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Investments
3 Months Ended
Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
5. Investments
See Note 7 for information about the fair value hierarchy for investments and the related valuation methodologies.
Fixed Maturity Securities Available-for-sale (“AFS”)
Fixed Maturity Securities AFS by Sector
The following table presents the fixed maturity securities AFS by sector at:
 
March 31, 2018
 
December 31, 2017
 
Amortized
Cost
 
Gross Unrealized
 
Estimated
Fair
Value
 
Amortized
Cost
 
Gross Unrealized
 
Estimated
Fair
Value
 
Gains
 
Temporary
Losses
 
OTTI
Losses (1)
 
Gains
 
Temporary
Losses
 
OTTI
Losses (1)
 
 
(In millions)
Fixed maturity securities: (2)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. corporate
$
21,644

 
$
1,320

 
$
276

 
$

 
$
22,688

 
$
20,647

 
$
1,822

 
$
89

 
$

 
$
22,380

U.S. government and agency
12,367

 
1,448

 
219

 

 
13,596

 
14,185

 
1,844

 
116

 

 
15,913

RMBS
7,645

 
250

 
150

 
(2
)
 
7,747

 
7,588

 
283

 
57

 
(3
)
 
7,817

Foreign corporate
6,477

 
288

 
91

 

 
6,674

 
6,457

 
376

 
62

 

 
6,771

State and political subdivision
3,567


459


18




4,008


3,573


532


6


1


4,098

CMBS
3,752

 
16

 
57

 
(1
)
 
3,712

 
3,259

 
48

 
17

 
(1
)
 
3,291

ABS
1,854

 
18

 
3

 

 
1,869

 
1,779

 
19

 
2

 

 
1,796

Foreign government
1,154

 
123

 
11

 

 
1,266

 
1,111

 
159

 
3

 

 
1,267

Total fixed maturity securities
$
58,460


$
3,922


$
825


$
(3
)

$
61,560


$
58,599


$
5,083


$
352


$
(3
)

$
63,333


__________________
(1)
Noncredit OTTI losses included in AOCI in an unrealized gain position are due to increases in estimated fair value subsequent to initial recognition of noncredit losses on such securities. See also “— Net Unrealized Investment Gains (Losses).”
(2)
Redeemable preferred stock is reported within U.S. corporate and foreign corporate fixed maturity securities. Included within fixed maturity securities are structured securities including residential mortgage-backed securities (“RMBS”), commercial mortgage-backed securities (“CMBS”) and asset-backed securities (“ABS”) (collectively, “Structured Securities”).
The Company held non-income producing fixed maturity securities with an estimated fair value of $4 million and $3 million with unrealized gains (losses) of less than ($1) million and ($2) million at March 31, 2018 and December 31, 2017, respectively.
Maturities of Fixed Maturity Securities
The amortized cost and estimated fair value of fixed maturity securities, by contractual maturity date, were as follows at March 31, 2018:
 
Due in One
Year or Less
 
Due After One
Year Through
Five Years
 
Due After
Five Years
Through Ten Years
 
Due After Ten
Years
 
Structured
Securities
 
Total Fixed
Maturity
Securities
 
(In millions)
Amortized cost
$
1,730

 
$
8,497

 
$
11,642

 
$
23,340

 
$
13,251

 
$
58,460

Estimated fair value
$
1,733

 
$
8,734

 
$
11,702

 
$
26,063

 
$
13,328

 
$
61,560


Actual maturities may differ from contractual maturities due to the exercise of call or prepayment options. Fixed maturity securities not due at a single maturity date have been presented in the year of final contractual maturity. Structured Securities are shown separately, as they are not due at a single maturity.
Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector
The following table presents the estimated fair value and gross unrealized losses of fixed maturity securities AFS in an unrealized loss position, aggregated by sector and by length of time that the securities have been in a continuous unrealized loss position at:
 
March 31, 2018
 
December 31, 2017
 
Less than 12 Months
 
Equal to or Greater
than 12 Months
 
Less than 12 Months
 
Equal to or Greater
than 12 Months
 
Estimated
Fair
Value
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Gross
Unrealized
Losses
 
