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Statements of Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized Cost | $ 163.8 | $ 163.9
Allowance for Credit Loss | $ 0.3 | $ 0.5
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 600,000,000 | 600,000,000
Common Stock, Shares, Outstanding | 392,129,866 | 391,760,051
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Preferred Stock, Shares Authorized | 20,000,000 | 20,000,000
Preferred Stock, Shares Outstanding | 440,000 | 440,000

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