| Document and Entity Information | Jan. 24, 2024 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 24, 2024 |
| Entity Registrant Name | CRH PUBLIC LTD CO |
| Entity Incorporation State Country Code | L2 |
| Entity File Number | 001-32846 |
| Entity Tax Identification Number | 98-0366809 |
| Entity Address Address Line 1 | Stonemason’s Way |
| Entity Address Address Line 2 | 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 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Ordinary Shares of €0.32 each |
| Trading Symbol | CRH |
| Security Exchange Name | NYSE |
| Unsecured Debt [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 6.40% Notes due 2033 |
| Trading Symbol | CRH/33A |
| Security Exchange Name | NYSE |
