regulatory asset or liability for rate-regulated entities

Liabilities4

1. 410-10Overall410 Asset Retirement and Environmental Obligations

   ASC 410-10 is a purely navigational "Overall" subtopic within the Asset Retirement and Environmental Obligations Topic. Its sole purpose is to explain the difference between Subtopic 410-20 (asset retirement obligations, the associated asset retirement cost, and environmental remediation liabilities arising from normal operation of a long-lived asset) and Subtopic 410-30 (environmental remediation liabilities generally). It contains no independent recognition or measurement rules.

2. 410-20Asset Retirement Obligations410 Asset Retirement and Environmental Obligations

   ASC 410-20 governs legal obligations associated with the retirement of tangible long-lived assets that arise from acquisition, construction, development, and/or normal operation of the asset, including environmental remediation resulting from normal operations. An entity recognizes the fair value of the ARO liability in the period incurred if fair value can be reasonably estimated, and simultaneously capitalizes an equal asset retirement cost in the carrying amount of the related long-lived asset (410-20-25-4; 410-20-25-5). Fair value is normally measured with an expected present value technique discounted at a credit-adjusted risk-free rate, with later changes recognized as accretion expense and as revisions to estimated cash flows (410-20-30-1; 410-20-35-3).

3. 410-30Environmental Obligations410 Asset Retirement and Environmental Obligations

   ASC 410-30 governs accounting for environmental remediation liabilities — obligations to clean up pollution arising from past acts under Superfund (CERCLA), RCRA corrective-action provisions, or analogous state/non-U.S. laws. Applied site by site, it uses the loss contingency model of ASC 450-20: accrue when it is probable a liability has been incurred (litigation/claim asserted or probably will be, and an unfavorable outcome probable) and the amount (or a minimum in a range) is reasonably estimable, measured as the entity's allocable share of the joint and several liability plus amounts other PRPs won't pay. Remediation costs are generally expensed as a component of operating income, with narrow capitalization exceptions and separate recognition of probable third-party recoveries as assets.

4. 410-980Regulated Operations410 Asset Retirement and Environmental Obligations

   ASC 410-980 explains how rate-regulated entities apply the asset retirement obligation (ARO) model of Subtopic 410-20. Because rate regulation may allow recovery of retirement costs on a timing pattern different from GAAP ARO cost recognition, a regulated entity that meets the requirements of Topic 980 recognizes a regulatory asset or regulatory liability for that timing difference. Capitalized asset retirement cost is included in long-lived asset impairment testing on the same basis as for any other entity.