This document provides instructions for filling out a cost audit report in XBRL format using an Excel file. It discusses enabling macros, general guidelines, use of buttons, and the 12 sheets required to complete the XBRL filing. These include sheets for general information, cost accounting policies, quantitative information, operating ratios, related party transactions, and more. Users are advised to validate data and use features like copying text or adding footnotes by right-clicking cells.