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INVESTMENTS | 9 Months Ended
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Sep. 30, 2016
Investments [Abstract] |
INVESTMENTS | INVESTMENTS Investment Holdings The amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments are shown in the following tables.
| September 30, 2016
(In millions) | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities available for sale, carried at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies |  | $ | 22,563 |  |  |  |  | $ | 4,700 |  |  |  |  | $ | 23 |  |  |  |  | $ | 27,240 |  |
Municipalities |  | 223 |  |  |  |  | 44 |  |  |  |  | 2 |  |  |  |  | 265 |  |
Mortgage- and asset-backed securities |  | 969 |  |  |  |  | 45 |  |  |  |  | 3 |  |  |  |  | 1,011 |  |
Public utilities |  | 1,667 |  |  |  |  | 371 |  |  |  |  | 0 |  |  |  |  | 2,038 |  |
Sovereign and supranational |  | 943 |  |  |  |  | 205 |  |  |  |  | 0 |  |  |  |  | 1,148 |  |
Banks/financial institutions |  | 2,752 |  |  |  |  | 411 |  |  |  |  | 99 |  |  |  |  | 3,064 |  |
Other corporate |  | 4,072 |  |  |  |  | 686 |  |  |  |  | 43 |  |  |  |  | 4,715 |  |
Total yen-denominated |  | 33,189 |  |  |  |  | 6,462 |  |  |  |  | 170 |  |  |  |  | 39,481 |  |
Dollar-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government and agencies |  | 150 |  |  |  |  | 16 |  |  |  |  | 0 |  |  |  |  | 166 |  |
Municipalities |  | 929 |  |  |  |  | 162 |  |  |  |  | 3 |  |  |  |  | 1,088 |  |
Mortgage- and asset-backed securities |  | 202 |  |  |  |  | 15 |  |  |  |  | 0 |  |  |  |  | 217 |  |
Public utilities |  | 5,721 |  |  |  |  | 804 |  |  |  |  | 54 |  |  |  |  | 6,471 |  |
Sovereign and supranational |  | 355 |  |  |  |  | 95 |  |  |  |  | 0 |  |  |  |  | 450 |  |
Banks/financial institutions |  | 2,754 |  |  |  |  | 537 |  |  |  |  | 11 |  |  |  |  | 3,280 |  |
Other corporate |  | 27,629 |  |  |  |  | 2,424 |  |  |  |  | 679 |  |  |  |  | 29,374 |  |
Total dollar-denominated |  | 37,740 |  |  |  |  | 4,053 |  |  |  |  | 747 |  |  |  |  | 41,046 |  |
Total fixed maturities |  | 70,929 |  |  |  |  | 10,515 |  |  |  |  | 917 |  |  |  |  | 80,527 |  |
Perpetual securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Banks/financial institutions |  | 1,679 |  |  |  |  | 138 |  |  |  |  | 126 |  |  |  |  | 1,691 |  |
Other corporate |  | 218 |  |  |  |  | 8 |  |  |  |  | 0 |  |  |  |  | 226 |  |
Dollar-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Banks/financial institutions |  | 53 |  |  |  |  | 24 |  |  |  |  | 0 |  |  |  |  | 77 |  |
Total perpetual securities |  | 1,950 |  |  |  |  | 170 |  |  |  |  | 126 |  |  |  |  | 1,994 |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 724 |  |  |  |  | 32 |  |  |  |  | 42 |  |  |  |  | 714 |  |
Dollar-denominated |  | 545 |  |  |  |  | 28 |  |  |  |  | 9 |  |  |  |  | 564 |  |
Total equity securities |  | 1,269 |  |  |  |  | 60 |  |  |  |  | 51 |  |  |  |  | 1,278 |  |
Total securities available for sale |  | $ | 74,148 |  |  |  |  | $ | 10,745 |  |  |  |  | $ | 1,094 |  |  |  |  | $ | 83,799 |  |
| September 30, 2016
(In millions) | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities held to maturity, carried at amortized cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies |  | $ | 23,852 |  |  |  |  | $ | 7,241 |  |  |  |  | $ | 0 |  |  |  |  | $ | 31,093 |  |
Municipalities |  | 404 |  |  |  |  | 145 |  |  |  |  | 0 |  |  |  |  | 549 |  |
Mortgage- and asset-backed securities |  | 37 |  |  |  |  | 2 |  |  |  |  | 0 |  |  |  |  | 39 |  |
Public utilities |  | 3,687 |  |  |  |  | 525 |  |  |  |  | 14 |  |  |  |  | 4,198 |  |
Sovereign and supranational |  | 2,998 |  |  |  |  | 402 |  |  |  |  | 6 |  |  |  |  | 3,394 |  |
Banks/financial institutions |  | 4,544 |  |  |  |  | 271 |  |  |  |  | 25 |  |  |  |  | 4,790 |  |
Other corporate |  | 3,250 |  |  |  |  | 634 |  |  |  |  | 10 |  |  |  |  | 3,874 |  |
Total yen-denominated |  | 38,772 |  |  |  |  | 9,220 |  |  |  |  | 55 |  |  |  |  | 47,937 |  |
Total securities held to maturity |  | $ | 38,772 |  |  |  |  | $ | 9,220 |  |  |  |  | $ | 55 |  |  |  |  | $ | 47,937 |  |
| December 31, 2015
(In millions) | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities available for sale, carried at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies |  | $ | 17,293 |  |  |  |  | $ | 1,862 |  |  |  |  | $ | 0 |  |  |  |  | $ | 19,155 |  |
