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Investments (Tables)
9 Months Ended
Sep. 30, 2024
Investments [Abstract]  
Net investment income
The significant components of Net investment income are presented in the following table.
Periods ended September 30Three MonthsNine Months
(In millions)2024202320242023
Fixed maturity securities$517 $491 $1,530 $1,443 
Equity securities21 56 42 
Limited partnership investments67 28 195 108 
Mortgage loans14 15 43 43 
Short-term investments20 23 68 51 
Trading portfolio— 
Other23 20 
Gross investment income647 573 1,916 1,711 
Investment expense(21)(20)(63)(58)
Net investment income$626 $553 $1,853 $1,653 
Net investment income (loss) recognized due to the change in fair value of common stock held as of September 30, 2024 and 2023
$11 $(3)$20 $
Net realized investment gains (losses)
Net investment gains (losses) are presented in the following table.
Periods ended September 30Three MonthsNine Months
(In millions)2024202320242023
Net investment gains (losses):
Fixed maturity securities:
Gross gains$11 $12 $38 $55 
Gross losses(33)(49)(104)(141)
Net investment gains (losses) on fixed maturity securities(22)(37)(66)(86)
Equity securities13 25 (9)
Mortgage loans— (5)— (11)
Short-term investments and other(1)(1)
Net investment gains (losses)$(10)$(38)$(42)$(105)
Net investment gains (losses) recognized due to the change in fair value of non-redeemable preferred stock held as of September 30, 2024 and 2023
$13 $$24 $
Components of net other than temporary impairment losses recognized in earnings by asset type The table includes losses (gains) on securities with an intention to sell and changes in the allowance for credit losses on securities since acquisition date.
Periods ended September 30Three MonthsNine Months
(In millions)2024202320242023
Fixed maturity securities available-for-sale:
Corporate and other bonds$$$23 $25 
Asset-backed12 
Impairment losses (gains) recognized in earnings$12 $12 $32 $37 
Summary of fixed maturity securities
The following tables present a summary of fixed maturity securities.
September 30, 2024Cost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesEstimated
Fair
Value
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$25,872 $826 $900 $$25,792 
States, municipalities and political subdivisions7,406 359 617 — 7,148 
Asset-backed:
Residential mortgage-backed3,684 32 362 — 3,354 
Commercial mortgage-backed1,867 15 141 — 1,741 
Other asset-backed3,743 40 186 12 3,585 
Total asset-backed9,294 87 689 12 8,680 
U.S. Treasury and obligations of government-sponsored enterprises224 — 222 
Foreign government755 26 — 737 
Total fixed maturity securities available-for-sale43,551 1,282 2,236 18 42,579 
Total fixed maturity securities trading— — — — — 
Total fixed maturity securities$43,551 $1,282 $2,236 $18 $42,579 
December 31, 2023Cost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesEstimated
Fair
Value
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$25,020 $597 $1,345 $$24,268 
States, municipalities and political subdivisions7,713 382 703 — 7,392 
Asset-backed:
Residential mortgage-backed3,411 16 425 — 3,002 
Commercial mortgage-backed1,862 230 1,631 
Other asset-backed3,515 13 256 3,268 
Total asset-backed8,788 36 911 12 7,901 
U.S. Treasury and obligations of government-sponsored enterprises152 — 151 
Foreign government741 34 — 713 
Total fixed maturity securities available-for-sale42,414 1,022 2,995 16 40,425 
Total fixed maturity securities trading— — — — — 
Total fixed maturity securities$42,414 $1,022 $2,995 $16 $40,425 
Debt securities, available-for-sale, unrealized loss position, fair value
The following tables present the estimated fair value and gross unrealized losses of available-for-sale fixed maturity securities in a gross unrealized loss position for which an allowance for credit loss has not been recorded, by the length of time in which the securities have continuously been in that position.
Less than 12 Months12 Months or LongerTotal
September 30, 2024Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$1,664 $31 $11,240 $869 $12,904 $900 
States, municipalities and political subdivisions422 3,155 610 3,577 617 
Asset-backed:
Residential mortgage-backed130 2,162 360 2,292 362 
Commercial mortgage-backed112 — 1,134 141 1,246 141 
Other asset-backed151 1,638 182 1,789 186 
Total asset-backed393 4,934 683 5,327 689 
U.S. Treasury and obligations of government-sponsored enterprises45 45 90 
Foreign government99 403 25 502 26 
Total$2,623 $47 $19,777 $2,189 $22,400 $2,236 
Less than 12 Months12 Months or LongerTotal
December 31, 2023Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$1,943 $37 $13,406 $1,308 $15,349 $1,345 
States, municipalities and political subdivisions598 18 3,104 685 3,702 703 
Asset-backed:
Residential mortgage-backed233 2,212 421 2,445 425 
Commercial mortgage-backed200 1,184 225 1,384 230 
Other asset-backed392 1,869 248 2,261 256 
Total asset-backed825 17 5,265 894 6,090 911 
U.S. Treasury and obligations of government-sponsored enterprises65 23 88 
   Foreign government52 450 33 502 34 
Total$3,483 $74 $22,248 $2,921 $25,731 $2,995 
The following table presents the estimated fair value and gross unrealized losses of available-for-sale fixed maturity securities in a gross unrealized loss position for which an allowance for credit loss has not been recorded, by ratings distribution.
