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Investments | 12 Months Ended
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Dec. 31, 2022
Investments [Abstract] |
Investments | Investments The significant components of Net investment income are presented in the following table.
Years ended December 31 |  |  |  |  |
(In millions) | 2022 |  | 2021 |  | 2020
Fixed maturity securities | $ | 1,787 |  |  | $ | 1,707 |  |  | $ | 1,728 |
Equity securities | 23 |  |  | 83 |  |  | 65 |
Limited partnership investments | (12) |  |  | 362 |  |  | 121 |
Mortgage loans | 54 |  |  | 61 |  |  | 57 |
Short term investments | 16 |  |  | 1 |  |  | 9 |
Trading portfolio | 4 |  |  | 9 |  |  | 18 |
Other | 5 |  |  | — |  |  | 1 |
Gross investment income | 1,877 |  |  | 2,223 |  |  | 1,999 |
Investment expense | (72) |  |  | (64) |  |  | (64) |
Net investment income | $ | 1,805 |  |  | $ | 2,159 |  |  | $ | 1,935 |
Net investment income (loss) recognized due to the change in fair value of common stock held as of December 31, 2022, 2021 and 2020 | $ | 47 |  |  | $ | 28 |  |  | $ | 34 |
As of December 31, 2022 and 2021, the Company held $0 and less than $1 million of non-income producing fixed maturity securities. As of December 31, 2022 and 2021, the Company held $7 million of non-income producing mortgage loans. As of December 31, 2022 and 2021, no investments in a single issuer exceeded 10% of stockholders' equity, other than investments in securities issued by the U.S. Treasury and obligations of government-sponsored enterprises. Net investment gains (losses) are presented in the following table.
Years ended December 31 |  |  |  |  |
(In millions) | 2022 |  | 2021 |  | 2020
Net investment gains (losses): |  |  |  |  |
Fixed maturity securities: |  |  |  |  |
Gross gains | $ | 120 |  |  | $ | 186 |  |  | $ | 220 |
Gross losses | (261) |  |  | (90) |  |  | (220) |
Net investment gains (losses) on fixed maturity securities | (141) |  |  | 96 |  |  | — |
Equity securities | (116) |  |  | 4 |  |  | (3) |
Derivatives | 64 |  |  | 6 |  |  | (10) |
Mortgage loans | (8) |  |  | 10 |  |  | (21) |
Short term investments and other | 2 |  |  | 4 |  |  | (20) |
Net investment gains (losses) | $ | (199) |  |  | $ | 120 |  |  | $ | (54) |
Net investment gains (losses) recognized due to the change in fair value of non-redeemable preferred stock held as of December 31, 2022, 2021 and 2020 | $ | (75) |  |  | $ | 2 |  |  | $ | (3) |
Net investment gains (losses) for the year ended December 31, 2022 in the table above include an $18 million net gain related to the novation of a coinsurance agreement on the Company’s legacy annuity business, which was transacted on a funds withheld basis and gave rise to an embedded derivative. The net gain of $18 million is comprised of a $62 million gain on the associated embedded derivative partially offset by a $44 million loss on fixed maturity securities supporting the funds withheld liability, transferred with the novation, to recognize unrealized losses which had been included in AOCI since the inception of the coinsurance agreement. Taken together, this net gain is the final recognition of changes in the valuation of the funds held assets and offsets previously recognized net investment losses on the associated embedded derivative. Short term investments and other included a $20 million loss for the year ended December 31, 2020 related to the redemption of the Company's $400 million senior notes due August 2021. The components of available-for-sale impairment losses (gains) recognized in earnings by asset type are presented in the following table. 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.
Years ended December 31 |  |  |  |  |
(In millions) | 2022 |  | 2021 |  | 2020
Fixed maturity securities available-for-sale: |  |  |  |  |
Corporate and other bonds | $ | 62 |  |  | $ | 11 |  |  | $ | 87 |
Asset-backed | — |  |  | 20 |  |  | 24 |
Impairment losses (gains) recognized in earnings | $ | 62 |  |  | $ | 31 |  |  | $ | 111 |
For the ye ars ended December 31, 2022, 2021, and 2020 the Company also recognized $8 million of losses,$10 million of gains and $21 million of losses related to mortgage loans primarily due to changes in expected credit losses. The net change in unrealized gains on fixed maturity securities was $(7,850) million, $(1,272) million and $1,637 million for the years ended December 31, 2022, 2021 and 2020. The following tables present a summary of fixed maturity securities.
