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v3.23.1

Investments (Summary of fixed maturity and equity securities) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | $ 41,646 | $ 41,032 |  |  |
Gross Unrealized Gains | 867 | 652 |  |  |
Gross Unrealized Losses | 3,418 | 4,056 |  |  |
Allowance for Credit Losses | 2 | 1 |  | $ 17 | $ 18
Estimated Fair Value | 39,093 | 37,627 |  |  |
Total fixed maturity securities trading |  |  |  |  |
Debt securities, amortized cost | 41,660 | 41,032 |  |  |
Total fixed maturity securities | 39,107 | 37,627 | [1] |  |
Corporate and other bonds |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 24,140 | 23,137 |  |  |
Gross Unrealized Gains | 437 | 301 |  |  |
Gross Unrealized Losses | 1,675 | 2,009 |  |  |
Allowance for Credit Losses | 1 | 0 |  | 12 | 11
Estimated Fair Value | 22,901 | 21,429 |  |  |
Total fixed maturity securities trading |  |  |  |  |
Total fixed maturity securities | 23,651 | 22,117 |  |  |
States, municipalities and political subdivisions |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 8,332 | 8,918 |  |  |
Gross Unrealized Gains | 410 | 338 |  |  |
Gross Unrealized Losses | 741 | 939 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 8,001 | 8,317 |  |  |
Total fixed maturity securities trading |  |  |  |  |
Total fixed maturity securities | 8,001 | 8,317 |  |  |
Asset-backed |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 8,398 | 8,246 |  |  |
Gross Unrealized Gains | 19 | 11 |  |  |
Gross Unrealized Losses | 961 | 1,063 |  |  |
Allowance for Credit Losses | 1 | 1 |  | $ 5 | $ 7
Estimated Fair Value | 7,455 | 7,193 |  |  |
Total fixed maturity securities trading |  |  |  |  |
Total fixed maturity securities | 7,455 | 7,193 |  |  |
Residential mortgage-backed |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 3,066 | 3,073 |  |  |
Gross Unrealized Gains | 6 | 5 |  |  |
Gross Unrealized Losses | 413 | 447 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 2,659 | 2,631 |  |  |
Commercial mortgage-backed |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 1,868 | 1,886 |  |  |
Gross Unrealized Gains | 5 | 4 |  |  |
Gross Unrealized Losses | 242 | 255 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 1,631 | 1,635 |  |  |
Other asset-backed |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 3,464 | 3,287 |  |  |
Gross Unrealized Gains | 8 | 2 |  |  |
Gross Unrealized Losses | 306 | 361 |  |  |
Allowance for Credit Losses | 1 | 1 |  |  |
Estimated Fair Value | 3,165 | 2,927 |  |  |
U.S. Treasury and obligations of government-sponsored enterprises |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 126 | 111 |  |  |
Gross Unrealized Gains | 0 | 1 |  |  |
Gross Unrealized Losses | 2 | 2 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 124 | 110 |  |  |
Foreign government |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 647 | 617 |  |  |
Gross Unrealized Gains | 1 | 1 |  |  |
Gross Unrealized Losses | 39 | 43 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 609 | 575 |  |  |
Redeemable preferred stock |  |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |
Cost or Amortized Cost | 3 | 3 |  |  |
Gross Unrealized Gains | 0 | 0 |  |  |
Gross Unrealized Losses | 0 | 0 |  |  |
Allowance for Credit Losses | 0 | 0 |  |  |
Estimated Fair Value | 3 | 3 |  |  |
Total fixed maturity securities trading |  |  |  |  |
Total fixed maturity securities trading |  |  |  |  |
Cost or Amortized Cost | 14 | 0 |  |  |
Estimated Fair Value | $ 14 | $ 0 |  |  |
[1] | As of January 1, 2023, the Company adopted ASU 2018-12 using the modified retrospective method applied as of the transition date of January 1, 2021. Prior period amounts in the financial statements have been adjusted to reflect application of the new guidance. See Note A to the Condensed Consolidated Financial Statements for additional information.

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