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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Fixed maturities - available for sale, at fair value, amortized cost | $ 24,191 | $ 22,064
Fixed maturities - available for sale, at fair value, allowance for credit loss | (54) | (30)
Fixed maturities - held to maturity, at amortized cost, net of credit allowances, fair value | 821 |
Fixed maturities - held to maturity, at amortized cost, credit allowances | (9) |
Short-term investments, at cost | 1,032 | 1,178
Premiums receivable, credit allowances | (29) | (26)
Reinsurance paid loss recoverables, credit allowances | (23) | (17)
Other assets, credit allowances | $ (5) | $ (4)
Preferred shares, par value | $ 0.01 | $ 0.01
Preferred shares, authorized | 50,000,000.0 | 50,000,000
Preferred shares, issued | 0 | 0
Preferred shares, outstanding | 0 | 0
Common shares, par value | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 200,000,000.0 | 200,000,000
Common shares, outstanding | 69,900,000 | 69,800,000
Accumulated other comprehensive income (loss), net deferred income tax expense (benefit) | $ (250) | $ 27
Treasury shares | 30,800,000 | 30,500,000

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