Document and Entity Information
| Document and Entity Information | Aug. 12, 2024 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 12, 2024 |
| Entity Registrant Name | INTEGRATED RAIL AND RESOURCES ACQUISITION CORP. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-41048 |
| Entity Tax Identification Number | 86-2581754 |
| Entity Address Address Line 1 | 400 W. Morse Boulevard |
| Entity Address Address Line 2 | Suite 220 |
| Entity Address City Or Town | Winter Park |
| Entity Address State Or Province | FL |
| Entity Address Postal Zip Code | 32789 |
| City Area Code | 321 |
| Local Phone Number | 972-1583 |
| Written Communications | true |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001854795 |
| Common Class A [Member] | |
| Entity Listings [Line Items] | |
| Security 12b Title | Units, each consisting of one share of Class A common stock, par value $0.0001 per share, and one-half of one redeemable warrant |
| Trading Symbol | IRRXU |
| Security Exchange Name | NONE |
| Shares of Class A common stock, par value $0.0001 per share [Member] | |
| Entity Listings [Line Items] | |
| Security 12b Title | Class A common stock, par value $0.0001 |
| Trading Symbol | IRRX |
| Security Exchange Name | NONE |
| Warrants [Member] | |
| Entity Listings [Line Items] | |
| Security 12b Title | Warrants |
| Trading Symbol | IRRXW |
| Security Exchange Name | NONE |