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Segment information - Narrative (Details) $ in Millions	3 Months Ended
Segment information - Narrative (Details) $ in Millions	Mar. 31, 2026 USD ($) segment Country	Mar. 31, 2025 USD ($)	Mar. 31, 2026 country
Segment Reporting Information [Line Items]
Number of countries in which entity operates	100		100
Number of operating segments	4
Number of Reportable Segments	4
Other items not allocated to segments \| Non-Routine Legal Matters
Segment Reporting Information [Line Items]
Loss contingencies \| $	$ 2.8	$ 0.0
Subsidiaries
Segment Reporting Information [Line Items]
Number of countries in which entity operates \| Country	51