Municipalities |  | 128 |  |  |  |  | 9 |  |  |  |  | 0 |  |  |  |  | 137 |  |
Mortgage- and asset-backed securities |  | 322 |  |  |  |  | 33 |  |  |  |  | 0 |  |  |  |  | 355 |  |
Public utilities |  | 1,400 |  |  |  |  | 210 |  |  |  |  | 10 |  |  |  |  | 1,600 |  |
Sovereign and supranational |  | 791 |  |  |  |  | 180 |  |  |  |  | 0 |  |  |  |  | 971 |  |
Banks/financial institutions |  | 2,321 |  |  |  |  | 325 |  |  |  |  | 105 |  |  |  |  | 2,541 |  |
Other corporate |  | 3,337 |  |  |  |  | 448 |  |  |  |  | 33 |  |  |  |  | 3,752 |  |
Total yen-denominated |  | 25,592 |  |  |  |  | 3,067 |  |  |  |  | 148 |  |  |  |  | 28,511 |  |
Dollar-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government and agencies |  | 110 |  |  |  |  | 11 |  |  |  |  | 0 |  |  |  |  | 121 |  |
Municipalities |  | 926 |  |  |  |  | 151 |  |  |  |  | 6 |  |  |  |  | 1,071 |  |
Mortgage- and asset-backed securities |  | 200 |  |  |  |  | 27 |  |  |  |  | 0 |  |  |  |  | 227 |  |
Public utilities |  | 5,464 |  |  |  |  | 636 |  |  |  |  | 221 |  |  |  |  | 5,879 |  |
Sovereign and supranational |  | 331 |  |  |  |  | 105 |  |  |  |  | 0 |  |  |  |  | 436 |  |
Banks/financial institutions |  | 2,865 |  |  |  |  | 634 |  |  |  |  | 21 |  |  |  |  | 3,478 |  |
Other corporate |  | 25,154 |  |  |  |  | 1,774 |  |  |  |  | 1,302 |  |  |  |  | 25,626 |  |
Total dollar-denominated |  | 35,050 |  |  |  |  | 3,338 |  |  |  |  | 1,550 |  |  |  |  | 36,838 |  |
Total fixed maturities |  | 60,642 |  |  |  |  | 6,405 |  |  |  |  | 1,698 |  |  |  |  | 65,349 |  |
Perpetual securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Banks/financial institutions |  | 1,581 |  |  |  |  | 143 |  |  |  |  | 93 |  |  |  |  | 1,631 |  |
Other corporate |  | 183 |  |  |  |  | 22 |  |  |  |  | 0 |  |  |  |  | 205 |  |
Dollar-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Banks/financial institutions |  | 77 |  |  |  |  | 35 |  |  |  |  | 1 |  |  |  |  | 111 |  |
Total perpetual securities |  | 1,841 |  |  |  |  | 200 |  |  |  |  | 94 |  |  |  |  | 1,947 |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 472 |  |  |  |  | 19 |  |  |  |  | 4 |  |  |  |  | 487 |  |
Dollar-denominated |  | 8 |  |  |  |  | 3 |  |  |  |  | 0 |  |  |  |  | 11 |  |
Total equity securities |  | 480 |  |  |  |  | 22 |  |  |  |  | 4 |  |  |  |  | 498 |  |
Total securities available for sale |  | $ | 62,963 |  |  |  |  | $ | 6,627 |  |  |  |  | $ | 1,796 |  |  |  |  | $ | 67,794 |  |
| December 31, 2015
(In millions) | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities held to maturity, carried at amortized cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies |  | $ | 20,004 |  |  |  |  | $ | 3,387 |  |  |  |  | $ | 0 |  |  |  |  | $ | 23,391 |  |
Municipalities |  | 341 |  |  |  |  | 74 |  |  |  |  | 0 |  |  |  |  | 415 |  |
Mortgage- and asset-backed securities |  | 36 |  |  |  |  | 2 |  |  |  |  | 0 |  |  |  |  | 38 |  |
Public utilities |  | 3,092 |  |  |  |  | 205 |  |  |  |  | 94 |  |  |  |  | 3,203 |  |
Sovereign and supranational |  | 2,555 |  |  |  |  | 182 |  |  |  |  | 26 |  |  |  |  | 2,711 |  |
Banks/financial institutions |  | 4,431 |  |  |  |  | 168 |  |  |  |  | 53 |  |  |  |  | 4,546 |  |
Other corporate |  | 3,000 |  |  |  |  | 260 |  |  |  |  | 44 |  |  |  |  | 3,216 |  |
Total yen-denominated |  | 33,459 |  |  |  |  | 4,278 |  |  |  |  | 217 |  |  |  |  | 37,520 |  |
Total securities held to maturity |  | $ | 33,459 |  |  |  |  | $ | 4,278 |  |  |  |  | $ | 217 |  |  |  |  | $ | 37,520 |  |
The methods of determining the fair values of our investments in fixed-maturity securities, perpetual securities and equity securities are described in Note 5. Beginning in 2015 and continuing into the first nine months of 2016, we increased our investment in yen-denominated publicly traded equity securities. During the first nine months of 2016, we also increased our investment in U.S. dollar-denominated publicly traded equity securities. These securities are classified as available for sale and carried on our balance sheet at fair value. During the first nine months of 2016 and 2015, respectively, we did not reclassify any investments from the held-to-maturity category to the available-for-sale category. Contractual and Economic Maturities The contractual maturities of our investments in fixed maturities at September 30, 2016, were as follows:
| Aflac Japan |  | Aflac U.S.