(Dollars in millions)
Fixed maturity securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. corporate
$
6,900

 
$
171

 
$
1,280

 
$
105

 
$
1,762

 
$
21

 
$
1,413

 
$
68

U.S. government and agency
3,934

 
92

 
1,351

 
127

 
4,764

 
36

 
1,573

 
80

RMBS
3,194

 
81

 
1,164

 
67

 
2,308

 
13

 
1,292

 
41

Foreign corporate
1,756

 
37

 
467

 
54

 
636

 
8

 
559

 
54

State and political subdivision
463

 
11

 
102

 
7

 
171

 
3

 
106

 
4

CMBS
2,377

 
39

 
362

 
17

 
603

 
6

 
335

 
10

ABS
394

 
2

 
40

 
1

 
165

 

 
75

 
2

Foreign government
327

 
8

 
48

 
3

 
152

 
2

 
50

 
1

Total fixed maturity securities
$
19,345


$
441


$
4,814


$
381


$
10,561


$
89


$
5,403


$
260

Total number of securities in an unrealized loss position
2,105

 
 
 
583

 
 
 
903

 
 
 
619

 
 

Evaluation of AFS Securities for OTTI and Evaluating Temporarily Impaired AFS Securities
Evaluation and Measurement Methodologies
Management considers a wide range of factors about the security issuer and uses its best judgment in evaluating the cause of the decline in the estimated fair value of the security and in assessing the prospects for near-term recovery. Inherent in management’s evaluation of the security are assumptions and estimates about the operations of the issuer and its future earnings potential. Considerations used in the impairment, evaluation process include, but are not limited to: (i) the length of time and the extent to which the estimated fair value has been below amortized cost; (ii) the potential for impairments when the issuer is experiencing significant financial difficulties; (iii) the potential for impairments in an entire industry sector or sub-sector; (iv) the potential for impairments in certain economically depressed geographic locations; (v) the potential for impairments where the issuer, series of issuers or industry has suffered a catastrophic loss or has exhausted natural resources; (vi) whether the Company has the intent to sell or will more likely than not be required to sell a particular security before the decline in estimated fair value below amortized cost recovers; (vii) with respect to Structured Securities, changes in forecasted cash flows after considering the quality of underlying collateral, expected prepayment speeds, current and forecasted loss severity, consideration of the payment terms of the underlying assets backing a particular security, and the payment priority within the tranche structure of the security; (viii) the potential for impairments due to weakening of foreign currencies on non-functional currency denominated fixed maturity securities that are near maturity; and (ix) other subjective factors, including concentrations and information obtained from regulators and rating agencies.
Current Period Evaluation
Based on the Company’s current evaluation of its AFS securities in an unrealized loss position in accordance with its impairment policy, and the Company’s current intentions and assessments (as applicable to the type of security) about holding, selling and any requirements to sell these securities, the Company concluded that these securities were not other-than-temporarily impaired at March 31, 2018.
Gross unrealized losses on fixed maturity securities increased $473 million during the three months ended March 31, 2018 to $822 million. The increase in gross unrealized losses for the three months ended March 31, 2018 was primarily attributable to increasing longer-term interest rates.
At March 31, 2018, $5 million of the total $822 million of gross unrealized losses were from nine fixed maturity securities with an unrealized loss position of 20% or more of amortized cost for six months or greater.
Mortgage Loans
Mortgage Loans by Portfolio Segment
Mortgage loans are summarized as follows at:
 
March 31, 2018
 
December 31, 2017
 
Carrying
Value
 
% of
Total
 
Carrying
Value
 
% of
Total
 
(Dollars in millions)
Mortgage loans:
 
 
 
 
 
 
 
Commercial
$
7,601

 
67.8
 %
 
$
7,233

 
67.9
 %
Agricultural
2,361

 
21.1

 
2,200

 
20.7

Residential
1,188

 
10.6

 
1,138

 
10.7

Subtotal (1)
11,150

 
99.5

 
10,571

 
99.3

Valuation allowances (2)
(49
)
 
