joint and several liability

Liabilities2

1. 405-40Obligations Resulting from Joint and Several Liability Arrangements405 Liabilities

   ASC 405-40 governs how an entity recognizes, measures, and discloses obligations arising from joint and several liability arrangements when the total amount of the obligation is fixed at the reporting date (e.g., debt with co-obligors, settled litigation shared with other defendants). The core measurement rule is that the reporting entity records the amount it agreed to pay under its arrangement with co-obligors plus any additional amount it expects to pay on behalf of those co-obligors. Scope excludes obligations already covered by Topics 410, 450, 460, 715, and 740.

2. 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.