definition Incident-related losses No definition available.
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- Definition Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The number of countries in which the entity operates as of balance sheet date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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