December 31, 2022 | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Allowance for Credit Losses |  | Estimated Fair Value
(In millions) |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |  |  |  |  |
Corporate and other bonds | $ | 23,137 |  |  | $ | 301 |  |  | $ | 2,009 |  |  | $ | — |  |  | $ | 21,429 |
States, municipalities and political subdivisions | 8,918 |  |  | 338 |  |  | 939 |  |  | — |  |  | 8,317 |
Asset-backed: |  |  |  |  |  |  |  |  |
Residential mortgage-backed | 3,073 |  |  | 5 |  |  | 447 |  |  | — |  |  | 2,631 |
Commercial mortgage-backed | 1,886 |  |  | 4 |  |  | 255 |  |  | — |  |  | 1,635 |
Other asset-backed | 3,287 |  |  | 2 |  |  | 361 |  |  | 1 |  |  | 2,927 |
Total asset-backed | 8,246 |  |  | 11 |  |  | 1,063 |  |  | 1 |  |  | 7,193 |
U.S. Treasury and obligations of government-sponsored enterprises | 111 |  |  | 1 |  |  | 2 |  |  | — |  |  | 110 |
Foreign government | 617 |  |  | 1 |  |  | 43 |  |  | — |  |  | 575 |
Redeemable preferred stock | 3 |  |  | — |  |  | — |  |  | — |  |  | 3 |
Total fixed maturity securities available-for-sale | 41,032 |  |  | 652 |  |  | 4,056 |  |  | 1 |  |  | 37,627 |
Total fixed maturity securities trading | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total fixed maturity securities | $ | 41,032 |  |  | $ | 652 |  |  | $ | 4,056 |  |  | $ | 1 |  |  | $ | 37,627 |
December 31, 2021 | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Allowance for Credit Losses |  | Estimated Fair Value
(In millions) |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |  |  |  |  |  |
Corporate and other bonds | $ | 21,444 |  |  | $ | 2,755 |  |  | $ | 56 |  |  | $ | 11 |  |  | $ | 24,132 |
States, municipalities and political subdivisions | 10,358 |  |  | 1,599 |  |  | 14 |  |  | — |  |  | 11,943 |
Asset-backed: |  |  |  |  |  |  |  |  |
Residential mortgage-backed | 2,893 |  |  | 71 |  |  | 8 |  |  | — |  |  | 2,956 |
Commercial mortgage-backed | 1,987 |  |  | 63 |  |  | 19 |  |  | — |  |  | 2,031 |
Other asset-backed | 2,561 |  |  | 54 |  |  | 10 |  |  | 7 |  |  | 2,598 |
Total asset-backed | 7,441 |  |  | 188 |  |  | 37 |  |  | 7 |  |  | 7,585 |
U.S. Treasury and obligations of government-sponsored enterprises | 132 |  |  | 1 |  |  | 3 |  |  | — |  |  | 130 |
Foreign government | 570 |  |  | 15 |  |  | 2 |  |  | — |  |  | 583 |
Redeemable preferred stock | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total fixed maturity securities available-for-sale | 39,945 |  |  | 4,558 |  |  | 112 |  |  | 18 |  |  | 44,373 |
Total fixed maturity securities trading | 7 |  |  | — |  |  | — |  |  | — |  |  | 7 |
Total fixed maturity securities | $ | 39,952 |  |  | $ | 4,558 |  |  | $ | 112 |  |  | $ | 18 |  |  | $ | 44,380 |
The following tables present the estimated fair value and gross unrealized losses of 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 Months |  | 12 Months or Longer |  | Total
December 31, 2022 | Estimated 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 | $ | 15,946 |  |  | $ | 1,585 |  |  | $ | 1,634 |  |  | $ | 424 |  |  | $ | 17,580 |  |  | $ | 2,009 |
States, municipalities and political subdivisions | 4,079 |  |  | 769 |  |  | 456 |  |  | 170 |  |  | 4,535 |  |  | 939 |
Asset-backed: |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed | 1,406 |  |  | 144 |  |  | 1,143 |  |  | 303 |  |  | 2,549 |  |  | 447 |
Commercial mortgage-backed | 1,167 |  |  | 159 |  |  | 408 |  |  | 96 |  |  | 1,575 |  |  | 255 |
Other asset-backed | 2,087 |  |  | 262 |  |  | 542 |  |  | 99 |  |  | 2,629 |  |  | 361 |