(In millions) | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 393 |  |  |  |  | $ | 403 |  |  |  |  | $ | 88 |  |  |  |  | $ | 91 |  |
Due after one year through five years |  | 3,808 |  |  |  |  | 3,882 |  |  |  |  | 686 |  |  |  |  | 754 |  |
Due after five years through 10 years |  | 12,340 |  |  |  |  | 12,616 |  |  |  |  | 2,644 |  |  |  |  | 2,900 |  |
Due after 10 years |  | 40,610 |  |  |  |  | 47,945 |  |  |  |  | 8,700 |  |  |  |  | 10,191 |  |
Mortgage- and asset-backed securities |  | 1,025 |  |  |  |  | 1,076 |  |  |  |  | 34 |  |  |  |  | 40 |  |
Total fixed maturities available for sale |  | $ | 58,176 |  |  |  |  | $ | 65,922 |  |  |  |  | $ | 12,152 |  |  |  |  | $ | 13,976 |  |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due after one year through five years |  | $ | 2,314 |  |  |  |  | $ | 2,454 |  |  |  |  | $ | 0 |  |  |  |  | $ | 0 |  |
Due after five years through 10 years |  | 1,825 |  |  |  |  | 2,030 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Due after 10 years |  | 34,596 |  |  |  |  | 43,414 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Mortgage- and asset-backed securities |  | 37 |  |  |  |  | 39 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Total fixed maturities held to maturity |  | $ | 38,772 |  |  |  |  | $ | 47,937 |  |  |  |  | $ | 0 |  |  |  |  | $ | 0 |  |
At September 30, 2016, the Parent Company and other business segments had portfolios of available-for-sale fixed-maturity securities totaling $601 million at amortized cost and $629 million at fair value, which are not included in the table above. Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay obligations with or without call or prepayment penalties. The majority of our perpetual securities are subordinated to other debt obligations of the issuer, but rank higher than the issuer's equity securities. Perpetual securities have characteristics of both debt and equity investments, along with unique features that create economic maturity dates for the securities. Although perpetual securities have no contractual maturity date, they have stated interest coupons that were fixed at their issuance and subsequently change to a floating short-term interest rate after some period of time. The instruments are generally callable by the issuer at the time of changing from a fixed coupon rate to a new variable rate of interest, which is determined by the combination of some market index plus a fixed amount of basis points. The net effect is to create an expected maturity date for the instrument. The economic maturities of our investments in perpetual securities, which were all reported as available for sale at September 30, 2016, were as follows:
| Aflac Japan |  | Aflac U.S.
(In millions) | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due in one year or less |  | $ | 154 |  |  |  |  | $ | 117 |  |  |  |  | $ | 0 |  |  |  |  | $ | 0 |  |
Due after one year through five years |  | 384 |  |  |  |  | 409 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Due after 10 years |  | 1,373 |  |  |  |  | 1,411 |  |  |  |  | 39 |  |  |  |  | 57 |  |
Total perpetual securities available for sale |  | $ | 1,911 |  |  |  |  | $ | 1,937 |  |  |  |  | $ | 39 |  |  |  |  | $ | 57 |  |
Investment Concentrations Our process for investing in credit-related investments begins with an independent approach to underwriting each issuer's fundamental credit quality. We evaluate independently those factors which we believe could influence an issuer's ability to make payments under the contractual terms of our instruments. This includes a thorough analysis of a variety of items including the issuer's country of domicile (including political, legal, and financial considerations); the industry in which the issuer competes (with an analysis of industry structure, end-market dynamics, and regulation); company specific issues (such as management, assets, earnings, cash generation, and capital needs); and contractual provisions of the instrument (such as financial covenants and position in the capital structure). We further evaluate the investment considering broad business and portfolio management objectives, including asset/liability needs, portfolio diversification, and expected income. Investment exposures that individually exceeded 10% of shareholders' equity as of September 30, 2016 and December 31, 2015 were as follows:
| September 30, 2016 |  | December 31, 2015
(In millions) | Credit Rating |  | Amortized Cost |  | Fair Value |  | Credit Rating |  | Amortized Cost |  | Fair Value
Japan National Government(1) | A |  | $45,808 |  | $57,547 |  | A |  | $36,859 |  | $42,025
(1)Japan Government Bonds (JGBs) or JGB-backed securities Realized Investment Gains and Losses Information regarding pretax realized gains and losses from investments is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30, |
(In millions) | 2016 |  | 2015 |  | 2016 |  | 2015 |
Realized investment gains (losses): |  |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |  |
Available for sale: |  |  |  |  |  |  |  |
Gross gains from sales | $ | 2 |  |  | $ | 20 |  | (1) | $ | 10 |  |  | $ | 124 |  |
Gross losses from sales | (20 | ) | (1) | (6 | ) |  | (36 | ) | (1) | (6 | ) |
Net gains (losses) from redemptions | (4 | ) | (1) | 12 |  | (1) | 74 |  | (1) | 38 |  |
Other-than-temporary impairment losses | (1 | ) | (1) | (136 | ) |  | (22 | ) | (1) | (142 | ) |
Total fixed maturities | (23 | ) |  | (110 | ) |  | 26 |  |  | 14 |  |
Perpetual securities: |  |  |  |  |  |  |  |
Available for sale: |  |  |  |  |  |  |  |
Net gains (losses) from redemptions | 0 |  |  | 0 |  |  | 40 |  |  | 30 |  |
Other-than-temporary impairment losses | 0 |  |  | 0 |  |  | (2 | ) |  | 0 |  |
Total perpetual securities | 0 |  |  | 0 |  |  | 38 |  |  | 30 |  |
Equity securities: |  |  |  |  |  |  |  |
Gross gains from sales | 5 |  |  | 0 |  |  | 10 |  |  | 0 |  |
Gross losses from sales | 0 |  |  | 0 |  |  | (11 | ) |  | 0 |  |
Other-than-temporary impairment losses | (21 | ) |  | (1 | ) |  | (45 | ) |  | (1 | ) |
Total equity securities | (16 | ) |  | (1 | ) |  | (46 | ) |  | (1 | ) |
Derivatives and other: |  |  |  |  |  |  |  |
Derivative gains (losses) | (107 | ) |  | (3 | ) |  | (278 | ) |  | (17 | ) |
Total derivatives and other | (107 | ) |  | (3 | ) |  | (278 | ) |  | (17 | ) |
Total realized investment gains (losses) | $ | (146 | ) |  | $ | (114 | ) |  | $ | (260 | ) |  | $ | 26 |  |
