FASB Issues Six Taxonomy Implementation Guides March 20, 2020 The FASB has issued final taxonomy implementation guides on the following topics: Accounting changes. Disclosures about financing receivables and current expected credit losses. Insurance — long-duration contracts. Leases under ASC 842. Retirement benefits — phase 3. Revenue from contracts with customers (including statement presentation of revenue and cost of revenue). For more information, see the taxonomy implementation page on the FASB’s Web site.