Cover - USD ($)	12 Months Ended
	Dec. 31, 2023	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-32846
Entity Registrant Name	CRH public limited company
Entity Tax Identification Number	98-0366809
Entity Address, Address Line One	Stonemason’s Way
Entity Address, Address Line Two	Rathfarnham
Entity Address, City or Town	Dublin
Entity Address, Postal Zip Code	D16 KH51
Entity Address, Country	IE
Country Region	+353
City Area Code	1
Local Phone Number	404 1000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float		$ 40,589,313,781
Entity Common Stock, Shares Outstanding	690,357,372
Documents Incorporated by Reference	None
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Central Index Key	0000849395
Entity Incorporation, State or Country Code	L2
Auditor Name	Deloitte Ireland LLP
Auditor Location	Dublin, Ireland
Auditor Firm ID	1193
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Ordinary Shares
Trading Symbol	CRH
Security Exchange Name	NYSE
Six Point Four Percent Notes Due 2033
Document Information [Line Items]
Title of 12(b) Security	6.40% notes due 2033
Trading Symbol	CRH/33A
Security Exchange Name	NYSE