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Investments | 3 Months Ended
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Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract] |
Investments | Fixed Maturity Securities At March 31, 2018 and December 31, 2017, all fixed maturity securities were classified as available-for-sale. The amortized cost and fair values of securities by security type are shown as follows:
| March 31, 2018
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
| (in millions of dollars)
United States Government and Government Agencies and Authorities | $ | 1,411.0 |  |  | $ | 146.4 |  |  | $ | 11.1 |  |  | $ | 1,546.3 |
States, Municipalities, and Political Subdivisions | 2,016.6 |  |  | 343.2 |  |  | 2.5 |  |  | 2,357.3 |
Foreign Governments | 692.6 |  |  | 181.9 |  |  | 0.8 |  |  | 873.7 |
Public Utilities | 6,919.6 |  |  | 1,089.7 |  |  | 27.6 |  |  | 7,981.7 |
Mortgage/Asset-Backed Securities | 1,776.4 |  |  | 81.1 |  |  | 14.7 |  |  | 1,842.8 |
All Other Corporate Bonds | 27,296.7 |  |  | 2,796.7 |  |  | 236.4 |  |  | 29,857.0 |
Redeemable Preferred Stocks | 39.0 |  |  | 2.3 |  |  | — |  |  | 41.3 |
Total Fixed Maturity Securities | $ | 40,151.9 |  |  | $ | 4,641.3 |  |  | $ | 293.1 |  |  | $ | 44,500.1 |
| December 31, 2017
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
| (in millions of dollars)
United States Government and Government Agencies and Authorities | $ | 1,311.1 |  |  | $ | 176.1 |  |  | $ | 4.7 |  |  | $ | 1,482.5 |
States, Municipalities, and Political Subdivisions | 1,942.8 |  |  | 395.4 |  |  | 1.3 |  |  | 2,336.9 |
Foreign Governments | 673.0 |  |  | 191.3 |  |  | 0.4 |  |  | 863.9 |
Public Utilities | 6,952.7 |  |  | 1,296.4 |  |  | 12.6 |  |  | 8,236.5 |
Mortgage/Asset-Backed Securities | 1,873.2 |  |  | 105.1 |  |  | 4.7 |  |  | 1,973.6 |
All Other Corporate Bonds | 26,988.7 |  |  | 3,633.5 |  |  | 99.8 |  |  | 30,522.4 |
Redeemable Preferred Stocks | 39.0 |  |  | 3.0 |  |  | — |  |  | 42.0 |
Total Fixed Maturity Securities | $ | 39,780.5 |  |  | $ | 5,800.8 |  |  | $ | 123.5 |  |  | $ | 45,457.8 |
The following charts indicate the length of time our fixed maturity securities have been in a gross unrealized loss position.
| March 31, 2018
| Less Than 12 Months |  | 12 Months or Greater
| Fair Value |  | Gross Unrealized Loss |  | Fair Value |  | Gross Unrealized Loss
| (in millions of dollars)
United States Government and Government Agencies and Authorities | $ | 178.4 |  |  | $ | 8.0 |  |  | $ | 57.5 |  |  | $ | 3.1 |
States, Municipalities, and Political Subdivisions | 134.3 |  |  | 1.4 |  |  | 24.2 |  |  | 1.1 |
Foreign Governments | 38.8 |  |  | 0.8 |  |  | — |  |  | — |
Public Utilities | 400.7 |  |  | 17.8 |  |  | 152.2 |  |  | 9.8 |
Mortgage/Asset-Backed Securities | 366.3 |  |  | 9.4 |  |  | 114.1 |  |  | 5.3 |
All Other Corporate Bonds | 5,376.8 |  |  | 149.7 |  |  | 745.2 |  |  | 86.7 |
Total Fixed Maturity Securities | $ | 6,495.3 |  |  | $ | 187.1 |  |  | $ | 1,093.2 |  |  | $ | 106.0 |
| December 31, 2017
| Less Than 12 Months |  | 12 Months or Greater
| Fair Value |  | Gross Unrealized Loss |  | Fair Value |  | Gross Unrealized Loss
| (in millions of dollars)
United States Government and Government Agencies and Authorities | $ | 157.9 |  |  | $ | 3.0 |  |  | $ | 58.8 |  |  | $ | 1.8 |
States, Municipalities, and Political Subdivisions | 45.7 |  |  | 0.5 |  |  | 22.3 |  |  | 0.7 |
Foreign Governments | 13.2 |  |  | 0.4 |  |  | — |  |  | — |
Public Utilities | 213.2 |  |  | 7.9 |  |  | 133.5 |  |  | 4.7 |
Mortgage/Asset-Backed Securities | 252.5 |  |  | 1.4 |  |  | 144.7 |  |  | 3.3 |
All Other Corporate Bonds | 1,355.1 |  |  | 26.8 |  |  | 785.2 |  |  | 73.0 |
Total Fixed Maturity Securities | $ | 2,037.6 |  |  | $ | 40.0 |  |  | $ | 1,144.5 |  |  | $ | 83.5 |
The following is a distribution of the maturity dates for fixed maturity securities. The maturity dates have not been adjusted for possible calls or prepayments.
