| Cover | Oct. 22, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 22, 2024 |
| Entity Registrant Name | CRH public limited company |
| Entity Incorporation, State or Country Code | L2 |
| Entity File Number | 001-32846 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0000849395 |
| Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary Shares of €0.32 each |
| 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 |
| Five Point Two Percent 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 |
| Five Point Four Percent 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 |
