{"cik":1970743,"taxonomy":"us-gaap","tag":"IntangibleAssetsNetExcludingGoodwill","label":"Intangible Assets, Net (Excluding Goodwill)","description":"Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.","entityName":"RMX INDUSTRIES, INC.","units":{"USD":[{"end":"2025-12-31","val":30048702,"accn":"0001213900-26-058772","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-15","frame":"CY2025Q4I"},{"end":"2026-03-31","val":30038839,"accn":"0001213900-26-058772","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-15","frame":"CY2026Q1I"}]}}