| March 31, 2018
| Total Amortized Cost |  | Unrealized Gain Position |  | Unrealized Loss Position
|  | Gross Gain |  | Fair Value |  | Gross Loss |  | Fair Value
| (in millions of dollars)
1 year or less | $ | 1,694.9 |  |  | $ | 23.4 |  |  | $ | 1,645.0 |  |  | $ | 4.1 |  |  | $ | 69.2 |
Over 1 year through 5 years | 5,665.0 |  |  | 372.0 |  |  | 5,680.4 |  |  | 22.3 |  |  | 334.3 |
Over 5 years through 10 years | 12,273.8 |  |  | 903.8 |  |  | 9,124.4 |  |  | 138.1 |  |  | 3,915.1 |
Over 10 years | 18,741.8 |  |  | 3,261.0 |  |  | 19,099.4 |  |  | 113.9 |  |  | 2,789.5 |
| 38,375.5 |  |  | 4,560.2 |  |  | 35,549.2 |  |  | 278.4 |  |  | 7,108.1 |
Mortgage/Asset-Backed Securities | 1,776.4 |  |  | 81.1 |  |  | 1,362.4 |  |  | 14.7 |  |  | 480.4 |
Total Fixed Maturity Securities | $ | 40,151.9 |  |  | $ | 4,641.3 |  |  | $ | 36,911.6 |  |  | $ | 293.1 |  |  | $ | 7,588.5 |
| December 31, 2017
| Total Amortized Cost |  | Unrealized Gain Position |  | Unrealized Loss Position
|  | Gross Gain |  | Fair Value |  | Gross Loss |  | Fair Value
| (in millions of dollars)
1 year or less | $ | 1,625.1 |  |  | $ | 30.9 |  |  | $ | 1,638.8 |  |  | $ | 3.1 |  |  | $ | 14.1 |
Over 1 year through 5 years | 5,579.9 |  |  | 453.6 |  |  | 5,810.9 |  |  | 18.5 |  |  | 204.1 |
Over 5 years through 10 years | 12,091.1 |  |  | 1,169.8 |  |  | 11,916.5 |  |  | 53.2 |  |  | 1,291.2 |
Over 10 years | 18,611.2 |  |  | 4,041.4 |  |  | 21,333.1 |  |  | 44.0 |  |  | 1,275.5 |
| 37,907.3 |  |  | 5,695.7 |  |  | 40,699.3 |  |  | 118.8 |  |  | 2,784.9 |
Mortgage/Asset-Backed Securities | 1,873.2 |  |  | 105.1 |  |  | 1,576.4 |  |  | 4.7 |  |  | 397.2 |
Total Fixed Maturity Securities | $ | 39,780.5 |  |  | $ | 5,800.8 |  |  | $ | 42,275.7 |  |  | $ | 123.5 |  |  | $ | 3,182.1 |
The following chart depicts an analysis of our fixed maturity security portfolio between investment-grade and below-investment-grade categories as of March 31, 2018:
|  |  |  |  | Gross Unrealized Loss
| Fair Value |  | Gross Unrealized Gain |  | Amount |  | Percent of Total Gross Unrealized Loss
| (in millions of dollars) |  |
Investment-Grade | $ | 41,233.8 |  |  | $ | 4,527.8 |  |  | $ | 198.7 |  |  | 67.8 | %
Below-Investment-Grade | 3,266.3 |  |  | 113.5 |  |  | 94.4 |  |  | 32.2 |
Total Fixed Maturity Securities | $ | 44,500.1 |  |  | $ | 4,641.3 |  |  | $ | 293.1 |  |  | 100.0 | %
The unrealized losses on investment-grade fixed maturity securities principally relate to changes in interest rates or changes in market or sector credit spreads which occurred subsequent to the acquisition of the securities. Below-investment-grade fixed maturity securities are generally more likely to develop credit concerns than investment-grade securities. At March 31, 2018, the unrealized losses in our below-investment-grade fixed maturity securities were generally due to credit spreads in certain industries or sectors and, to a lesser extent, credit concerns related to specific securities. For each specific security in an unrealized loss position, we believe that there are positive factors which mitigate credit concerns and that the securities for which we have not recorded an other-than-temporary impairment will recover in value. As of March 31, 2018, we held 413 individual investment-grade fixed maturity securities and 88 individual below-investment-grade fixed maturity securities that were in an unrealized loss position, of which 141 investment-grade fixed maturity securities and 20 below-investment-grade fixed maturity securities had been in an unrealized loss position continuously for over one year. In determining when a decline in fair value below amortized cost of a fixed maturity security is other than temporary, we evaluate the following factors:
