At December 31, 2020 and 2019, all fixed maturity securities were classified as available-for-sale. The amortized cost and fair values of securities by security type are shown as follows: Allowance for Credit Losses 1 147 December 31, 2019 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions of dollars) United States Government and Government Agencies and Authorities $ 1,246.1  $ 156.0  $ 0.4  $ 1,401.7  States, Municipalities, and Political Subdivisions 2,863.1  507.6  7.3  3,363.4  Foreign Governments 843.5  175.2  1.0  1,017.7  Public Utilities 6,436.7  1,303.7  8.2  7,732.2  Mortgage/Asset-Backed Securities 1,377.8  101.3  0.4  1,478.7  All Other Corporate Bonds 28,273.1  4,211.2  73.9  32,410.4  Redeemable Preferred Stocks 39.0  0.6  —  39.6  Total Fixed Maturity Securities $ 41,079.3  $ 6,455.6  $ 91.2  $ 47,443.7  December 31, 2020 Amortized Cost ACL Gross Unrealized Gain Gross Unrealized Loss Fair Value (in millions of dollars) United States Government and Government Agencies and Authorities $ 559.0  $ —  $ 150.8  $ —  $ 709.8  States, Municipalities, and Political Subdivisions 3,609.9  —  652.8  1.5  4,261.2  Foreign Governments 902.9  —  266.5  1.2  1,168.2  Public Utilities 5,486.4  —  1,481.9  6.0  6,962.3  Mortgage/Asset-Backed Securities 1,019.9  —  88.0  0.2  1,107.7  All Other Corporate Bonds 24,958.8  6.8  5,013.5  46.9  29,918.6  Redeemable Preferred Stocks 9.6  —  —  0.1  9.5  Total Fixed Maturity Securities $ 36,546.5  $ 6.8  $ 7,653.5  $ 55.9  $ 44,137.3  1 Fixed Maturity Securities Note 3 - Investments Unum Group and Subsidiaries NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - Continued