(1) Primarily driven by foreign exchange Other-than-temporary Impairment The majority of our fixed maturity and perpetual security investments are evaluated for other-than-temporary impairment using our debt impairment model. Our debt impairment model focuses on the ultimate collection of the cash flows from our investments and whether we have the intent to sell or if it is more likely than not we would be required to sell the security prior to recovery of its amortized cost. The fair values of our fixed maturity and perpetual security investments fluctuate based on changes in interest rates, foreign exchange, and credit spreads in the global financial markets. Fair values can also be heavily influenced by the values of the assets of the issuer and expected ultimate recovery values upon a default, bankruptcy or other financial restructuring. Credit spreads are most impacted by the general credit environment and global market liquidity. Interest rates are driven by numerous factors including, but not limited to, supply and demand, governmental monetary actions, expectations of inflation and economic growth. We believe that fluctuations in the fair values of our investment securities related to general changes in the level of credit spreads or interest rates have little bearing on underlying credit quality of the issuer, and whether our investment is ultimately recoverable. Generally, we consider such declines in fair values to be temporary even in situations where an investment remains in an unrealized loss position for an extended period of time. In the course of our review process, we may determine that it is unlikely that our fixed maturity or perpetual security investment will recover in value within an acceptable time frame. Factors which may influence this determination include the severity of the price decline, the length of time the price has been impaired, if the price decline was driven by issuer credit deterioration, and our view of the likelihood of the security defaulting or otherwise being subject to an unfavorable restructuring. In those cases where we believe the security will not recover in price within an acceptable period of time, we consider such a decline in the investment's fair value, to the extent it is below the investment's cost or amortized cost, to be an other-than-temporary impairment of the investment and reduce the book value of the investment to its fair value. The perpetual securities we hold were largely issued by banks that are integral to the financial markets of the sovereign country of the issuer. As a result of the issuer's position within the economy of the sovereign country, our perpetual securities may be subject to a higher risk of nationalization of their issuers in connection with capital injections from an issuer's sovereign government. We cannot be assured that such capital support will extend to all levels of an issuer's capital structure. In addition, certain governments or regulators may consider imposing interest and principal payment restrictions on issuers of hybrid securities to preserve cash and preserve the issuer's capital. Beyond the cash flow impact that additional deferrals would have on our portfolio, such deferrals could result in ratings downgrades of the affected securities, which in turn could result in a reduction of fair value of the securities and increase our regulatory capital requirements. We consider these factors in our credit review process. When determining our intention to sell a security prior to recovery of its fair value to amortized cost, we evaluate facts and circumstances such as, but not limited to, future cash flow needs, decisions to reposition our security portfolio, and risk profile of individual investment holdings. We perform ongoing analyses of our liquidity needs, which includes cash flow testing of our policy liabilities, debt maturities, projected dividend payments and other cash flow and liquidity needs. Our cash flow testing includes extensive duration analysis of our investment portfolio and policy liabilities. Based on our analyses, we have concluded that we have sufficient excess cash flows to meet our liquidity needs without selling any of our investments prior to their maturity. Our investments in perpetual securities that are rated below investment grade and equity securities are evaluated for other-than-temporary impairment under our equity impairment model. Our equity impairment model focuses on the severity of a security’s decline in fair value coupled with the length of time the fair value of the security has been below cost or amortized cost and the financial condition and near-term prospects of the issuer. For equity securities, we also verify our intent to hold the securities until they recover in value. The fair value of our investments in equity securities may decline for various reasons, such as general market conditions, which reflect prospects for the economy as a whole, foreign exchange rates or due to specific information pertaining to an industry or an individual company. For those equity securities evaluated for impairment under the equity impairment model that are in an unrealized loss position, if we believe the security will not recover in price within an acceptable period of time, or we do not have the intent to hold until recovery, we will record an other-than-temporary impairment of the investment and reduce the cost of the investment to its fair value on that date. The following table details our pretax other-than-temporary impairment losses by investment category that resulted from our impairment evaluation process.
| Three Months Ended September 30, |  | Nine Months Ended September 30, |
(In millions) | 2016 |  | 2015 |  | 2016 |  | 2015 |
Perpetual securities | $ | 0 |  |  | $ | 0 |  |  | $ | 2 |  |  | $ | 0 |  |
Corporate bonds | 1 |  |  | 5 |  |  | 22 |  |  | 7 |  |
Bank/financial institution bonds | 0 |  |  | 131 |  |  | 0 |  |  | 135 |  |
Equity securities | 21 |  |  | 1 |  |  | 45 |  |  | 1 |  |
Total other-than-temporary impairment losses realized (1) | $ | 22 |  |  | $ | 137 |  |  | $ | 69 |  |  | $ | 143 |  |
(1) Includes $22 and $6 for the three-month periods and $69 and $12 for the nine-month periods ended September 30, 2016 and 2015, respectively, from change in intent to sell securities or change in intent to hold securities until recovery; and $131 for the three- and nine-month periods ended September 30, 2015, for credit-related impairments Unrealized Investment Gains and Losses Effect on Shareholders’ Equity The net effect on shareholders’ equity of unrealized gains and losses from investment securities was as follows:
(In millions) | September 30, 2016 |  | December 31, 2015
Unrealized gains (losses) on securities available for sale |  | $ | 9,651 |  |  |  |  | $ | 4,831 |  |
Deferred income taxes |  | (3,531 | ) |  |  |  | (1,845 | ) |
Shareholders’ equity, unrealized gains (losses) on investment securities |  | $ | 6,120 |  |  |  |  | $ | 2,986 |  |
Gross Unrealized Loss Aging The following tables show the fair values and gross unrealized losses of our available-for-sale and held-to-maturity investments that were in an unrealized loss position, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.