• | Whether we expect to recover the entire amortized cost basis of the security
• | Whether we intend to sell the security or will be required to sell the security before the recovery of its amortized cost basis
• | Whether the security is current as to principal and interest payments
• | The significance of the decline in value
• | The time period during which there has been a significant decline in value
• | Current and future business prospects and trends of earnings
• | The valuation of the security's underlying collateral
• | Relevant industry conditions and trends relative to their historical cycles
• | Market conditions
• | Rating agency and governmental actions
• | Bid and offering prices and the level of trading activity
• | Adverse changes in estimated cash flows for securitized investments
• | Changes in fair value subsequent to the balance sheet date
• | Any other key measures for the related security
While determining other-than-temporary impairments is a judgmental area, we utilize a formal, well-defined, and disciplined process to monitor and evaluate our fixed income investment portfolio, supported by issuer specific research and documentation as of the end of each period. The process results in a thorough evaluation of problem investments and the recording of losses on a timely basis for investments determined to have an other-than-temporary impairment. We held no fixed maturity securities as of March 31, 2018 or December 31, 2017 for which a portion of an other-than-temporary impairment was recognized in accumulated other comprehensive income. At March 31, 2018, we had commitments of $213.5 million to fund private placement fixed maturity securities, the amount of which may or may not be funded. Variable Interest Entities We invest in variable interests issued by variable interest entities. These investments include tax credit partnerships, private equity partnerships, and special purpose entities. For those variable interests that are not consolidated in our financial statements, we are not the primary beneficiary because we have neither the power to direct the activities that are most significant to economic performance nor the responsibility to absorb a majority of the expected losses. The determination of whether we are the primary beneficiary is performed at the time of our initial investment and at the date of each subsequent reporting period. As of March 31, 2018, the carrying amount of our variable interest entity investments that are not consolidated in our financial statements was $532.4 million, comprised of $119.1 million of tax credit partnerships and $413.3 million of private equity partnerships. At December 31, 2017, the carrying amount of our variable interest entity investments that are not consolidated in our financial statements was $535.4 million, comprised of $128.2 million of tax credit partnerships and $407.2 million of private equity partnerships. These variable interest entity investments are reported as other long-term investments in our consolidated balance sheets. The Company invests in tax credit partnerships primarily for the receipt of income tax credits and tax benefits derived from passive losses on the investments. Amounts recognized in the consolidated statements of income are as follows:
| Three Months Ended March 31
| 2018 |  | 2017
| (in millions of dollars)
Income Tax Credits | $ | 10.4 |  |  | $ | 10.4 |
Amortization, net of tax | (7.0 | ) |  | (5.8 | )
Income Tax Benefit | $ | 3.4 |  |  | $ | 4.6 |