Total asset-backed | 4,660 |  |  | 565 |  |  | 2,093 |  |  | 498 |  |  | 6,753 |  |  | 1,063 |
U.S. Treasury and obligations of government-sponsored enterprises | 76 |  |  | 1 |  |  | 16 |  |  | 1 |  |  | 92 |  |  | 2 |
Foreign government | 473 |  |  | 26 |  |  | 78 |  |  | 17 |  |  | 551 |  |  | 43 |
Total | $ | 25,234 |  |  | $ | 2,946 |  |  | $ | 4,277 |  |  | $ | 1,110 |  |  | $ | 29,511 |  |  | $ | 4,056 |
| Less than 12 Months |  | 12 Months or Longer |  | Total
December 31, 2021 | Estimated 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 | $ | 2,389 |  |  | $ | 48 |  |  | $ | 136 |  |  | $ | 8 |  |  | $ | 2,525 |  |  | $ | 56 |
States, municipalities and political subdivisions | 730 |  |  | 14 |  |  | — |  |  | — |  |  | 730 |  |  | 14 |
Asset-backed: |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed | 1,043 |  |  | 8 |  |  | — |  |  | — |  |  | 1,043 |  |  | 8 |
Commercial mortgage-backed | 527 |  |  | 7 |  |  | 167 |  |  | 12 |  |  | 694 |  |  | 19 |
Other asset-backed | 840 |  |  | 10 |  |  | 62 |  |  | — |  |  | 902 |  |  | 10 |
Total asset-backed | 2,410 |  |  | 25 |  |  | 229 |  |  | 12 |  |  | 2,639 |  |  | 37 |
U.S. Treasury and obligations of government-sponsored enterprises | 69 |  |  | 3 |  |  | 5 |  |  | — |  |  | 74 |  |  | 3 |
Foreign government | 97 |  |  | 2 |  |  | — |  |  | — |  |  | 97 |  |  | 2 |
Total | $ | 5,695 |  |  | $ | 92 |  |  | $ | 370 |  |  | $ | 20 |  |  | $ | 6,065 |  |  | $ | 112 |
The following table presents the estimated fair value and gross unrealized losses of fixed maturity securities in a gross unrealized loss position for which an allowance for credit loss has not been recorded, by ratings distribution.
| December 31, 2022 |  | December 31, 2021
(In millions) | Estimated Fair Value |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Gross Unrealized Losses
U.S. Government, Government agencies and Government-sponsored enterprises | $ | 2,355 |  |  | $ | 337 |  |  | $ | 898 |  |  | $ | 8 |
AAA | 1,559 |  |  | 298 |  |  | 368 |  |  | 6 |
AA | 4,327 |  |  | 817 |  |  | 875 |  |  | 17 |
A | 6,615 |  |  | 749 |  |  | 1,516 |  |  | 23 |
BBB | 13,226 |  |  | 1,621 |  |  | 1,812 |  |  | 42 |
Non-investment grade | 1,429 |  |  | 234 |  |  | 596 |  |  | 16 |
Total | $ | 29,511 |  |  | $ | 4,056 |  |  | $ | 6,065 |  |  | $ | 112 |
Based on current facts and circumstances, the Company believes the unrealized losses presented in the December 31, 2022 securities in a gross unrealized loss position tables above are not indicative of the ultimate collectibility of the current amortized cost of the securities, but rather are primarily attributable to changes in risk-free interest rates and a general market widening of credit spreads. In reaching this determination, the Company considered the recent volatility in risk-free rates and credit spreads as well as the fact that its unrealized losses are concentrated in investment grade issuers. Additionally, the Company has no current intent to sell securities with unrealized losses, nor is it more likely than not that it will be required to sell prior to recovery of amortized cost; accordingly, the Company has determined that there are no additional impairment losses to be recorded as of December 31, 2022. 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 $394 million and $369 million as of December 31, 2022 and 2021 and is excluded from the estimate of expected credit losses and the amortized cost basis in the table included within this Note.
