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INVESTMENTS (Tables) | 9 Months Ended
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Sep. 30, 2016
Available-for-sale Securities |
| 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 |  |
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 |  |
Held-to-maturity Securities |
| 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 |  |
| 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 |  |
Investments Classified by Contractual Maturity Date | 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 |  |
Economic Maturities of Investments in Perpetual Securities | 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 Exposures Exceeding Ten Percent Shareholders Equity | 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
Gain (Loss) on Investments | 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 |  |
Other Than Temporary Impairment Losses on Investment Securities | 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
Net Effect on Shareholders' Equity of Unrealized Gains and Losses from Investment Securities | 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 |  |
Investments 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 |  |
Investments in Unrealized Loss Position | 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 | % |  |  |  |
Securities Lending Transactions Accounted for as Secured Borrowings | 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.
Variable Interest Entity, Consolidated |
Investments in Variable Interest Entities | 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 |  |
Variable Interest Entity, Not Consolidated |
Investments in Variable Interest Entities | 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.

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- Definition Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6228884-111685 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Variable Interest Entity -URI http://asc.fasb.org/extlink&oid=6528138 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5710-111685 + Details
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- Definition Tabular disclosure of the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64858031&loc=SL34722452-111729 + Details
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