Contractually, we are a limited partner in these tax credit partnerships, and our maximum exposure to loss is limited to the carrying value of our investment, which includes $3.7 million of unfunded unconditional commitments at March 31, 2018. See Note 3 for commitments to fund private equity partnerships. We are the sole beneficiary of a special purpose entity which is consolidated in our financial statements. This entity is a securitized asset trust containing a highly rated bond for principal protection which we contributed into the trust at the time it was established. There are no restrictions on the asset held in this trust, and the trust is free to dispose of the asset at any time. The fair values of the bond were $154.4 million and $154.1 million as of March 31, 2018 and December 31, 2017, respectively. The bond is reported as a component of fixed maturity securities in our consolidated balance sheets. Mortgage Loans Our mortgage loan portfolio is well diversified by both geographic region and property type to reduce risk of concentration. All of our mortgage loans are collateralized by commercial real estate. When issuing a new loan, our general policy is not to exceed a loan-to-value ratio, or the ratio of the loan balance to the estimated fair value of the underlying collateral, of 75 percent. We update the loan-to-value ratios at least every three years for each loan, and properties undergo a general inspection at least every two years. Our general policy for newly issued loans is to have a debt service coverage ratio greater than 1.25 times on a normalized 25 year amortization period. We update our debt service coverage ratios annually. Mortgage loans by property type and geographic region are presented below.
| March 31, 2018 |  | December 31, 2017
| (in millions of dollars)
| Carrying |  | Percent of |  | Carrying |  | Percent of
| Amount |  | Total |  | Amount |  | Total
Property Type |  |  |  |  |  |  |
Apartment | $ | 380.0 |  |  | 17.3 | % |  | $ | 360.0 |  |  | 16.3 | %
Industrial | 584.9 |  |  | 26.6 |  |  | 601.2 |  |  | 27.2 |
Office | 674.5 |  |  | 30.6 |  |  | 692.3 |  |  | 31.3 |
Retail | 529.5 |  |  | 24.1 |  |  | 527.6 |  |  | 23.8 |
Other | 31.9 |  |  | 1.4 |  |  | 32.1 |  |  | 1.4 |
Total | $ | 2,200.8 |  |  | 100.0 | % |  | $ | 2,213.2 |  |  | 100.0 | %
Region |  |  |  |  |  |  |
New England | $ | 55.2 |  |  | 2.5 | % |  | $ | 56.1 |  |  | 2.5 | %
Mid-Atlantic | 154.5 |  |  | 7.0 |  |  | 155.5 |  |  | 7.0 |
East North Central | 291.3 |  |  | 13.2 |  |  | 282.0 |  |  | 12.8 |
West North Central | 208.4 |  |  | 9.5 |  |  | 210.1 |  |  | 9.5 |
South Atlantic | 481.7 |  |  | 21.9 |  |  | 494.4 |  |  | 22.3 |
East South Central | 88.1 |  |  | 4.0 |  |  | 88.8 |  |  | 4.0 |
West South Central | 245.4 |  |  | 11.2 |  |  | 247.4 |  |  | 11.2 |
Mountain | 254.9 |  |  | 11.6 |  |  | 251.2 |  |  | 11.4 |
Pacific | 421.3 |  |  | 19.1 |  |  | 427.7 |  |  | 19.3 |
Total | $ | 2,200.8 |  |  | 100.0 | % |  | $ | 2,213.2 |  |  | 100.0 | %
We evaluate each of our mortgage loans individually for impairment and assign an internal credit quality rating based on a comprehensive rating system used to evaluate the credit risk of the loan. The factors we use to derive our internal credit ratings may include the following:
• | Loan-to-value ratio
• | Debt service coverage ratio based on current operating income
• | Property location, including regional economics, trends and demographics
• | Age, condition, and construction quality of property
• | Current and historical occupancy of property
• | Lease terms relative to market
• | Tenant size and financial strength
• | Borrower's financial strength
• | Borrower's equity in transaction
• | Additional collateral, if any
