This series is constructed as a sum of Allowance for Loan and Lease Losses call item RCFD3123 and Allocated Transfer Risk Reserves call item RCFD3128.
For more information and definition about the specific call item codes, please see http://www.federalreserve.gov/apps/mdrm/data-dictionary.
This series is calculated by the Federal Reserve Bank of St. Louis using raw data that are collected by the FFIEC. Raw data can be found at https://cdr.ffiec.gov/public/.
Federal Financial Institutions Examination Council (US), Loan Loss Reserves for Commercial Banks in United States [USLLR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/USLLR, March 24, 2018.