(In millions) | Corporate and other bonds |  | Asset-backed |  | Total
Allowance for credit losses: |  |  |  |  |
Balance as of January 1, 2022 | $ | 11 |  |  | $ | 7 |  |  | $ | 18 |
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 | — |  |  | 3 |  |  | 3 |
Reductions to the allowance for credit losses: |  |  |  |  |
Securities sold during the period (realized) | — |  |  | — |  |  | — |
Write-offs charged against the allowance | 12 |  |  | — |  |  | 12 |
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period | 1 |  |  | (9) |  |  | (8) |
Balance as of December 31, 2022 | $ | — |  |  | $ | 1 |  |  | $ | 1 |
(In millions) | Corporate and other bonds |  | Asset-backed |  | Total
Allowance for credit losses: |  |  |  |  |
Balance as of January 1, 2021 | $ | 23 |  |  | $ | 17 |  |  | $ | 40 |
Additions to the allowance for credit losses: |  |  |  |  |
Securities for which credit losses were not previously recorded | 14 |  |  | — |  |  | 14 |
Available-for-sale securities accounted for as PCD assets | 5 |  |  | 6 |  |  | 11 |
Reductions to the allowance for credit losses: |  |  |  |  |
Securities sold during the period (realized) | 7 |  |  | 17 |  |  | 24 |
Write-offs charged against the allowance | 16 |  |  | — |  |  | 16 |
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period | (8) |  |  | 1 |  |  | (7) |
Balance as of December 31, 2021 | $ | 11 |  |  | $ | 7 |  |  | $ | 18 |
Contractual Maturity The following table presents available-for-sale fixed maturity securities by contractual maturity.
December 31 | 2022 |  | 2021
(In millions) | Cost or Amortized Cost |  | Estimated Fair Value |  | Cost or Amortized Cost |  | Estimated Fair Value
Due in one year or less | $ | 1,012 |  |  | $ | 1,001 |  |  | $ | 1,603 |  |  | $ | 1,624 |
Due after one year through five years | 9,880 |  |  | 9,399 |  |  | 10,637 |  |  | 11,229 |
Due after five years through ten years | 13,788 |  |  | 12,453 |  |  | 13,294 |  |  | 14,338 |
Due after ten years | 16,352 |  |  | 14,774 |  |  | 14,411 |  |  | 17,182 |
Total | $ | 41,032 |  |  | $ | 37,627 |  |  | $ | 39,945 |  |  | $ | 44,373 |
Actual maturities may differ from contractual maturities because certain securities may be called or prepaid. Securities not due at a single date are allocated based on weighted average life. Limited Partnerships The carrying value of limited partnerships as of December 31, 2022 and 2021 was $1,926 million and $1,859 million, which includes net undistributed earnings of $176 million and $266 million. Limited partnerships comprising 26% of the total carrying value are reported on a current basis through December 31, 2022 with no reporting lag, 5% are reported on a one month lag and the remainder are reported on more than a one month lag. The number of limited partnerships held and the strategies employed provide diversification to the limited partnership portfolio and the overall invested asset portfolio. Limited partnerships comprising 76% and 68% of the carrying value as of December 31, 2022 and 2021 were invested in private debt and equity. Limited partnerships comprising 24% and 32% of the carrying value as of December 31, 2022 and 2021 employ hedge fund strategies. Private debt and equity funds cover a broad range of investment strategies including buyout, co-investment, private credit, growth capital, distressed investing and real estate. Hedge fund strategies include both long and short positions in fixed income, equity and derivative instruments. The ten largest limited partnership positions held totaled $633 million and $665 million as of December 31, 2022 and 2021. Based on the most recent information available regarding the Company’s percentage ownership of the individual limited partnerships, the carrying value reflected on the Consolidated Balance Sheets represents approximately 1% of the aggregate partnership equity as of December 31, 2022 and 2021, and the related income reflected on the Consolidated Statements of Operations represents approximately 2% of the changes in aggregate partnership equity for the years ended December 31, 2022, 2021 and 2020. There are risks inherent in limited partnership investments which may result in losses due to short-selling, derivatives or other speculative investment practices. The use of leverage increases volatility generated by the underlying investment strategies. The Company’s private debt, private equity and other non-hedge fund limited partnership investments generally do not permit voluntary withdrawals. The Company’s hedge fund limited partnership investments contain withdrawal provisions that generally limit liquidity for a period of thirty days up to one year or longer. Typically, hedge fund withdrawals require advance written notice of up to 90 days. Derivative Financial Instruments The Company may use derivatives in the normal course of business, primarily in an attempt to reduce its exposure to market risk (principally interest rate risk and foreign currency risk) stemming from various assets and liabilities. The Company's principal objective under such strategies is to achieve the desired reduction in economic risk, even if the position does not receive hedge accounting treatment. The Company may enter into interest rate swaps, futures and forward commitments to purchase securities to manage interest rate risk. The Company may use foreign currency forward contracts to manage foreign currency risk. Credit exposure associated with non-performance by the counterparties to derivative instruments is generally limited to the uncollateralized fair value of the asset related to the instruments recognized on the Consolidated Balance Sheets. The Company generally requires that all over-the-counter derivative contracts be governed by an International Swaps and Derivatives Association Master Agreement, and exchanges collateral under the terms of these agreements with its derivative investment counterparties depending on the amount of the exposure and the credit rating of the counterparty. Gross estimated fair values of derivative positions are presented in Other invested assets and Other liabilities on the Consolidated Balance Sheets. The Company does not offset derivative positions against the fair value of collateral provided or positions subject to netting arrangements. There would be no significant difference in the balance included in such accounts if the estimated fair values were presented net as of December 31, 2022 and 2021. There was less than $1 million of cash collateral provided by the Company and no cash collateral received from counterparties as of December 31, 2022. There was no cash collateral provided by the Company or cash collateral received from counterparties as of December 31, 2021. As of December 31, 2021, the Company held an embedded derivative on a funds withheld liability related to a coinsurance agreement on its legacy annuity business. The embedded derivative had a notional value of $270 million and a fair value of $(12) million as of December 31, 2021 and was accounted for separately and reported with the funds withheld liability in Other liabilities on the Consolidated Balance Sheets. During the year ended December 31, 2022, the Company novated the coinsurance agreement resulting in the transfer of $224 million of fixed maturity securities, $4 million of short term investments and $2 million of accrued investment income in settlement of the $216 million funds withheld liability and associated $14 million embedded derivative. Investment Commitments As part of its overall investment strategy, the Company invests in various assets which require future purchase, sale or funding commitments. These investments are recorded once funded, and the related commitments may include future capital calls from various third-party limited partnerships, signed and accepted mortgage loan applications, and obligations related to private placement securities. As of December 31, 2022, the Company had commitments to purchase or fund approximately $1,455 million and sell approximately $60 million under the terms of these investments. Investments on Deposit Cash and securities with carrying values of approximately $2.8 billion and $3.0 billion were deposited by the Company’s insurance subsidiaries under requirements of regulatory authorities and others as of December 31, 2022 and 2021. Cash and securities with carrying values of approximately $0.9 billion and $1.2 billion were deposited with financial institutions in trust accounts or as collateral for letters of credit to secure obligations with various third parties as of December 31, 2022 and 2021. Mortgage Loans The following table presents the amortized cost basis of mortgage loans for each credit quality indicator by year of origination.
December 31, 2022 | Mortgage Loans Amortized Cost Basis by Origination Year (1)
(In millions) | 2022 |  | 2021 |  | 2020 |  | 2019 |  | 2018 |  | Prior |  | Total
DSCR ≥1.6x |  |  |  |  |  |  |  |  |  |  |  |  |
LTV less than 55% | $ | 9 |  |  | $ | 13 |  |  | $ | 112 |  |  | $ | 41 |  |  | $ | 53 |  |  | $ | 255 |  |  | $ | 483 |
LTV 55% to 65% | 13 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 13
LTV greater than 65% | 18 |  |  | 11 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 29
DSCR 1.2x - 1.6x |  |  |  |  |  |  |  |  |  |  |  |  |
LTV less than 55% | 5 |  |  | 49 |  |  | 18 |  |  | 43 |  |  | 10 |  |  | 37 |  |  | 162
LTV 55% to 65% | 86 |  |  | — |  |  | 20 |  |  | — |  |  | — |  |  | 8 |  |  | 114
LTV greater than 65% | 15 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 15
DSCR ≤1.2 |  |  |  |  |  |  |  |  |  |  |  |  |
LTV less than 55% | 35 |  |  | — |  |  | — |  |  | 57 |  |  | — |  |  | — |  |  | 92
LTV 55% to 65% | 41 |  |  | 21 |  |  | — |  |  | 38 |  |  | — |  |  | — |  |  | 100
LTV greater than 65% | 27 |  |  | — |  |  | — |  |  | 22 |  |  | — |  |  | 7 |  |  | 56
Total | $ | 249 |  |  | $ | 94 |  |  | $ | 150 |  |  | $ | 201 |  |  | $ | 63 |  |  | $ | 307 |  |  | $ | 1,064 |
(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. As of December 31, 2022, accrued interest receivable on mortgage loans totaled $4 million and is excluded from the amortized cost basis disclosed in the table above and the estimate of expected credit losses.

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