On July 28th, the Financial Accounting Standards Board (FASB) issued the proposed Taxonomy Implementation Guide, Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which is based on the 2025 GAAP Financial Reporting Taxonomy. The proposed guide demonstrates the framework for the reporting of the disaggregation of income statement expenses in accordance with the FASB Accounting Standards Codification Subtopic 220-40. The guide is comprised of examples and solely focuses on detail tagging (Level 4).
To improve the process for creating and using XBRL-structured financial statements, the SEC encourages filers, investors, analysts, software service providers, and other interested parties to review the proposed guide and submit comments to the FASB via email to xbrlguide@fasb.org through September 19, 2025.
Sources:
FASB Issues Proposed Taxonomy Implementation Guide for Disaggregation of Income Statement Expenses (sec.gov)
Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (sec.gov)