(0.4
)
 
(46
)
 
(0.4
)
Subtotal mortgage loans, net
11,101

 
99.1

 
10,525

 
98.9

Commercial mortgage loans held by CSEs - FVO
105

 
0.9

 
115

 
1.1

Total mortgage loans, net
$
11,206

 
100.0
 %
 
$
10,640

 
100.0
 %
__________________
(1)
Purchases of mortgage loans from third parties were $86 million and $420 million at March 31, 2018 and December 31, 2017, respectively, and were primarily comprised of residential mortgage loans.
(2)
The valuation allowances were primarily from collective evaluation (non-specific loan related).    
See “— Variable Interest Entities” for discussion of consolidated securitization entities (“CSEs”).
Information on commercial, agricultural and residential mortgage loans is presented in the tables below. Information on commercial mortgage loans held by CSEs - FVO is presented in Note 7. The Company elects the FVO for certain commercial mortgage loans and related long-term debt that are managed on a total return basis.
Valuation Allowance Methodology
Mortgage loans are considered to be impaired when it is probable that, based upon current information and events, the Company will be unable to collect all amounts due under the loan agreement. Specific valuation allowances are established using the same methodology for all three portfolio segments as the excess carrying value of a loan over either (i) the present value of expected future cash flows discounted at the loan’s original effective interest rate, (ii) the estimated fair value of the loan’s underlying collateral if the loan is in the process of foreclosure or otherwise collateral dependent, or (iii) the loan’s observable market price. A common evaluation framework is used for establishing non-specific valuation allowances for all loan portfolio segments; however, a separate non-specific valuation allowance is calculated and maintained for each loan portfolio segment that is based on inputs unique to each loan portfolio segment. Non-specific valuation allowances are established for pools of loans with similar risk characteristics where a property-specific or market-specific risk has not been identified, but for which the Company expects to incur a credit loss. These evaluations are based upon several loan portfolio segment-specific factors, including the Company’s experience for loan losses, defaults and loss severity, and loss expectations for loans with similar risk characteristics. These evaluations are revised as conditions change and new information becomes available.
Credit Quality of Commercial Mortgage Loans
The credit quality of commercial mortgage loans was as follows at:
 
Recorded Investment
 
 
 
 
 
Debt Service Coverage Ratios
 
 
 
% of
Total
 
Estimated
Fair
Value
 
% of
Total
 
> 1.20x
 
1.00x - 1.20x
 
< 1.00x
 
Total
 
 
(Dollars in millions)
March 31, 2018
 
 
 
 
 
 
 
 
 
 
 
 
 
Loan-to-value ratios:
 
 
 
 
 
 
 
 
 
 
 
 
 
Less than 65%
$
6,631

 
$
238

 
$
33

 
$
6,902

 
90.8
%
 
$
6,968

 
91.0
%
65% to 75%
578

 

 
38

 
616

 
8.1

 
611

 
8.0

76% to 80%
19

 
32

 
32

 
83

 
1.1

 
81

 
1.0

Total
$
7,228


$
270


$
103


$
7,601

 
100.0
%
 
$
7,660

 
100.0
%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
 
Loan-to-value ratios:
 
 
 
 
 
 
 
 
 
 
 
 
 
Less than 65%
$
6,167

 
$
293

 
$
33

 
$
6,493

 
89.7
%
 
$
6,654

 
90.0
%
65% to 75%
642

 

 
14

 
656

 
9.1

 
658

 
8.9

76% to 80%
42

 

 
9

 
51

 
0.7

 
50

 
0.7

Greater than 80%

 
9

 
24

 
33

 
0.5

 
30

 
0.4

Total
$
6,851


$
302


$
80


$
7,233

 
100.0
%
 
$
7,392

 
100.0
%

Credit Quality of Agricultural Mortgage Loans
The credit quality of agricultural mortgage loans was as follows at: 
 
March 31, 2018
 
December 31, 2017
 
Recorded
Investment
 
% of
Total
 
Recorded
Investment 
 
% of
Total
 
(Dollars in millions)
Loan-to-value ratios:
 