| September 30, 2016
| Total |  | Less than 12 months |  | 12 months or longer
(In millions) | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Fixed Maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | $ | 689 |  |  |  |  | $ | 23 |  |  |  |  | $ | 689 |  |  |  |  | $ | 23 |  |  |  |  | $ | 0 |  |  |  |  | $ | 0 |  |
Municipalities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 50 |  |  |  |  | 3 |  |  |  |  | 0 |  |  |  |  | 0 |  |  |  |  | 50 |  |  |  |  | 3 |  |
Yen-denominated |  | 62 |  |  |  |  | 2 |  |  |  |  | 62 |  |  |  |  | 2 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Mortgage- and asset- backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 413 |  |  |  |  | 3 |  |  |  |  | 413 |  |  |  |  | 3 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Public utilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 1,199 |  |  |  |  | 54 |  |  |  |  | 448 |  |  |  |  | 13 |  |  |  |  | 751 |  |  |  |  | 41 |  |
Yen-denominated |  | 648 |  |  |  |  | 14 |  |  |  |  | 313 |  |  |  |  | 3 |  |  |  |  | 335 |  |  |  |  | 11 |  |
Sovereign and supranational: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 242 |  |  |  |  | 6 |  |  |  |  | 0 |  |  |  |  | 0 |  |  |  |  | 242 |  |  |  |  | 6 |  |
Banks/financial institutions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 150 |  |  |  |  | 11 |  |  |  |  | 85 |  |  |  |  | 4 |  |  |  |  | 65 |  |  |  |  | 7 |  |
Yen-denominated |  | 1,415 |  |  |  |  | 124 |  |  |  |  | 324 |  |  |  |  | 4 |  |  |  |  | 1,091 |  |  |  |  | 120 |  |
Other corporate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 7,752 |  |  |  |  | 679 |  |  |  |  | 4,058 |  |  |  |  | 236 |  |  |  |  | 3,694 |  |  |  |  | 443 |  |
Yen-denominated |  | 897 |  |  |  |  | 53 |  |  |  |  | 364 |  |  |  |  | 13 |  |  |  |  | 533 |  |  |  |  | 40 |  |
Total fixed maturities |  | 13,517 |  |  |  |  | 972 |  |  |  |  | 6,756 |  |  |  |  | 301 |  |  |  |  | 6,761 |  |  |  |  | 671 |  |
Perpetual securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 630 |  |  |  |  | 126 |  |  |  |  | 97 |  |  |  |  | 1 |  |  |  |  | 533 |  |  |  |  | 125 |  |
Total perpetual securities |  | 630 |  |  |  |  | 126 |  |  |  |  | 97 |  |  |  |  | 1 |  |  |  |  | 533 |  |  |  |  | 125 |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 183 |  |  |  |  | 9 |  |  |  |  | 183 |  |  |  |  | 9 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Yen-denominated |  | 382 |  |  |  |  | 42 |  |  |  |  | 382 |  |  |  |  | 42 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Total equity securities |  | 565 |  |  |  |  | 51 |  |  |  |  | 565 |  |  |  |  | 51 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Total |  | $ | 14,712 |  |  |  |  | $ | 1,149 |  |  |  |  | $ | 7,418 |  |  |  |  | $ | 353 |  |  |  |  | $ | 7,294 |  |  |  |  | $ | 796 |  |
| December 31, 2015
| Total |  | Less than 12 months |  | 12 months or longer
(In millions) | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Fixed Maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipalities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | $ | 80 |  |  |  |  | $ | 6 |  |  |  |  | $ | 80 |  |  |  |  | $ | 6 |  |  |  |  | $ | 0 |  |  |  |  | $ | 0 |  |
Public utilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 2,127 |  |  |  |  | 221 |  |  |  |  | 1,689 |  |  |  |  | 132 |  |  |  |  | 438 |  |  |  |  | 89 |  |
Yen-denominated |  | 1,487 |  |  |  |  | 104 |  |  |  |  | 1,062 |  |  |  |  | 73 |  |  |  |  | 425 |  |  |  |  | 31 |  |
Sovereign and supranational: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 580 |  |  |  |  | 26 |  |  |  |  | 385 |  |  |  |  | 13 |  |  |  |  | 195 |  |  |  |  | 13 |  |
Banks/financial institutions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 366 |  |  |  |  | 21 |  |  |  |  | 348 |  |  |  |  | 11 |  |  |  |  | 18 |  |  |  |  | 10 |  |
Yen-denominated |  | 2,350 |  |  |  |  | 158 |  |  |  |  | 1,147 |  |  |  |  | 14 |  |  |  |  | 1,203 |  |  |  |  | 144 |  |
Other corporate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 13,430 |  |  |  |  | 1,302 |  |  |  |  | 11,068 |  |  |  |  | 770 |  |  |  |  | 2,362 |  |  |  |  | 532 |  |
Yen-denominated |  | 1,151 |  |  |  |  | 77 |  |  |  |  | 343 |  |  |  |  | 5 |  |  |  |  | 808 |  |  |  |  | 72 |  |
Total fixed maturities |  | 21,571 |  |  |  |  | 1,915 |  |  |  |  | 16,122 |  |  |  |  | 1,024 |  |  |  |  | 5,449 |  |  |  |  | 891 |  |
Perpetual securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dollar-denominated |  | 6 |  |  |  |  | 1 |  |  |  |  | 0 |  |  |  |  | 0 |  |  |  |  | 6 |  |  |  |  | 1 |  |
Yen-denominated |  | 645 |  |  |  |  | 93 |  |  |  |  | 216 |  |  |  |  | 12 |  |  |  |  | 429 |  |  |  |  | 81 |  |
Total perpetual securities |  | 651 |  |  |  |  | 94 |  |  |  |  | 216 |  |  |  |  | 12 |  |  |  |  | 435 |  |  |  |  | 82 |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yen-denominated |  | 191 |  |  |  |  | 4 |  |  |  |  | 191 |  |  |  |  | 4 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Total equity securities |  | 191 |  |  |  |  | 4 |  |  |  |  | 191 |  |  |  |  | 4 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Total |  | $ | 22,413 |  |  |  |  | $ | 2,013 |  |  |  |  | $ | 16,529 |  |  |  |  | $ | 1,040 |  |  |  |  | $ | 5,884 |  |  |  |  | $ | 973 |  |
