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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Statement of Financial Position [Abstract] |  |
Fixed maturity securities, available-for-sale securities, amortized cost | $ 52,973 | $ 51,681
Fixed maturity securities, available-for-sale securities, allowance for credit losses | 85 | 67
Available-for-sale securities, pledged securities, secured trust deposits | 462 | 495
Allowance for credit loss | 73 | 70
Cash, pledged, secured trust deposits | 155 | 69
Allowance for doubtful accounts, premiums and other receivables | 32 | 32
Expected credit losses on reinsurance recoverable | $ 20 | $ 20
Common stock, par or stated value per share (in usd per share) | $ 0.0001 | $ 0.0001
Common stock, shares authorized (in shares) | 600,000,000 | 600,000,000
Common stock, shares, outstanding (in shares) | 275,000,000 | 275,000,000
Preferred stock, par or stated value per share (in usd per share) | $ 0.0001 | $ 0.0001
Preferred stock, shares authorized (in shares) | 50,000,000 | 50,000,000
Preferred stock, shares issued (in shares) | 0 | 0
Preferred stock, shares outstanding (in shares) | 0 | 0
Treasury stock (in shares) | 57,000,000 | 56,000,000

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