Although all available and applicable factors are considered in our analysis, loan-to-value and debt service coverage ratios are the most critical factors in determining whether we will initially issue the loan and also in assigning values and determining impairment. We assign an overall rating to each loan using an internal rating scale of Aa (highest quality) to B (lowest quality). We review and adjust, as needed, our internal credit quality ratings on an annual basis. This review process is performed more frequently for mortgage loans deemed to have a higher risk of delinquency. Mortgage loans, sorted by the applicable credit quality indicators, are as follows:
| March 31, 2018 |  | December 31, 2017
| (in millions of dollars)
Internal Rating |  |  |
Aa | $ | 0.3 |  |  | $ | 0.4 |
A | 481.9 |  |  | 445.7 |
Baa | 1,704.4 |  |  | 1,753.0 |
Ba | 14.2 |  |  | 14.1 |
Total | $ | 2,200.8 |  |  | $ | 2,213.2 |
Loan-to-Value Ratio |  |  |
<= 65% | $ | 1,082.6 |  |  | $ | 1,101.7 |
> 65% <= 75% | 1,053.8 |  |  | 1,041.6 |
> 75% <= 85% | 40.2 |  |  | 49.3 |
> 85% | 24.2 |  |  | 20.6 |
Total | $ | 2,200.8 |  |  | $ | 2,213.2 |
There were no troubled debt restructurings during the three months ended March 31, 2018 or 2017. At March 31, 2018, we held one mortgage loan with a carrying value of $3.2 million that was greater than 90 days past due regarding principal and/or interest payments. At December 31, 2017, we held no mortgage loans that were greater than 90 days past due regarding principal and/or interest payments. There have been no changes to our accounting policies or methodology from the prior period regarding estimating the allowance for credit losses on our mortgage loans. As of March 31, 2018 and December 31, 2017, we had no allowance for credit losses, and there was no activity in the allowance for credit losses during the three months ended March 31, 2018 or 2017. Our average investment in impaired mortgage loans was $1.1 million for the three months ended March 31, 2018. We did not hold any impaired mortgage loans during the three months ended March 31, 2017, nor did we recognize any interest income on mortgage loans subsequent to impairment for the three months ended March 31, 2018 or 2017. At March 31, 2018, we had commitments of $78.9 million to fund certain commercial mortgage loans, the amount of which may or may not be funded. Transfers of Financial Assets To manage our cash position more efficiently, we may enter into repurchase agreements with unaffiliated financial institutions. We generally use repurchase agreements as a means to finance the purchase of invested assets or for short-term general business purposes until projected cash flows become available from our operations or existing investments. Our repurchase agreements are typically outstanding for less than 30 days. We post collateral through our repurchase agreement transactions whereby the counterparty commits to purchase securities with the agreement to resell them to us at a later, specified date. The fair value of collateral posted is generally 102 percent of the cash received. Our investment policy also permits us to lend fixed maturity securities to unaffiliated financial institutions in short-term securities lending agreements. These agreements increase our investment income with minimal risk. Our securities lending policy requires that a minimum of 102 percent of the fair value of the securities loaned be maintained as collateral. We may receive cash and/or securities as collateral under these agreements. Cash received as collateral is typically reinvested in short-term investments. If securities are received as collateral, we are not permitted to sell or re-post them. As of March 31, 2018, the carrying amount of fixed maturity securities loaned to third parties under our securities lending program was $104.2 million, for which we received collateral in the form of cash and securities of $16.0 million and $94.3 million, respectively. As of December 31, 2017, the carrying amount of fixed maturity securities loaned to third parties under our securities lending program was $159.2 million, for which we received collateral in the form of cash and securities of $30.5 million and $135.6 million, respectively. We had no outstanding repurchase agreements at March 31, 2018 or December 31, 2017. The remaining contractual maturities of our securities lending agreements disaggregated by class of collateral pledged are as follows:
|  | March 31, 2018 |  | December 31, 2017
|  | Overnight and Continuous
|  | (in millions of dollars)
United States Government and Government Agencies and Authorities |  | $ | 1.0 |  |  | $ | 0.2 |
Public Utilities |  | — |  |  | 0.5 |
All Other Corporate Bonds |  | 15.0 |  |  | 29.8 |
Total Borrowings |  | 16.0 |  |  | 30.5 |
Gross Amount of Recognized Liability for Securities Lending Transactions |  | 16.0 |  |  | 30.5 |
Amounts Related to Agreements Not Included in Offsetting Disclosure Contained Herein |  | $ | — |  |  | $ | — |
Certain of our U.S. insurance subsidiaries are members of regional FHLBs. Membership, which requires that we purchase a minimum amount of FHLB common stock on which we receive dividends, provides access to low-cost funding. Advances received from the FHLB are used for the purchase of fixed maturity securities. Additional common stock purchases may be required, based on the amount of funds we borrow from the FHLBs. The carrying value of common stock owned, collateral posted, and advances received are as follows:
|  | March 31, 2018 |  | December 31, 2017
|  | (in millions of dollars)
Carrying Value of FHLB Common Stock |  | $ | 34.1 |  |  | $ | 34.1 |
Advances from FHLB |  | 350.0 |  |  | 350.0 |
Carrying Value of Collateral Posted to FHLB |  |  |  |
Fixed Maturity Securities |  | $ | 268.5 |  |  | $ | 213.3 |
Commercial Mortgage Loans |  | 321.6 |  |  | 331.5 |
Total Carrying Value of Collateral Posted to FHLB |  | $ | 590.1 |  |  | $ | 544.8 |
Offsetting of Financial Instruments We enter into master netting agreements with each of our derivatives counterparties. These agreements provide for conditional rights of set-off upon the occurrence of an early termination event. An early termination event is considered a default, and it allows the non-defaulting party to offset its contracts in a loss position against any gain positions or payments due to the defaulting party. Under our agreements, default type events are defined as failure to pay or deliver as contractually agreed, misrepresentation, bankruptcy, or merger without assumption. See Note 5 for further discussion of collateral related to our derivative contracts. We have securities lending agreements with unaffiliated financial institutions that post collateral to us in return for the use of our fixed maturity securities. A right of set-off exists that allows us to keep and apply collateral received in the event of default by the counterparty. Default within a securities lending agreement would typically occur if the counterparty failed to return the securities borrowed from us as contractually agreed. In addition, if we default by not returning collateral received, the counterparty has a right of set-off against our securities or any other amounts due to us. Shown below are our financial instruments that either meet the accounting requirements that allow them to be offset in our balance sheets or that are subject to an enforceable master netting arrangement or similar agreement. Our accounting policy is to not offset these financial instruments in our balance sheets. Net amounts disclosed below have been reduced by the amount of collateral pledged to or received from our counterparties.