 
 
 
 
 
 
Less than 65%
$
2,213

 
93.7
%
 
$
2,039

 
92.7
%
65% to 75%
148

 
6.3

 
161

 
7.3

Total
$
2,361

 
100.0
%
 
$
2,200

 
100.0
%

The estimated fair value of agricultural mortgage loans was $2.4 billion and $2.2 billion at March 31, 2018 and December 31, 2017, respectively.
Credit Quality of Residential Mortgage Loans
The credit quality of residential mortgage loans was as follows at:
 
March 31, 2018
 
December 31, 2017
 
Recorded Investment
 
% of
Total
 
Recorded Investment
 
% of
Total
 
(Dollars in millions)
Performance indicators:
 
 
 
 
 
 
 
Performing
$
1,162

 
97.8
%
 
$
1,106

 
97.2
%
Nonperforming
26

 
2.2

 
32

 
2.8

Total
$
1,188

 
100.0
%
 
$
1,138

 
100.0
%

The estimated fair value of residential mortgage loans was $1.2 billion at both March 31, 2018 and December 31, 2017.
Past Due, Nonaccrual and Modified Mortgage Loans
The Company has a high quality, well performing mortgage loan portfolio, with over 99% of all mortgage loans classified as performing at both March 31, 2018 and December 31, 2017. The Company defines delinquency consistent with industry practice, when mortgage loans are past due as follows: commercial and residential mortgage loans — 60 days and agricultural mortgage loans — 90 days. The Company had no commercial or agricultural mortgage loans past due and no commercial or agricultural mortgage loans in nonaccrual status at either March 31, 2018 or December 31, 2017. The recorded investment of residential mortgage loans past due and in nonaccrual status was $26 million and $32 million at March 31, 2018 and December 31, 2017, respectively. During the three months ended March 31, 2018 and 2017, the Company did not have a significant amount of mortgage loans modified in a troubled debt restructuring.
Net Unrealized Investment Gains (Losses)
Unrealized investment gains (losses) on fixed maturity and equity securities and the effect on DAC, VOBA, deferred sales inducements (“DSI”) and future policy benefits, that would result from the realization of the unrealized gains (losses), are included in net unrealized investment gains (losses) in AOCI.
The components of net unrealized investment gains (losses), included in AOCI, were as follows:
 
March 31, 2018
 
December 31, 2017
 
(In millions)
Fixed maturity securities
$
3,089

 
$
4,722

Fixed maturity securities with noncredit OTTI losses included in AOCI
2

 
2

Total fixed maturity securities
3,091

 
4,724

Equity securities

 
39

Derivatives
150

 
231

Other
(9
)
 
(8
)
Subtotal
3,232

 
4,986

Amounts allocated from:
 
 
 
Future policy benefits
(1,725
)
 
(2,370
)
DAC and VOBA related to noncredit OTTI losses recognized in AOCI
(8
)
 
(2
)
DAC, VOBA and DSI
(207
)
 
(260
)
Subtotal
(1,940
)
 
(2,632
)
Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI
3

 
1

Deferred income tax benefit (expense)
(275
)
 
(495
)
Net unrealized investment gains (losses)
$
1,020

 
$
1,860

The changes in net unrealized investment gains (losses) were as follows:
 
Three Months
Ended   
 March 31, 2018
 
(In millions)
Balance, December 31, 2017
$
1,860

Unrealized investment gains (losses) change due to cumulative effect, net of income tax (1)
(15
)
Balance, January 1, 2018
1,845

Fixed maturity securities on which noncredit OTTI losses have been recognized

Unrealized investment gains (losses) during the period
(1,739
)
Unrealized investment gains (losses) relating to:
 
Future policy benefits
645

DAC and VOBA related to noncredit OTTI losses recognized in AOCI
(6
)
DAC, VOBA and DSI
53

Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI
2

Deferred income tax benefit (expense)
220

Balance, March 31, 2018
$
1,020

Change in net unrealized investment gains (losses)
$
(825
)

