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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Fixed income securities, amortized cost | $ 3,187 | $ 3,451
Other Investments | $ 478 | $ 391
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 20,000,000 | 20,000,000
Preferred Stock, Shares Issued | 0 | 0
Preferred Stock, Shares Outstanding | 0 | 0
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 130,000,000 | 130,000,000
Common stock, shares issued | 45,571,743 | 45,365,170
Common Stock, Shares, Outstanding | 45,555,400 | 45,336,278
Treasury stock, shares | 16,343 | 28,892
Fixed Income Securities [Member] |  |
Fixed income securities, amortized cost | $ 2,450 | $ 3,021
Equity investments in pooled funds [Member] |  |
Other Investments | 432 |
Other Investment Not Readily Marketable, Fair Value | 432 | 351
Collateral Pledged [Member] | Fixed Income Securities [Member] |  |
Fixed income securities, amortized cost | 85 | 0
Parent Company [Member] |  |
Fixed income securities, amortized cost | 71 | 151
Other Investments | $ 46 | $ 40
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 20,000,000 | 20,000,000
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 130,000,000 | 130,000,000
Short-term Investments [Member] |  |
Fixed income securities, amortized cost | $ 653 | $ 430
Short-term Investments [Member] | Collateral Pledged [Member] | Fixed Income Securities [Member] |  |
Fixed income securities, amortized cost | 85 |
Short-term Investments [Member] | Parent Company [Member] |  |
Fixed income securities, amortized cost | 318 | 193
Variable Interest Entity, Primary Beneficiary [Member] |  |
Long-term Debt | $ 4,351 | $ 5,269

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