Analysis of Securities in Unrealized Loss Positions The unrealized losses on our fixed maturity or perpetual securities investments have been primarily related to general market changes in interest rates, foreign exchange rates, and/or the levels of credit spreads rather than specific concerns with the issuer's ability to pay interest and repay principal. The unrealized losses on our investments in equity securities are primarily related to foreign exchange rates, general market conditions which reflect prospects for the economy as a whole, or specific information pertaining to an industry or an individual company. For any significant declines in fair value of our fixed income or perpetual securities, we perform a more focused review of the related issuers' credit profile. For corporate issuers, we evaluate their assets, business profile including industry dynamics and competitive positioning, financial statements and other available financial data. For non-corporate issuers, we analyze all sources of credit support, including issuer-specific factors. We utilize information available in the public domain and, for certain private placement issuers, from consultations with the issuers directly. We also consider ratings from Nationally Recognized Statistical Rating Organizations (NRSROs), as well as the specific characteristics of the security we own including seniority in the issuer's capital structure, covenant predictions, or other relevant features. From these reviews, we evaluate the issuers' continued ability to service our investment through payment of interest and principal. For any significant declines in fair value of our equity securities, we review the severity of the security’s decline in fair value coupled with the length of time the fair value of the security has been below cost. We also perform a more focused review of the financial condition and near-term prospects of the issuer as well as general market conditions reflecting the prospects for the economy as a whole, and determine whether we have the intent to hold the securities until they recover in value. The following table provides more information on our unrealized loss position on fixed maturities, perpetual securities and equity securities.
|  | September 30, 2016 |  |  | December 31, 2015 |
(In millions) | Investments in an Unrealized Loss Position | Gross Unrealized Losses | Gross Unrealized Losses that are Investment Grade | Investments in an Unrealized Loss Position | Gross Unrealized Losses | Gross Unrealized Losses that are Investment Grade
Fixed Maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Japan government and agencies |  | 4 | % |  |  | 2 | % |  |  | 100 | % |  |  | 0 | % |  |  | 0 | % |  |  | 0 | % |
Municipalities |  | 1 |  |  |  | 1 |  |  |  | 100 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |
Mortgage- and asset- backed securities |  | 3 |  |  |  | 0 |  |  |  | 100 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |
Public utilities |  | 12 |  |  |  | 6 |  |  |  | 88 |  |  |  | 16 |  |  |  | 16 |  |  |  | 93 |  |
Sovereign and supranational |  | 2 |  |  |  | 1 |  |  |  | 100 |  |  |  | 3 |  |  |  | 1 |  |  |  | 100 |  |
Banks/financial institutions |  | 11 |  |  |  | 12 |  |  |  | 38 |  |  |  | 12 |  |  |  | 9 |  |  |  | 59 |  |
Other corporate |  | 59 |  |  |  | 63 |  |  |  | 47 |  |  |  | 66 |  |  |  | 69 |  |  |  | 86 |  |
Total fixed maturities |  | 92 |  |  |  | 85 |  |  |  |  |  |  | 97 |  |  |  | 95 |  |  |  |  |
Perpetual securities |  | 4 |  |  |  | 11 |  |  |  | 100 |  |  |  | 3 |  |  |  | 5 |  |  |  | 100 |  |
Equity securities |  | 4 |  |  |  | 4 |  |  |  |  |  |  | 0 |  |  |  | 0 |  |  |  |  |
Total |  | 100 | % |  |  | 100 | % |  |  |  |  |  | 100 | % |  |  | 100 | % |  |  |  |
The decrease in the percentage of gross unrealized losses that are investment grade for the banks and financial institutions sector for the period ending September 30, 2016 was due to the redemption of an investment-grade security that contributed to a large portion of investment-grade unrealized losses at December 31, 2015. The decrease in the percentage of gross unrealized losses that are investment grade for the other corporate sector for the period ending September 30, 2016 was due to the increase in unrealized losses of dollar-denominated below-investment-grade securities mainly attributable to the strengthening of the yen/dollar exchange rate. The increase in the percentage of investments in an unrealized loss position for the Japan government and agencies and mortgage- and asset-backed securities is attributable to the increase in Japan interest rates in the third quarter of 2016. Assuming no credit-related factors develop, unrealized gains and losses on fixed maturities and perpetual securities are expected to diminish as investments near maturity. Based on our credit analysis, we believe that the issuers of our fixed maturity and perpetual security investments in the sectors shown in the table above have the ability to service their obligations to us. Variable Interest Entities (VIEs) As a condition of our involvement or investment in a VIE, we enter into certain protective rights and covenants that preclude changes in the structure of the VIE that would alter the creditworthiness of our investment or our beneficial interest in the VIE. For those VIEs in which we are not the arranger, our involvement is passive in nature. We are not, nor have we been, required to purchase any securities issued in the future by these VIEs. Our ownership interest in VIEs is limited to holding the obligations issued by them. We have no direct or contingent obligations to fund the limited activities of these VIEs, nor do we have any direct or indirect financial guarantees related to the limited activities of these VIEs. We have not provided any assistance or any other type of financing support to any of the VIEs we invest in, nor do we have any intention to do so in the future. For those VIEs in which we hold debt obligations, the weighted-average lives of our notes are very similar to the underlying collateral held by these VIEs where applicable. We also utilize unit trust structures in our Aflac Japan segment to invest in various asset classes. As the sole investor of these VIEs, we are required to consolidate these entities under U.S. GAAP. Our risk of loss related to our interests in any of our VIEs is limited to the carrying value of the related investments held in the VIE. VIEs - Consolidated The following table presents the cost or amortized cost, fair value and balance sheet caption in which the assets and liabilities of consolidated VIEs are reported. Investments in Consolidated Variable Interest Entities
| September 30, 2016 |  | December 31, 2015
(In millions) | Cost or Amortized Cost |  | Fair Value |  | Cost or Amortized Cost |  | Fair Value
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities, available for sale |  | $ | 4,870 |  |  |  |  | $ | 5,494 |  |  |  |  | $ | 3,739 |  |  |  |  | $ | 4,554 |  |