__________________
(1)
See Note 1 for more information related to the cumulative effect of change in accounting principle.
Concentrations of Credit Risk
There were no investments in any counterparty that were greater than 10% of the Company’s equity, other than the U.S. government and its agencies, at both March 31, 2018 and December 31, 2017.
Securities Lending
Elements of the securities lending program are presented below at:
 
March 31, 2018
 
December 31, 2017
 
(In millions)
Securities on loan: (1)
 
 
 
Amortized cost
$
3,333

 
$
3,085

Estimated fair value
$
3,766

 
$
3,748

Cash collateral received from counterparties (2)
$
3,777

 
$
3,791

Security collateral received from counterparties (3)
$
42

 
$
29

Reinvestment portfolio — estimated fair value
$
3,787

 
$
3,823

__________________
(1)
Included within fixed maturity securities.
(2)
Included within payables for collateral under securities loaned and other transactions.
(3)
Security collateral received from counterparties may not be sold or re-pledged, unless the counterparty is in default, and is not reflected on the consolidated financial statements.
The cash collateral liability by loaned security type and remaining tenor of the agreements were as follows at:
 
March 31, 2018
 
December 31, 2017
 
Remaining Tenor of Securities Lending Agreements
 
 
 
Remaining Tenor of Securities Lending Agreements
 
 
 
Open (1)
 
1 Month or Less
 
1 to 6 Months
 
Total
 
Open (1)
 
1 Month or Less
 
1 to 6 Months
 
Total
 
(In millions)
U.S. government and agency
$
1,253

 
$
1,414

 
$
1,110

 
$
3,777

 
$
1,626

 
$
964

 
$
1,201

 
$
3,791

__________________
(1)
The related loaned security could be returned to the Company on the next business day which would require the Company to immediately return the cash collateral.
If the Company is required to return significant amounts of cash collateral on short notice and is forced to sell securities to meet the return obligation, it may have difficulty selling such collateral that is invested in securities in a timely manner, be forced to sell securities in a volatile or illiquid market for less than what otherwise would have been realized under normal market conditions, or both. The estimated fair value of the securities on loan related to the cash collateral on open at March 31, 2018 was $1.2 billion, all of which were U.S. government and agency securities which, if put back to the Company, could be immediately sold to satisfy the cash requirement.
The reinvestment portfolio acquired with the cash collateral consisted principally of fixed maturity securities (including agency RMBS, U.S. government and agency securities, ABS, U.S. and foreign corporate securities, and non-agency RMBS) with 59% invested in agency RMBS, U.S. government and agency securities, cash equivalents, short-term investments or held in cash at March 31, 2018. If the securities on loan or the reinvestment portfolio become less liquid, the Company has the liquidity resources of most of its general account available to meet any potential cash demands when securities on loan are put back to the Company.
Invested Assets on Deposit, Held in Trust and Pledged as Collateral
Invested assets on deposit, held in trust and pledged as collateral are presented below at estimated fair value at:
 
March 31, 2018
 
December 31, 2017
 
(In millions)
Invested assets on deposit (regulatory deposits) (1)
$
8,085

 
$
8,259

Invested assets held in trust (reinsurance agreements) (2)
2,755

 
2,634

Invested assets pledged as collateral (3)
4,004

 
3,199

Total invested assets on deposit, held in trust and pledged as collateral
$
14,844


