unit of accounting

ASC 350-30 governs the accounting for intangible assets other than goodwill — their recognition when acquired individually or in an asset group, the expensing of internally developed intangibles that are not specifically identifiable, and, for all intangibles (including those from a business combination), their subsequent measurement, impairment, presentation, and disclosure. The core rule is that accounting after acquisition turns on useful life: finite-lived intangibles are amortized over their useful life (residual value presumed zero) and tested for impairment under Subtopic 360-10, while indefinite-lived intangibles are not amortized and are tested for impairment at least annually by comparing fair value with carrying amount.

ASC 605-25 was the legacy guidance on multiple-element (multiple-deliverable) revenue arrangements — how a vendor decided whether deliverables in one contract were separate units of accounting and how to allocate arrangement consideration among them. Every paragraph of the subtopic has been superseded, principally by ASU 2014-09 (Revenue from Contracts with Customers), with a few earlier paragraphs superseded by ASU 2009-13. There is therefore no operative guidance left in 605-25; entities apply ASC 606 (and ASC 340-40) instead.