Fair value - Measurement inputs (Details)	Jun. 30, 2026 term
Measurement Input, Discount Rate [Member] \| Ekumen
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration, measurement input	0.124
Measurement Input, Discount Rate [Member] \| Mobile Computing S.A.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration, measurement input	0.085
Measurement Input, Credit Spread [Member] \| Ekumen
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration, measurement input	0.016
Measurement Input, Credit Spread [Member] \| Mobile Computing S.A.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration, measurement input	0.018

Value of input used to measure liability in contingent consideration arrangement in business combination.

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Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant