Variable interest entities - Narrative (Details)	6 Months Ended
Variable interest entities - Narrative (Details)	Jun. 30, 2025
Equity share capital \| VIE (“Philippines Business”)
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage, noncontrolling owner	60.00%
Equity share capital \| Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Variable interest entity, qualitative or quantitative information, ownership percentage	40.00%
Share of earnings and distributions \| VIE (“Philippines Business”)
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage, noncontrolling owner	45.00%
Share of earnings and distributions \| Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Variable interest entity, qualitative or quantitative information, ownership percentage	55.00%

- 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.

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CRH PUBLIC LTD CO 10-Q