$
14,092

__________________
(1)
The Company has assets, primarily fixed maturity securities, on deposit with governmental authorities relating to certain policyholder liabilities, of which $106 million and $34 million of the assets on deposit balance represents restricted cash at March 31, 2018 and December 31, 2017, respectively.
(2)
The Company has assets, primarily fixed maturity securities, held in trust relating to certain reinsurance transactions. $20 million and $42 million of the assets held in trust balance represents restricted cash at March 31, 2018 and December 31, 2017, respectively.
(3)
The Company has pledged invested assets in connection with various agreements and transactions, including funding agreements (see Note 4 of the Notes to the Consolidated Financial Statements included in the 2017 Annual Report) and derivative transactions (see Note 6).
See “— Securities Lending” for information regarding securities on loan.
Variable Interest Entities
The Company has invested in legal entities that are VIEs. In certain instances, the Company holds both the power to direct the most significant activities of the entity, as well as an economic interest in the entity and, as such, is deemed to be the primary beneficiary or consolidator of the entity. The determination of the VIE’s primary beneficiary requires an evaluation of the contractual and implied rights and obligations associated with each party’s relationship with or involvement in the entity, an estimate of the entity’s expected losses and expected residual returns and the allocation of such estimates to each party involved in the entity.
Consolidated VIEs
Creditors or beneficial interest holders of VIEs where the Company is the primary beneficiary have no recourse to the general credit of the Company, as the Company’s obligation to the VIEs is limited to the amount of its committed investment.
The following table presents the total assets and total liabilities relating to VIEs for which the Company has concluded that it is the primary beneficiary and which are consolidated at:
 
March 31, 2018
 
December 31, 2017
 
(In millions)
CSEs: (1)
 
 
 
Assets
 
 
 
Mortgage loans (commercial mortgage loans)
$
105

 
$
115

Accrued investment income
1

 
1

Total assets
$
106


$
116

Liabilities
 
 
 
Long-term debt
$
8

 
$
11

Total liabilities
$
8


$
11

__________________
(1)
The Company consolidates entities that are structured as CMBS. The assets of these entities can only be used to settle their respective liabilities, and under no circumstances is the Company liable for any principal or interest shortfalls should any arise. The Company’s exposure was limited to that of its remaining investment in these entities of $80 million and $86 million at estimated fair value at March 31, 2018 and December 31, 2017, respectively.
Unconsolidated VIEs
The carrying amount and maximum exposure to loss relating to VIEs in which the Company holds a significant variable interest but is not the primary beneficiary and which have not been consolidated were as follows at:
 
March 31, 2018
 
December 31, 2017
 
Carrying
Amount
 
Maximum
Exposure
to Loss (1)
 
Carrying
Amount
 
Maximum
Exposure
to Loss (1)
 
(In millions)
Fixed maturity securities AFS:
 
 
 
 
 
 
 
Structured Securities (2)
$
11,284

 
$
11,284

 
$
11,136

 
$
11,136

U.S. and foreign corporate
423

 
423

 
501

 
501

Other limited partnership interests
1,541

 
2,729

 
1,509

 
2,460

Other investments (3)
83

 
91

 
71

 
79

Total
$
13,331


$
14,527


$
13,217


$
14,176

__________________
(1)
The maximum exposure to loss relating to fixed maturity securities AFS is equal to their carrying amounts or the carrying amounts of retained interests. The maximum exposure to loss relating to other limited partnership interests and real estate joint ventures is equal to the carrying amounts plus any unfunded commitments. Such a maximum loss would be expected to occur only upon bankruptcy of the issuer or investee.
(2)
For these variable interests, the Company’s involvement is limited to that of a passive investor in mortgage-backed or asset-backed securities issued by trusts that do not have substantial equity.
(3)
Other investments is comprised of real estate joint ventures and other invested assets.
As described in Note 10, the Company makes commitments to fund partnership investments in the normal course of business. Excluding these commitments, the Company did not provide financial or other support to investees designated as VIEs during both the three months ended March 31, 2018 and 2017.
Net Investment Income
The components of net investment income were as follows:

Three Months
Ended   
March 31,

2018

2017

(In millions)
Investment income:



Fixed maturity securities
$
612

 
$
592

Equity securities
2

 
2

Mortgage loans
117

 
108

Policy loans
10

 
12

Real estate joint ventures
14

 
12

Other limited partnership interests
65

 
57

Cash, cash equivalents and short-term investments
5

 
8

Other
7

 
8

Subtotal
832


799

Less: Investment expenses
42

 
42

Subtotal, net
790


757

FVO CSEs — interest income — commercial mortgage loans
2

 
2

Net investment income
$
792


$
759


See “— Variable Interest Entities” for discussion of CSEs.
See “— Related Party Investment Transactions” for discussion of related party investment expenses.
Net Investment Gains (Losses)
Components of Net Investment Gains (Losses)
The components of net investment gains (losses) were as follows:

