OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax ⓘCompanies tag every number in their SEC filings with a standard name. This page collects every value 3M CO reported under this one.us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.