Non-controlling Interests - Summary of Non-Controlling Interest in Subsidiaries (Detail)	12 Months Ended
Dec. 31, 2022
Republic Cement & Building Materials, Inc. and Republic Cement Land & Resources Inc. [member]
Disclosure of noncontrolling interests [line items]
Economic ownership interest held by non-controlling interest	45.00%

Economic ownership interest held by non-controlling interest.

No definition available.

Name:	crh_EconomicOwnershipInterestHeldByNoncontrollingInterest
Namespace Prefix:	crh_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration