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Investments (Tables)
3 Months Ended
Mar. 31, 2021
Investments [Abstract]  
Fixed Maturities, Available-for-sale Securities
The following tables set forth the composition of fixed maturity securities (excluding investments classified as trading), as of the dates indicated:
 
 March 31, 2021
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesFair
Value
 (in millions)
Fixed maturities, available-for-sale:
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$23,400 $4,490 $262 $$27,628 
Obligations of U.S. states and their political subdivisions10,491 1,625 27 12,089 
Foreign government bonds89,084 13,738 338 102,484 
U.S. public corporate securities95,495 11,384 891 13 105,975 
U.S. private corporate securities(1)36,904 2,776 286 46 39,348 
Foreign public corporate securities25,892 2,713 140 25 28,440 
Foreign private corporate securities28,772 2,074 329 38 30,479 
Asset-backed securities(2)13,470 179 14 13,635 
Commercial mortgage-backed securities14,673 803 42 15,425 
Residential mortgage-backed securities(3)2,941 168 16 3,093 
Total fixed maturities, available-for-sale(1)$341,122 $39,950 $2,345 $131 $378,596 
__________
(1)Excludes notes with amortized cost of $5,766 million (fair value, $5,774 million), which have been offset with the associated debt under a netting agreement.
(2)Includes credit-tranched securities collateralized by loan obligations, auto loans, education loans, credit cards and other asset types.
(3)Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(4)Excludes notes with amortized cost of $4,748 million (fair value, $5,186 million), which have been offset with the associated debt under a netting agreement.
 December 31, 2020
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesFair
Value
 (in millions)
Fixed maturities, available-for-sale:
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$30,766 $9,699 $17 $$40,448 
Obligations of U.S. states and their political subdivisions10,668 2,144 12,811 
Foreign government bonds94,110 16,373 239 110,244 
U.S. public corporate securities95,299 18,516 213 47 113,555 
U.S. private corporate securities(1)36,894 4,196 134 19 40,937 
Foreign public corporate securities25,857 3,768 64 24 29,537 
Foreign private corporate securities28,668 3,183 226 33 31,592 
Asset-backed securities(2)14,489 176 74 14,591 
Commercial mortgage-backed securities15,036 1,288 11 10 16,303 
Residential mortgage-backed securities(3)2,683 205 2,887 
Total fixed maturities, available-for-sale(1)$354,470 $59,548 $980 $133 $412,905 
__________
(1)Excludes notes with amortized cost of $5,966 million (fair value, $6,100 million), which have been offset with the associated debt under a netting agreement.
(2)Includes credit-tranched securities collateralized by loan obligations, auto loans, education loans, home equity and other asset types.
(3)Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(4)Excludes notes with amortized cost of $4,998 million (fair value, $5,821 million), which have been offset with the associated debt under a netting agreement.
Fixed Maturities, Held-to-maturity Securities
 March 31, 2021
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Allowance for Credit LossesAmortized Cost,
Net of Allowance
 (in millions)
Fixed maturities, held-to-maturity:
Foreign government bonds$872 $239 $$1,111 $$872 
Foreign public corporate securities612 60 672 605 
Foreign private corporate securities82 83 82 
Residential mortgage-backed securities(3)242 17 259 242 
Total fixed maturities, held-to-maturity(4)$1,808 $317 $$2,125 $$1,801 
__________
(1)Excludes notes with amortized cost of $5,766 million (fair value, $5,774 million), which have been offset with the associated debt under a netting agreement.
(2)Includes credit-tranched securities collateralized by loan obligations, auto loans, education loans, credit cards and other asset types.
(3)Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(4)Excludes notes with amortized cost of $4,748 million (fair value, $5,186 million), which have been offset with the associated debt under a netting agreement.
 December 31, 2020
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Allowance for Credit LossesAmortized
Cost, Net of Allowance
 (in millions)
Fixed maturities, held-to-maturity:
Foreign government bonds$935 $270 $$1,205 $$935 
Foreign public corporate securities651 68 719 642 
Foreign private corporate securities87 88 87 
Residential mortgage-backed securities(3)266 20 286 266 
Total fixed maturities, held-to-maturity(4)$1,939 $359 $$2,298 $$1,930 
__________
(1)Excludes notes with amortized cost of $5,966 million (fair value, $6,100 million), which have been offset with the associated debt under a netting agreement.
(2)Includes credit-tranched securities collateralized by loan obligations, auto loans, education loans, home equity and other asset types.
(3)Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(4)Excludes notes with amortized cost of $4,998 million (fair value, $5,821 million), which have been offset with the associated debt under a netting agreement.
Duration Of Gross Unrealized Losses On Fixed Maturity Securities
The following tables set forth the fair value and gross unrealized losses on available-for-sale fixed maturity securities without an allowance for credit losses aggregated by investment category and length of time that individual fixed maturity securities had been in a continuous unrealized loss position, as of the dates indicated:
 
 March 31, 2021
 Less Than
Twelve Months
Twelve Months
or More
Total
 Fair
Value
Gross
Unrealized
Losses
Fair
Value
Gross
Unrealized
Losses
Fair
Value
Gross
Unrealized
Losses
 (in millions)
Fixed maturities, available-for-sale:
U.S. Treasury securities and obligations of U.S. government authorities and agencies$3,972 $262 $$$3,973 $262 
Obligations of U.S. states and their political subdivisions541 27 541 27 
Foreign government bonds7,459 208 1,560 130 9,019 338 
U.S. public corporate securities14,295 805 996 81 15,291 886 
U.S. private corporate securities4,970 217 913 68 5,883 285 
Foreign public corporate securities2,967 93 822 40 3,789 133 
Foreign private corporate securities3,676 118 1,965 210 5,641 328 
Asset-backed securities1,536 1,451 2,987 14 
Commercial mortgage-backed securities1,048 34 139 1,187 42 
Residential mortgage-backed securities607 16 12 619 16 
Total fixed maturities, available-for-sale$41,071 $1,788 $7,859 $543 $48,930 $2,331 
 
 December 31, 2020
 Less Than
Twelve Months
Twelve Months
or More
Total
 Fair
Value
Gross
Unrealized
Losses
Fair
Value
Gross
Unrealized
Losses
Fair
Value
Gross
Unrealized
Losses
 (in millions)
Fixed maturities, available-for-sale:
U.S. Treasury securities and obligations of U.S. government authorities and agencies$750 $17 $$$750 $17 
Obligations of U.S. states and their political subdivisions73 73 
Foreign government bonds6,536 231 39 6,575 239 
U.S. public corporate securities3,905 87 1,197 106 5,102 193 
U.S. private corporate securities1,712 52 843 82 2,555 134 
Foreign public corporate securities1,412 30 376 23 1,788 53 
Foreign private corporate securities798 34 2,371 192 3,169 226 
Asset-backed securities4,132 25 4,685 49 8,817 74 
Commercial mortgage-backed securities284 93 377 11 
Residential mortgage-backed securities116 117 
Total fixed maturities, available-for-sale$19,718 $486 $9,605 $463 $29,323 $949 
Fixed Maturities Classified by Contractual Maturity Date
The following table sets forth the amortized cost or amortized cost, net of allowance and fair value of fixed maturities by contractual maturities, as of the date indicated: 
March 31, 2021
Available-for-SaleHeld-to-Maturity
 Amortized CostFair ValueAmortized Cost, Net of AllowanceFair Value
(in millions)
Fixed maturities:
Due in one year or less $16,008 $16,547 $112 $112 
Due after one year through five years52,751 56,779 496 564 
Due after five years through ten years64,596 71,466 105 108 
Due after ten years(1)176,683 201,651 846 1,082 
Asset-backed securities 13,470 13,635 
Commercial mortgage-backed securities14,673 15,425 
Residential mortgage-backed securities2,941 3,093 242 259 
Total$341,122 $378,596 $1,801 $2,125 
__________
(1)Excludes available-for-sale notes with amortized cost of $5,766 million (fair value, $5,774 million) and held-to-maturity notes with amortized cost of $4,748 million (fair value, $5,186 million), which have been offset with the associated debt under a netting agreement.
Sources of Fixed Maturity Proceeds and Related Investment Gains (Losses) as well as Losses on Impairments The following table sets forth the sources of fixed maturity proceeds and related investment gains (losses), as well as losses on write-downs and the allowance for credit losses of fixed maturities, for the periods indicated:
 Three Months Ended
March 31,
 20212020
 (in millions)
Fixed maturities, available-for-sale:
Proceeds from sales(1)$14,690 $5,153 
Proceeds from maturities/prepayments6,894 4,883 
Gross investment gains from sales and maturities1,603 468 
Gross investment losses from sales and maturities(389)(61)
Write-downs recognized in earnings(2)(91)
(Addition to) release of allowance for credit losses(158)
Fixed maturities, held-to-maturity:
Proceeds from maturities/prepayments(3)$12 $41 
(Addition to) release of allowance for credit losses0
__________ 
(1)Includes $114 million and $39 million of non-cash related proceeds due to the timing of trade settlements for the three months ended March 31, 2021 and 2020, respectively.
(2)Amounts represent write-downs on credit adverse securities, write-downs on securities approaching maturity related to foreign exchange movements and securities actively marketed for sale.
(3)Includes less than $1 million of non-cash related proceeds due to the timing of trade settlements for both the three months ended March 31, 2021 and 2020.
Credit Losses Recognized in Earnings on Fixed Maturity Securities Held by the Company for which a Portion of the OTTI Loss was Recognized in OCI
The following tables set forth the activity in the allowance for credit losses for fixed maturity securities, as of the dates indicated: 

Three Months Ended March 31, 2021
U.S. Treasury Securities and Obligations of U.S. StatesForeign Government BondsU.S. and Foreign Corporate SecuritiesAsset-Backed SecuritiesCommercial Mortgage-Backed SecuritiesResidential Mortgage-Backed SecuritiesTotal
(in millions)
Fixed maturities, available-for-sale:
Balance, beginning of period$$$123 $$10 $$133 
Additions to allowance for credit losses not previously recorded
31 31 
Reductions for securities sold during the period
(26)(26)
Additions (reductions) on securities with previous allowance(6)(1)(7)
Balance, end of period$$$122 $$$$131 
Three Months Ended March 31, 2020
U.S. Treasury Securities and Obligations of U.S. StatesForeign Government BondsU.S. and Foreign Corporate SecuritiesAsset-Backed SecuritiesCommercial Mortgage-Backed SecuritiesResidential Mortgage-Backed SecuritiesTotal
(in millions)
Fixed maturities, available-for-sale:
Balance, beginning of period$$$$$$$
Additions to allowance for credit losses not previously recorded
38 119 158 
Balance, end of period$$38 $119 $$$$158 


Three Months Ended March 31, 2021
U.S. Treasury Securities and Obligations of U.S. StatesForeign Government BondsU.S. and Foreign Corporate SecuritiesAsset-Backed SecuritiesCommercial Mortgage-Backed SecuritiesResidential Mortgage-Backed SecuritiesTotal
(in millions)
Fixed maturities, held-to-maturity:
Balance, beginning of period$$$$$$$
Current period provision for expected losses(2)(2)
Balance, end of period$$$$$$$


Three Months Ended March 31, 2020
U.S. Treasury Securities and Obligations of U.S. StatesForeign Government BondsU.S. and Foreign Corporate SecuritiesAsset-Backed SecuritiesCommercial Mortgage-Backed SecuritiesResidential Mortgage-Backed SecuritiesTotal
(in millions)
Fixed maturities, held-to-maturity:
Balance, beginning of period$$$$$$$
Cumulative effect of adoption of ASU 2016-13
Balance, end of period$$$$$$$
Assets Supporting Experience-Rated Contractholder Liabilities
The following table sets forth the composition of “Assets supporting experience-rated contractholder liabilities,” as of the dates indicated:
 March 31, 2021December 31, 2020
 Amortized
Cost or Cost
Fair
Value
Amortized
Cost or Cost
Fair
Value
 (in millions)
Short-term investments and cash equivalents$429 $429 $658 $658 
Fixed maturities:
Corporate securities14,470 15,130 14,442 15,472 
Commercial mortgage-backed securities1,699 1,773 1,743 1,839 
Residential mortgage-backed securities(1)873 915 964 1,018 
Asset-backed securities(2)2,039 2,066 1,665 1,697 
Foreign government bonds994 996 934 945 
U.S. government authorities and agencies and obligations of U.S. states363 422 371 443 
Total fixed maturities(3)20,438 21,302 20,119 21,414 
Equity securities1,942 2,296 1,661 2,043 
Total assets supporting experience-rated contractholder liabilities(4)$22,809 $24,027 $22,438 $24,115 
__________ 
(1)Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(2)Includes collateralized loan obligations, auto loans, education loans, home equity and other asset types. Collateralized loan obligations at fair value were $1,530 million and $1,102 million as of March 31, 2021 and December 31, 2020, respectively, all of which were rated AAA.
(3)As a percentage of amortized cost, 94% of the portfolio was considered high or highest quality based on NAIC or equivalent ratings, as of both March 31, 2021 and December 31, 2020.
(4)As a percentage of amortized cost, 79% of the portfolio consisted of public securities as of both March 31, 2021 and December 31, 2020.
Securities Concentrations of Credit Risk
As of the dates indicated, the Company’s exposure to concentrations of credit risk of single issuers greater than 10% of the Company’s equity included securities of the U.S. government and certain U.S. government agencies and securities guaranteed by the U.S. government, as well as the securities disclosed below:
 
 March 31, 2021December 31, 2020
 Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
 (in millions)
Investments in Japanese government and government agency securities:
Fixed maturities, available-for-sale$75,142 $85,813 $80,273 $92,764 
Fixed maturities, held-to-maturity850 1,082 912 1,173 
Fixed maturities, trading23 23 25 25 
Assets supporting experience-rated contractholder liabilities830 829 849 855 
Total$76,845 $87,747 $82,059 $94,817 
Commercial Mortgage and Other Loans
The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated:
 
 March 31, 2021December 31, 2020
 Amount
(in millions)
% of
Total
Amount
(in millions)
% of
Total
Commercial mortgage and agricultural property loans by property type:
Office$12,555 19.6 %$12,750 19.7 %
Retail7,233 11.3 7,326 11.3 
Apartments/Multi-Family17,642 27.6 18,330 28.3 
Industrial15,228 23.8 14,954 23.1 
Hospitality2,365 3.7 2,395 3.7 
Other4,877 7.6 4,981 7.7 
Total commercial mortgage loans59,900 93.6 60,736 93.8 
Agricultural property loans4,094 6.4 4,048 6.2 
Total commercial mortgage and agricultural property loans63,994 100.0 %64,784 100.0 %
Allowance for credit losses(217)(227)
Total net commercial mortgage and agricultural property loans63,777 64,557 
Other loans:
Uncollateralized loans583 655 
Residential property loans86 101 
Other collateralized loans115 120 
Total other loans784 876 
Allowance for credit losses(7)(8)
Total net other loans777 868 
Total net commercial mortgage and other loans(1)$64,554 $65,425 
__________ 
(1)Includes loans held for sale which are carried at fair value and are collateralized primarily by apartment complexes. As of March 31, 2021 and December 31, 2020, the net carrying value of these loans was $500 million and $1,092 million, respectively.
Allowance for Credit Losses
The following table sets forth the activity in the allowance for credit losses for commercial mortgage and other loans, as of the dates indicated:
Three Months Ended March 31, 2021
 Commercial
Mortgage
Loans
Agricultural
Property
Loans
Residential
Property
Loans
Other
Collateralized
Loans
Uncollateralized
Loans
Total
(in millions)
Allowance, beginning of period$218 $$$$$235 
Addition to (release of) allowance for expected losses(9)(1)(10)
Other(1)(1)
Allowance, end of period$209 $$$$$224 
 
Three Months Ended March 31, 2020
 Commercial
Mortgage
Loans
Agricultural
Property
Loans
Residential
Property
Loans
Other
Collateralized
Loans
Uncollateralized
Loans
Total
(in millions)
Allowance, beginning of period$114 $$$$$121 
Cumulative effect of adoption of ASU 2016-13110 115 
Addition to (release of) allowance for expected losses
Other
Allowance, end of period$225 $$$$$240 
Financing Receivable Credit Quality Indicators The following tables set forth key credit quality indicators based upon the recorded investment gross of allowance for credit losses, as of the dates indicated:
March 31, 2021
Amortized Cost by Origination Year
20212020201920182017PriorTotal
(in millions)
Commercial Mortgage Loans
Loan-to-Value Ratio:
0%-59.99%$446 $504 $2,614 $3,248 $3,714 $17,917 $28,443 
60%-69.99%644 2,177 4,885 4,189 2,480 6,459 20,834 
70%-79.99%697 2,219 2,534 1,509 911 2,156 10,026 
80% or greater61 69 458 597 
Total$1,793 $4,900 $10,036 $9,007 $7,174 $26,990 $59,900 
Debt Service Coverage Ratio:
Greater or Equal to 1.2x$1,682 $4,780 $9,246 $8,539 $6,911 $24,234 $55,392 
1.0 - 1.2x111 113 666 380 261 2,054 3,585 
Less than 1.0x124 88 702 923 
Total$1,793 $4,900 $10,036 $9,007 $7,174 $26,990 $59,900 
Agricultural Property Loans
Loan-to-Value Ratio:
0%-59.99%$394 $951 $490 $345 $392 $1,414 $3,986 
60%-69.99%10 51 39 108 
70%-79.99%
80% or greater
Total$399 $961 $541 $384 $395 $1,414 $4,094 
Debt Service Coverage Ratio:
Greater or Equal to 1.2x$397 $939 $540 $376 $336 $1,301 $3,889 
1.0 - 1.2x22 59 44 129 
Less than 1.0x69 76 
Total$399 $961 $541 $384 $395 $1,414 $4,094 
December 31, 2020
Amortized Cost by Origination Year
20202019201820172016PriorTotal
(in millions)
Commercial Mortgage Loans
Loan-to-Value Ratio:
0%-59.99%$828 $2,693 $3,217 $3,854 $3,223 $15,360 $29,175 
60%-69.99%2,678 4,981 4,291 2,239 2,667 4,058 20,914 
70%-79.99%2,492 2,587 1,500 1,057 918 1,409 9,963 
80% or greater23 61 69 23 505 684 
Total$6,021 $10,264 $9,069 $7,219 $6,831 $21,332 $60,736 
Debt Service Coverage Ratio:
Greater or Equal to 1.2x$5,901 $9,429 $8,587 $6,954 $6,382 $18,904 $56,157 
1.0 - 1.2x118 711 383 263 384 1,719 3,578 
Less than 1.0x124 99 65 709 1,001 
Total$6,021 $10,264 $9,069 $7,219 $6,831 $21,332 $60,736 
Agricultural Property Loans
Loan-to-Value Ratio:
0%-59.99%$956 $494 $349 $527 $367 $1,254 $3,947 
60%-69.99%51 39 101 
70%-79.99%
80% or greater
Total$964 $545 $388 $530 $367 $1,254 $4,048 
Debt Service Coverage Ratio:
Greater or Equal to 1.2x$941 $544 $381 $468 $308 $1,202 $3,844 
1.0 - 1.2x23 59 40 124 
Less than 1.0x58 12 80 
Total$964 $545 $388 $530 $367 $1,254 $4,048 
Aging of Past Due Commercial Mortgage and Other Loans and Nonaccrual Status
The following tables set forth an aging of past due commercial mortgage and other loans based upon the recorded investment gross of allowance for credit losses, as well as the amount of commercial mortgage and other loans on non-accrual status, as of the dates indicated:
 
 March 31, 2021
 Current30-59 Days
Past Due
60-89 Days
Past Due
90 Days or More Past Due(1)Total Past
Due
Total
Loans
Non-Accrual
Status(2)
 (in millions)
Commercial mortgage loans$59,898 $$$$$59,900 $
Agricultural property loans4,073 14 21 4,094 14 
Residential property loans84 86 
Other collateralized loans115 115 
Uncollateralized loans583 583 
Total$64,753 $10 $$15 $25 $64,778 $20 
__________
(1)As of March 31, 2021, there were no loans in this category accruing interest.
(2)For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.

 December 31, 2020
 Current30-59 Days
Past Due
60-89 Days
Past Due
90 Days or More Past Due(1)Total Past
Due
Total
Loans
Non-Accrual
Status(2)
 (in millions)
Commercial mortgage loans$60,614 $$119 $$122 $60,736 $
Agricultural property loans3,996 37 15 52 4,048 15 
Residential property loans99 101 
Other collateralized loans120 120 
Uncollateralized loans655 655 
Total$65,484 $41 $119 $16 $176 $65,660 $21 
__________
(1)As of December 31, 2020, there were no loans in this category accruing interest.
(2)For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.
Other Invested Assets
The following table sets forth the composition of “Other invested assets,” as of the dates indicated:
March 31, 2021December 31, 2020
 (in millions)
LPs/LLCs:
Equity method:
Private equity(1)$4,735 $4,311 
Hedge funds2,732 2,451 
Real estate-related(1)2,008 1,985 
Subtotal equity method9,475 8,747 
Fair value:
Private equity1,861 1,786 
Hedge funds2,199 2,036 
Real estate-related319 314 
Subtotal fair value4,379 4,136 
Total LPs/LLCs13,854 12,883 
Real estate held through direct ownership(2)1,877 2,027 
Derivative instruments1,869 1,915 
Other(3)1,263 1,300 
Total other invested assets$18,863 $18,125 
_________ 
(1)Prior period amounts have been updated to conform to current period presentation.
(2)As of March 31, 2021 and December 31, 2020, real estate held through direct ownership had mortgage debt of $354 million and $409 million, respectively.
(3)Primarily includes strategic investments made by investment management operations, leveraged leases and member and activity stock held in the Federal Home Loan Banks of New York and Boston. For additional information regarding the Company’s holdings in the Federal Home Loan Banks of New York and Boston, see Note 17 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.
Accrued Investment Income
The following table sets forth the composition of “Accrued investment income,” as of the dates indicated:
 March 31, 2021December 31, 2020
 (in millions)
Fixed maturities$2,558 $2,676 
Equity securities
Commercial mortgage and other loans196 205 
Policy loans277 274 
Other invested assets21 27 
Short-term investments and cash equivalents
Total accrued investment income$3,063 $3,193 
Net Investment Income
The following table sets forth “Net investment income” by investment type, for the periods indicated:
 
 Three Months Ended
March 31,
 20212020
 (in millions)
Fixed maturities, available-for-sale(1)$2,999 $3,112 
Fixed maturities, held-to-maturity(1)58 59 
Fixed maturities, trading 24 34 
Assets supporting experience-rated contractholder liabilities159 184 
Equity securities23 28 
Commercial mortgage and other loans617 640 
Policy loans145 153 
Other invested assets516 131 
Short-term investments and cash equivalents10 87 
Gross investment income4,551 4,428 
Less: investment expenses(169)(226)
Net investment income$4,382 $4,202 
__________ 
(1)Includes income on credit-linked notes which are reported on the same financial statement line items as related surplus notes, as conditions are met for right to offset.
Realized Investment Gains (Losses), Net
The following table sets forth “Realized investment gains (losses), net” by investment type, for the periods indicated:
 
 Three Months Ended
March 31,
 20212020
 (in millions)
Fixed maturities(1)$1,216 $158 
Commercial mortgage and other loans30 22 
Investment real estate52 (1)
LPs/LLCs(3)
Derivatives775 1,492 
Other(1)
Realized investment gains (losses), net$2,079 $1,667 
__________ 
(1)Includes fixed maturity securities classified as available-for-sale and held-to-maturity and excludes fixed maturity securities classified as trading.
Net Unrealized Gains (Losses) on Investment
The following table sets forth net unrealized gains (losses) on investments, as of the dates indicated:
March 31, 2021December 31, 2020
 (in millions)
Fixed maturity securities, available-for-sale with an allowance$(5)$(25)
Fixed maturity securities, available-for-sale without an allowance37,610 58,593 
Derivatives designated as cash flow hedges(1)(159)(168)
Derivatives designated as fair value hedges(1)12 10 
Other investments(2)(9)
Net unrealized gains (losses) on investments$37,449 $58,417 
__________ 
(1)For additional information on cash flow and fair value hedges, see Note 5.
(2)As of March 31, 2021, there were no net unrealized losses on held-to-maturity securities that were previously transferred from available-for-sale. Includes net unrealized gains on certain joint ventures that are strategic in nature and are included in “Other assets.”
Repurchase Agreements and Securities Lending The following table sets forth the composition of “Securities sold under agreements to repurchase,” as of the dates indicated:
March 31, 2021December 31, 2020
Remaining Contractual Maturities of the AgreementsRemaining Contractual Maturities of the Agreements
 Overnight & ContinuousUp to 30 DaysTotal  Overnight & ContinuousUp to 30 DaysTotal
(in millions)
U.S. Treasury securities and obligations of U.S.
government authorities and agencies
$8,451 $485 $8,936 $9,548 $546 $10,094 
Commercial mortgage-backed securities131 131 463 463 
Residential mortgage-backed securities317 317 337 337 
Total securities sold under agreements to repurchase(1)
$8,899 $485 $9,384 $10,348 $546 $10,894 
__________ 
(1)The Company did not have any agreements with remaining contractual maturities greater than thirty days, as of the dates indicated.

The following table sets forth the composition of “Cash collateral for loaned securities” which represents the liability to return cash collateral received for the following types of securities loaned, as of the dates indicated:
March 31, 2021December 31, 2020
Remaining Contractual Maturities of the AgreementsRemaining Contractual Maturities of the Agreements
 Overnight & ContinuousUp to 30 DaysTotal  Overnight & ContinuousUp to 30 DaysTotal
(in millions)
Obligations of U.S. states and their political
subdivisions
$87 $$87 $108 $$108 
Foreign government bonds240 240 426 426 
U.S. public corporate securities3,294 3,294 2,360 2,360 
Foreign public corporate securities801 801 567 567 
Equity securities251 251 38 38 
Total cash collateral for loaned securities(1)$4,673 $$4,673 $3,499 $$3,499 
__________ 
(1)The Company did not have any agreements with remaining contractual maturities greater than thirty days, as of the dates indicated.