{"cik":2044112,"taxonomy":"us-gaap","tag":"EarningsPerShareBasic","label":"Earnings Per Share, Basic","description":"The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.","entityName":"INTEGRATED RAIL & RESOURCES INC.","units":{"USD/shares":[{"start":"2025-01-01","end":"2025-12-31","val":-3.6,"accn":"0001213900-26-038031","fy":2025,"fp":"FY","form":"10-K","filed":"2026-04-01"},{"start":"2025-01-01","end":"2025-12-31","val":-3.6,"accn":"0001213900-26-041196","fy":null,"fp":null,"form":"S-1","filed":"2026-04-08","frame":"CY2025"},{"start":"2026-01-01","end":"2026-03-31","val":-0.05,"accn":"0001213900-26-057909","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-15","frame":"CY2026Q1"}]}}