Perpetual securities, available for sale |  | 273 |  |  |  |  | 219 |  |  |  |  | 255 |  |  |  |  | 228 |  |
Equity securities |  | 1,036 |  |  |  |  | 1,014 |  |  |  |  | 363 |  |  |  |  | 363 |  |
Other investments |  | 489 |  |  |  |  | 494 |  |  |  |  | 0 |  |  |  |  | 0 |  |
Other assets |  | 168 |  |  |  |  | 168 |  |  |  |  | 102 |  |  |  |  | 102 |  |
Total assets of consolidated VIEs |  | $ | 6,836 |  |  |  |  | $ | 7,389 |  |  |  |  | $ | 4,459 |  |  |  |  | $ | 5,247 |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities |  | $ | 124 |  |  |  |  | $ | 124 |  |  |  |  | $ | 293 |  |  |  |  | $ | 293 |  |
Total liabilities of consolidated VIEs |  | $ | 124 |  |  |  |  | $ | 124 |  |  |  |  | $ | 293 |  |  |  |  | $ | 293 |  |
We are substantively the only investor in the consolidated VIEs listed in the table above. As the sole investor in these VIEs, we have the power to direct the activities of a variable interest entity that most significantly impact the entity's economic performance and are therefore considered to be the primary beneficiary of the VIEs that we consolidate. We also participate in substantially all of the variability created by these VIEs. The activities of these VIEs are limited to holding debt, equity, and perpetual securities and foreign currency, and/or credit default swaps (CDS), as appropriate, and utilizing the cash flows from these securities to service our investment. Neither we nor any of our creditors are able to obtain the underlying collateral of the VIEs unless there is an event of default or other specified event. For those VIEs that contain a swap, we are not a direct counterparty to the swap contracts and have no control over them. Our loss exposure to these VIEs is limited to our original investment. Our consolidated VIEs do not rely on outside or ongoing sources of funding to support their activities beyond the underlying collateral and swap contracts, if applicable. With the exception of our investment in senior secured bank loans (bank loans), commercial mortgage loans, and certain equity securities through unit trust structures, the underlying collateral assets and funding of our consolidated VIEs are generally static in nature and the underlying collateral and the reference corporate entities covered by any CDS contracts were all investment grade at the time of issuance. We are exposed to credit losses within our consolidated collateralized debt obligation (CDO) that could result in principal losses to our investment. However, we have mitigated the risk of credit loss through the structure of the VIE, which contractually requires the subordinated tranches within the VIE to absorb the majority of the expected losses from the underlying credit default swaps. We currently own only senior mezzanine CDO tranches. Based on our statistical analysis models and the current subordination levels in our CDO, the VIE can sustain a reasonable number of defaults in the underlying reference entities in the CDS with no loss to our investment. Investments in Unit Trust Structures We invest through unit trust structures in yen-denominated public equity securities, U.S. dollar-denominated public equity securities, bank loans, commercial mortgage loans, and middle market loans in which we are the only investor, requiring us to consolidate these trusts under U.S. GAAP. The yen-denominated and dollar-denominated equity securities are classified as available-for-sale in the financial statements. As of September 30, 2016, the amortized cost and fair value of these equity securities was $1.0 billion, compared with amortized cost and fair value of $363 million as of December 31, 2015. The bank loans are classified as available-for-sale fixed-maturity securities in the financial statements. As of September 30, 2016, the amortized cost and fair value of our bank loan investments was $2.1 billion and $1.9 billion, respectively, compared with an amortized cost and fair value of $1.4 billion as of December 31, 2015. The commercial mortgage loans, all of which were purchased in the first nine months of 2016, are classified as held for investment and reflected in other investments on the consolidated balance sheets. As of September 30, 2016, the amortized cost of these loans, net of loan loss reserves, was $481 million. The middle market loans, which were purchased during the third quarter of 2016, are classified as held for investment and reflected in other investments on the consolidated balance sheets. As of September 30, 2016, the amortized cost of these loans, net of loan loss reserves, was $8 million. VIEs-Not Consolidated The table below reflects the amortized cost, fair value and balance sheet caption in which our investment in VIEs not consolidated are reported. Investments in Variable Interest Entities Not Consolidated
| September 30, 2016 |  | December 31, 2015
(In millions) | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities, available for sale |  | $ | 5,241 |  |  |  |  | $ | 5,814 |  |  |  |  | $ | 4,731 |  |  |  |  | $ | 5,093 |  |
Perpetual securities, available for sale |  | 297 |  |  |  |  | 312 |  |  |  |  | 249 |  |  |  |  | 253 |  |
Fixed maturities, held to maturity |  | 2,953 |  |  |  |  | 3,489 |  |  |  |  | 2,477 |  |  |  |  | 2,636 |  |
Total investments in VIEs not consolidated |  | $ | 8,491 |  |  |  |  | $ | 9,615 |  |  |  |  | $ | 7,457 |  |  |  |  | $ | 7,982 |  |