Three Months
Ended   
March 31,
 
2018
 
2017

(In millions)
Total gains (losses) on fixed maturity securities:
 
 
 
  Fixed maturity securities — net gains (losses) on sales and disposals
$
(38
)
 
$
(37
)
 Total gains (losses) on fixed maturity securities
(38
)

(37
)
Total gains (losses) on equity securities:
 
 
 
  Equity securities — Mark to market and net gains (losses) on sales and disposals
(1
)
 

Total gains (losses) on equity securities
(1
)


Mortgage loans
(4
)
 
(3
)
Real estate joint ventures
42

 
2

Other limited partnership interests

 
(10
)
Other

 
(5
)
Subtotal
(1
)
 
(53
)
FVO CSEs:

 

Commercial mortgage loans
(3
)
 

Long-term debt — related to commercial mortgage loans

 
(1
)
Non-investment portfolio gains (losses)

 
(1
)
Subtotal
(3
)

(2
)
Total net investment gains (losses)
$
(4
)

$
(55
)

See “— Variable Interest Entities” for discussion of CSEs.
See “— Related Party Investment Transactions” for discussion of related party net investment gains (losses) related to transfers of invested assets.
Sales or Disposals and Impairments of Fixed Maturity Securities
Investment gains and losses on sales of securities are determined on a specific identification basis. Proceeds from sales or disposals of fixed maturity securities and the components of fixed maturity securities net investment gains (losses) were as shown in the table below.
 
Three Months
Ended   
March 31,
 
2018
 
2017
 
(In millions)
Proceeds
$
2,838

 
$
1,960

Gross investment gains
$
3

 
$
9

Gross investment losses
(41
)
 
(46
)
Net investment gains (losses)
$
(38
)
 
$
(37
)
Credit Loss Rollforward
The table below presents a rollforward of the cumulative credit loss component of OTTI loss recognized in earnings on fixed maturity securities still held for which a portion of the OTTI loss was recognized in OCI:
 
Three Months
Ended   
March 31,
 
2018
 
2017
 
(In millions)
Balance at January 1,
$

 
$
28

Reductions:
 
 
 
Sales (maturities, pay downs or prepayments) of securities previously impaired as credit loss OTTI

 
(18
)
Balance at March 31,
$


$
10

Related Party Investment Transactions
The Company previously transferred invested assets primarily consisting of fixed maturity securities to former affiliates, which were as follows:
 
Three Months
Ended   
March 31,
 
2018
 
2017
 
(In millions)
Estimated fair value of invested assets transferred to former affiliates
$

 
$
292

Amortized cost of invested assets transferred to former affiliates
$

 
$
294

Net investment gains (losses) recognized on transfers
$

 
$
(2
)

At March 31, 2017, the Company had $1.1 billion of loans due from MetLife, Inc., which were included in other invested assets. These loans were carried at fixed interest rates of 4.21% and 5.10%, payable semiannually, and were due on September 30, 2032 and December 31, 2033, respectively. In April 2017, these loans were satisfied in a non-cash exchange for $1.1 billion of notes due to MetLife, Inc. See Notes 3 and 10 of the Notes to the Consolidated Financial Statements included in the 2017 Annual Report.
In January 2017, Metropolitan Life Insurance Company (“MLIC”), a former affiliate, recaptured risks related to guaranteed minimum benefit guarantees on certain variable annuities being reinsured by the Company. The Company transferred cash and cash equivalents and other invested assets which are included in the table above. See Note 11 for additional information related to these transfers.
In March 2017, the Company sold an operating joint venture with a book value of $89 million to MLIC for $286 million. The operating joint venture was accounted for under the equity method and included in other invested assets. This sale resulted in an increase in additional paid-in capital of $202 million in the first quarter of 2017.
The Company receives investment administrative services from MetLife Investment Advisors, LLC (“MLIA”), a related party investment manager. The related investment administrative service charges were $23 million and $25 million for the three months ended March 31, 2018 and 2017, respectively.