{"cik":2107724,"taxonomy":"us-gaap","tag":"Assets","label":"Assets","description":"Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","entityName":"METALS ACQUISITION CORP. II","units":{"USD":[{"end":"2025-12-31","val":132072,"accn":"0001213900-26-055808","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-13","frame":"CY2025Q4I"},{"end":"2026-03-31","val":232670545,"accn":"0001213900-26-055808","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-13","frame":"CY2026Q1I"}]}}