Cover - USD ($)	12 Months Ended
	Dec. 31, 2024	Feb. 13, 2025	Jun. 28, 2024
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
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			$ 51,283,330,098
Entity Common Stock, Shares Outstanding		676,475,037
Documents Incorporated by Reference	Portions of CRH plc’s proxy statement to be prepared in connection with its 2025 Annual General Meeting (the 'Proxy Statement') are incorporated by reference into Part III of this Annual Report on Form 10-K. CRH plc intends to file the Proxy Statement with the SEC no later than 120 days following December 31, 2024.
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Central Index Key	0000849395
Entity Incorporation, State or Country Code	L2
Common stock
Document Information [Line Items]
Title of 12(b) Security	Ordinary Shares
Trading Symbol	CRH
Security Exchange Name	NYSE
5.200% Guaranteed Notes due 2029
Document Information [Line Items]
Title of 12(b) Security	5.200% Guaranteed Notes due 2029
Trading Symbol	CRH/29
Security Exchange Name	NYSE
5.125% Guaranteed Notes due 2030
Document Information [Line Items]
Title of 12(b) Security	5.125% Guaranteed Notes due 2030
Trading Symbol	CRH/30
Security Exchange Name	NYSE
6.400% Notes due 2033
Document Information [Line Items]
Title of 12(b) Security	6.400% Notes due 2033
Trading Symbol	CRH/33A
Security Exchange Name	NYSE
5.400% Guaranteed Notes due 2034
Document Information [Line Items]
Title of 12(b) Security	5.400% Guaranteed Notes due 2034
Trading Symbol	CRH/34
Security Exchange Name	NYSE
5.500% Guaranteed Notes due 2035
Document Information [Line Items]
Title of 12(b) Security	5.500% Guaranteed Notes due 2035
Trading Symbol	CRH/35
Security Exchange Name	NYSE
5.875% Guaranteed Notes due 2055
Document Information [Line Items]
Title of 12(b) Security	5.875% Guaranteed Notes due 2055
Trading Symbol	CRH/55
Security Exchange Name	NYSE