|  | March 31, 2018
|  | Gross Amount |  |  |  |  |  | Gross Amount Not |  |
|  | of Recognized |  | Gross Amount |  | Net Amount |  | Offset in Balance Sheet |  |
|  | Financial |  | Offset in |  | Presented in |  | Financial |  | Cash |  | Net
|  | Instruments |  | Balance Sheet |  | Balance Sheet |  | Instruments |  | Collateral |  | Amount
|  | (in millions of dollars)
Financial Assets: |  |
Derivatives |  | $ | 21.5 |  |  | $ | — |  |  | $ | 21.5 |  |  | $ | (5.4 | ) |  | $ | (16.1 | ) |  | $ | — |
Securities Lending |  | 104.2 |  |  | — |  |  | 104.2 |  |  | (88.2 | ) |  | (16.0 | ) |  | — |
Total |  | $ | 125.7 |  |  | $ | — |  |  | $ | 125.7 |  |  | $ | (93.6 | ) |  | $ | (32.1 | ) |  | $ | — |
Financial Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  | $ | 51.4 |  |  | $ | — |  |  | $ | 51.4 |  |  | $ | (39.0 | ) |  | $ | — |  |  | $ | 12.4 |
Securities Lending |  | 16.0 |  |  | — |  |  | 16.0 |  |  | (16.0 | ) |  | — |  |  | — |
Total |  | $ | 67.4 |  |  | $ | — |  |  | $ | 67.4 |  |  | $ | (55.0 | ) |  | $ | — |  |  | $ | 12.4 |
|  | December 31, 2017
|  | Gross Amount |  |  |  |  |  | Gross Amount Not |  |
|  | of Recognized |  | Gross Amount |  | Net Amount |  | Offset in Balance Sheet |  |
|  | Financial |  | Offset in |  | Presented in |  | Financial |  | Cash |  | Net
|  | Instruments |  | Balance Sheet |  | Balance Sheet |  | Instruments |  | Collateral |  | Amount
|  | (in millions of dollars)
Financial Assets: |  |
Derivatives |  | $ | 19.5 |  |  | $ | — |  |  | $ | 19.5 |  |  | $ | (4.2 | ) |  | $ | (15.3 | ) |  | $ | — |
Securities Lending |  | 159.2 |  |  | — |  |  | 159.2 |  |  | (128.7 | ) |  | (30.5 | ) |  | — |
Total |  | $ | 178.7 |  |  | $ | — |  |  | $ | 178.7 |  |  | $ | (132.9 | ) |  | $ | (45.8 | ) |  | $ | — |
Financial Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  | $ | 52.2 |  |  | $ | — |  |  | $ | 52.2 |  |  | $ | (42.9 | ) |  | $ | — |  |  | $ | 9.3 |
Securities Lending |  | 30.5 |  |  | — |  |  | 30.5 |  |  | (30.5 | ) |  | — |  |  | — |
Total |  | $ | 82.7 |  |  | $ | — |  |  | $ | 82.7 |  |  | $ | (73.4 | ) |  | $ | — |  |  | $ | 9.3 |
Net Investment Income Net investment income reported in our consolidated statements of income is as follows:
| Three Months Ended March 31
| 2018 |  | 2017
| (in millions of dollars)
Fixed Maturity Securities | $ | 557.1 |  |  | $ | 563.7 |
Derivatives | 15.4 |  |  | 13.4 |
Mortgage Loans | 27.3 |  |  | 25.4 |
Policy Loans | 4.4 |  |  | 4.3 |
Other Long-term Investments |  |  |
Equity Securities 1 | (0.2 | ) |  | 0.3 |
Private Equity Partnerships 1 | 5.6 |  |  | 5.1 |
Other | 2.1 |  |  | 0.7 |
Short-term Investments | 3.6 |  |  | 1.9 |
Gross Investment Income | 615.3 |  |  | 614.8 |
Less Investment Expenses | 9.6 |  |  | 8.8 |
Less Investment Income on Participation Fund Account Assets | 3.4 |  |  | 3.6 |
Net Investment Income | $ | 602.3 |  |  | $ | 602.4 |
1 The net unrealized loss recognized in net investment income for the first three months of 2018 related to equity securities and private equity partnerships still held at March 31, 2018 was $2.0 million and $1.6 million, respectively. Realized Investment Gain and Loss Realized investment gains and losses are as follows:
| Three Months Ended March 31
| 2018 |  | 2017
| (in millions of dollars)
Fixed Maturity Securities |  |  |
Gross Gains on Sales | $ | 2.0 |  |  | $ | 2.4 |
Gross Losses on Sales | (1.4 | ) |  | (1.1 | )
Other-Than-Temporary Impairment Loss | (1.0 | ) |  | — |
Mortgage Loans and Other Invested Assets |  |  |
Gross Gains on Sales | — |  |  | 0.7 |
Gross Losses on Sales | — |  |  | (0.2 | )
Embedded Derivative in Modified Coinsurance Arrangement | (1.7 | ) |  | 8.6 |
All Other Derivatives | 0.7 |  |  | (0.2 | )
Foreign Currency Transactions | (0.8 | ) |  | 0.8 |
Net Realized Investment Gain (Loss) | $ | (2.2 | ) |  | $ | 11.0 |

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