Prior-year amounts have been adjusted for the adoption of accounting guidance on January 1, 2016 related to consolidations. The VIEs that we are not required to consolidate are investments that are in the form of debt obligations from the VIEs that are irrevocably and unconditionally guaranteed by their corporate parents or sponsors. These VIEs are the primary financing vehicles used by their corporate sponsors to raise financing in the capital markets. The variable interests created by these VIEs are principally or solely a result of the debt instruments issued by them. We do not have the power to direct the activities that most significantly impact the entity's economic performance, nor do we have the obligation to absorb losses of the entity or the right to receive benefits from the entity. As such, we are not the primary beneficiary of these VIEs and are therefore not required to consolidate them. These VIE investments comprise securities from 146 separate issuers with an average credit rating of BBB. Loans and Loan Receivables We classify our loans and loan receivables as held-for-investment and include them in the other investments line on the consolidated balance sheets. We carry them on the balance sheet at amortized cost less an estimated allowance for loan losses. Our loan allowance for losses is established using both specific and general allowances. The specific allowance is used on an individual loan basis for those impaired loans where we expect to incur a loss. The general allowance is used for loans grouped by similar risk characteristics where a loan-specific or market-specific risk has not been identified, but for which we anticipate to incur a loss. Middle Market Loans As of September 30, 2016, and December 31, 2015, our investment in middle market loan receivables, net of loan loss reserves and inclusive of those loans held in unit trust structures as discussed above, was $240 million and $118 million, respectively, which included an unfunded amount of $23 million and $53 million, respectively, that was reflected in other liabilities on the consolidated balance sheets. As of September 30, 2016 and December 31, 2015, we had no loans that were past due in regards to principal and/or interest payments. Additionally, we held no loans that were on nonaccrual status or considered impaired as of September 30, 2016 and December 31, 2015. Our middle market loan allowance for losses was immaterial as of September 30, 2016 and December 31, 2015. We had no troubled debt restructurings during the nine months ended September 30, 2016 and 2015. As of September 30, 2016, we had commitments of $409 million to fund potential future loan originations related to this investment program, inclusive of loans held in unit trust structures. These commitments are contingent upon the availability of middle market loans that meet our underwriting criteria. Commercial Mortgage Loans In 2016, we began funding investments in commercial mortgage loans. As of September 30, 2016, the amortized cost of these investments, net of loan loss reserves and inclusive of those loans held in unit trust structures as discussed above, was $555 million. We had no loans that were past due in regards to principal and/or interest payments, and we held no loans that were on nonaccrual status or considered impaired as of September 30, 2016. Our commercial mortgage loan allowance for losses was immaterial as of September 30, 2016. We had no troubled debt restructurings during the nine months ended September 30, 2016. As of September 30, 2016, we had $185 million in outstanding commitments to fund commercial mortgage loans, inclusive of loans held in unit trust structures. These commitments are contingent on the final underwriting and due diligence to be performed. Securities Lending and Pledged Securities We lend fixed-maturity securities to financial institutions in short-term security-lending transactions. These short-term security-lending arrangements increase investment income with minimal risk. Our security lending policy requires that the fair value of the securities and/or unrestricted cash received as collateral be 102% or more of the fair value of the loaned securities. These securities continue to be carried as investment assets on our balance sheet during the terms of the loans and are not reported as sales. We receive cash or other securities as collateral for such loans. For loans involving unrestricted cash or securities as collateral, the collateral is reported as an asset with a corresponding liability for the return of the collateral. Details of our securities lending activities were as follows:
Securities Lending Transactions Accounted for as Secured Borrowings
September 30, 2016
Remaining Contractual Maturity of the Agreements
(In millions) | Overnight and Continuous(1) |  | Up to 30 days |  |  | Total
Securities lending transactions: |  |  |  |  |  |
Japan government and agencies | $ | 0 |  |  | $ | 598 |  |  |  | $ | 598 |
Public utilities | 93 |  |  | 0 |  |  |  | 93 |
Banks/financial institutions | 29 |  |  | 0 |  |  |  | 29 |
Other corporate | 333 |  |  | 0 |  |  |  | 333 |
Total borrowings | $ | 455 |  |  | $ | 598 |  |  |  | $ | 1,053 |
Gross amount of recognized liabilities for securities lending transactions |  | $ | 1,053 |
Amounts related to agreements not included in offsetting disclosure in Note 4 |  | $ | 0 |
(1) These securities are pledged as collateral under our U.S. securities lending program and can be called at our discretion; therefore, they are classified as Overnight and Continuous.
Securities Lending Transactions Accounted for as Secured Borrowings
December 31, 2015
Remaining Contractual Maturity of the Agreements
(In millions) | Overnight and Continuous(1) |  | Up to 30 days |  |  | Total
Securities lending transactions: |  |  |  |  |  |
Japan government and agencies | $ | 0 |  |  | $ | 499 |  |  |  | $ | 499 |
Public utilities | 108 |  |  | 0 |  |  |  | 108 |
Banks/financial institutions | 13 |  |  | 0 |  |  |  | 13 |
Other corporate | 321 |  |  | 0 |  |  |  | 321 |
Total borrowings | $ | 442 |  |  | $ | 499 |  |  |  | $ | 941 |
Gross amount of recognized liabilities for securities lending transactions |  | $ | 941 |
Amounts related to agreements not included in offsetting disclosure in Note 4 |  | $ | 0 |
(1) These securities are pledged as collateral under our U.S. securities lending program and can be called at our discretion; therefore, they are classified as Overnight and Continuous. We did not have any repurchase agreements or repurchase-to-maturity transactions outstanding as of September 30, 2016 and December 31, 2015, respectively. Certain fixed-maturity securities can be pledged as collateral as part of derivative transactions, or pledged to support state deposit requirements or certain investment programs. For additional information regarding pledged securities related to derivative transactions, see Note 4.

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