September 30, 2024December 31, 2023

(In millions)
Estimated Fair ValueGross Unrealized LossesEstimated Fair ValueGross Unrealized Losses
U.S. Government, Government agencies and Government-sponsored enterprises$2,127 $265 $2,273 $309 
AAA1,277 221 1,524 261 
AA 3,641 547 3,817 658 
A5,229 405 5,652 517 
BBB9,243 689 11,523 1,095 
Non-investment grade883 109 942 155 
Total$22,400 $2,236 $25,731 $2,995 
Debt securities, available-for-sale, allowance for credit loss
The following tables present the activity related to the allowance on available-for-sale securities with credit impairments and purchased credit-deteriorated (PCD) assets. Accrued interest receivable on available-for-sale fixed maturity securities totaled $451 million, $435 million, and $430 million as of September 30, 2024, December 31, 2023, and September 30, 2023 and is excluded from the estimate of expected credit losses and the amortized cost basis in the tables included within this Note.
(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of July 1, 2024
$— $17 $17 
Additions to the allowance for credit losses:
Securities for which credit losses were not previously recorded— 
Available-for-sale securities accounted for as PCD assets— 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)— — — 
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— — — 
Write-offs charged against the allowance— 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period— 
Balance as of September 30, 2024
$$12 $18 
(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of July 1, 2023
$13 $$22 
Additions to the allowance for credit losses:
Securities for which credit losses were not previously recorded— 
Available-for-sale securities accounted for as PCD assets— 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)— — — 
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— — — 
Write-offs charged against the allowance15 — 15 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period— 
Balance as of September 30, 2023
$$13 $18 
(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of January 1, 2024
$$12 $16 
Additions to the allowance for credit losses:
Securities for which credit losses were not previously recorded— 
Available-for-sale securities accounted for as PCD assets— 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— 
Write-offs charged against the allowance— 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period— 10 10 
Balance as of September 30, 2024
$$12 $18 

(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of January 1, 2023
$— $$
Additions to the allowance for credit losses:
Securities for which credit losses were not previously recorded13 
Available-for-sale securities accounted for as PCD assets22 — 22 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)— 
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— 
Write-offs charged against the allowance15 — 15 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period
Balance as of September 30, 2023
$$13 $18 
Contractual maturity
The following table presents available-for-sale fixed maturity securities by contractual maturity.
September 30, 2024December 31, 2023
(In millions)Cost or
Amortized
Cost
Estimated
Fair
Value
Cost or
Amortized
Cost
Estimated
Fair
Value
Due in one year or less$1,585 $1,565 $1,121 $1,091 
Due after one year through five years11,948 11,800 11,563 11,180 
Due after five years through ten years13,333 12,959 13,359 12,573 
Due after ten years16,685 16,255 16,371 15,581 
Total$43,551 $42,579 $42,414 $40,425 
Financing receivable credit quality indicators
The following table presents the amortized cost basis of mortgage loans for each credit quality indicator by year of origination. The primary credit quality indicators utilized are debt service coverage ratios (DSCR) and loan-to-value ratios (LTV).
September 30, 2024
Mortgage Loans Amortized Cost Basis by Origination Year (1)
(In millions)20242023202220212020PriorTotal
DSCR ≥1.6x
LTV less than 55%$— $33 $$$97 $242 $383 
LTV 55% to 65%— — — — — 5
LTV greater than 65%— — 30 12 — — 42
DSCR 1.2x - 1.6x
LTV less than 55%— 28 — 13 50 96
LTV 55% to 65%43 20 36 36 31 170
LTV greater than 65%— 13 64 — 20 — 97
DSCR ≤1.2
LTV less than 55%— — — — — — — 
LTV 55% to 65%— 32 75 — — 41 148
LTV greater than 65%— — 28 21 — 48 97
Total$43 $126 $247 $76 $134 $412 $1,038 
(1) The values in the table above reflect DSCR on a standardized amortization period and LTV based on the most recent appraised values trended forward using changes in a commercial real estate price index.