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Condensed Consolidated Statements of Financial Position (unaudited) (Parenthetical) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
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Statement of Financial Position [Abstract] |  |
Fixed income securities, at fair value, amortized cost | $ 45,468 | $ 41,376
Equity securities, at fair value, cost | 4,652 | 6,016
Short-term, at fair value, amortized cost | $ 4,031 | $ 4,009
Preferred stock, par value (in dollars per share) | $ 1 | $ 1
Preferred stock, shares authorized (in shares) | 25,000,000 | 25,000,000
Preferred stock, shares issued (in shares) | 81,000 | 81,000
Preferred stock, shares outstanding (in shares) | 81,000 | 81,000
Preferred stock, value aggregate liquidation preference | $ 2,025 | $ 2,025
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 2,000,000,000 | 2,000,000,000
Common stock, shares issued (in shares) | 900,000,000 | 900,000,000
Common stock, shares outstanding (in shares) | 266,000,000 | 281,000,000
Treasury stock, shares (in shares) | 634,000,000 | 619,000,000

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