XML 104 R12.htm IDEA: XBRL DOCUMENT
v2.4.1.9

INVESTMENTS | 12 Months Ended
--- | ---
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract] |
INVESTMENTS [Text Block] |
a) | Fixed Maturities and Equities
The amortized cost or cost and fair values of our fixed maturities and equities were as follows:
|  | Amortized Cost or Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Non-credit OTTI in AOCI(5) |
| At December 31, 2014 |  |  |  |  |  |  |  |  |  |
| Fixed maturities |  |  |  |  |  |  |  |  |  |
| U.S. government and agency | $ | 1,645,068 |  |  | $ | 3,337 |  |  | $ | (28,328 | ) |  | $ | 1,620,077 |  |  | $ | — |  |
| Non-U.S. government | 1,080,601 |  |  | 7,383 |  |  | (54,441 | ) |  | 1,033,543 |  |  | — |  |
| Corporate debt | 4,386,432 |  |  | 40,972 |  |  | (66,280 | ) |  | 4,361,124 |  |  | — |  |
| Agency RMBS(1) | 2,241,581 |  |  | 40,762 |  |  | (4,235 | ) |  | 2,278,108 |  |  | — |  |
| CMBS(2) | 1,085,618 |  |  | 13,289 |  |  | (2,019 | ) |  | 1,096,888 |  |  | — |  |
| Non-Agency RMBS | 71,236 |  |  | 2,765 |  |  | (915 | ) |  | 73,086 |  |  | (889 | ) |
| ABS(3) | 1,475,026 |  |  | 2,748 |  |  | (16,188 | ) |  | 1,461,586 |  |  | — |  |
| Municipals(4) | 200,411 |  |  | 5,282 |  |  | (832 | ) |  | 204,861 |  |  | — |  |
| Total fixed maturities | $ | 12,185,973 |  |  | $ | 116,538 |  |  | $ | (173,238 | ) |  | $ | 12,129,273 |  |  | $ | (889 | ) |
| Equity securities |  |  |  |  |  |  |  |  |  |
| Common stocks | — |  |  | — |  |  | — |  |  | — |  |  |  |
| Exchange-traded funds | 416,063 |  |  | 43,583 |  |  | (4,756 | ) |  | 454,890 |  |  |  |
| Non-U.S. bond mutual funds | 115,585 |  |  | — |  |  | (2,768 | ) |  | 112,817 |  |  |  |
| Total equity securities | $ | 531,648 |  |  | $ | 43,583 |  |  | $ | (7,524 | ) |  | $ | 567,707 |  |  |  |
| At December 31, 2013 |  |  |  |  |  |  |  |  |  |
| Fixed maturities |  |  |  |  |  |  |  |  |  |
| U.S. government and agency | $ | 1,421,245 |  |  | $ | 1,405 |  |  | $ | (33,952 | ) |  | $ | 1,388,698 |  |  | $ | — |  |
| Non-U.S. government | 1,208,384 |  |  | 17,990 |  |  | (49,992 | ) |  | 1,176,382 |  |  | — |  |
| Corporate debt | 3,533,585 |  |  | 84,881 |  |  | (10,228 | ) |  | 3,608,238 |  |  | — |  |
| Agency RMBS(1) | 2,485,139 |  |  | 21,979 |  |  | (58,291 | ) |  | 2,448,827 |  |  | — |  |
| CMBS(2) | 790,095 |  |  | 11,285 |  |  | (3,966 | ) |  | 797,414 |  |  | — |  |
| Non-Agency RMBS | 65,590 |  |  | 2,375 |  |  | (398 | ) |  | 67,567 |  |  | (868 | ) |
| ABS(3) | 955,274 |  |  | 6,871 |  |  | (8,694 | ) |  | 953,451 |  |  | — |  |
| Municipals(4) | 1,527,834 |  |  | 32,432 |  |  | (14,516 | ) |  | 1,545,750 |  |  | — |  |
| Total fixed maturities | $ | 11,987,146 |  |  | $ | 179,218 |  |  | $ | (180,037 | ) |  | $ | 11,986,327 |  |  | $ | (868 | ) |
| Equity securities |  |  |  |  |  |  |  |  |  |
| Common stocks | 345,759 |  |  | 98,742 |  |  | (6,183 | ) |  | 438,318 |  |  |  |
| Exchange-traded funds | 106,762 |  |  | 32,085 |  |  | — |  |  | 138,847 |  |  |  |
| Non-U.S. bond mutual funds | 113,698 |  |  | 11,124 |  |  | — |  |  | 124,822 |  |  |  |
| Total equity securities | $ | 566,219 |  |  | $ | 141,951 |  |  | $ | (6,183 | ) |  | $ | 701,987 |  |  |  |
(1) | Residential mortgage-backed securities (RMBS) originated by U.S. agencies.
(2) | Commercial mortgage-backed securities (CMBS).
(3) | Asset-backed securities (ABS) include debt tranched securities collateralized primarily by auto loans, student loans, credit cards, and other asset types. This asset class also includes collateralized loan obligations (CLOs) and collateralized debt obligations (CDOs).
(4) | Municipals include bonds issued by states, municipalities and political subdivisions.
(5) | Represents the non-credit component of the other-than-temporary impairment (OTTI) losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the impairment measurement date.
In the normal course of investing activities, we actively manage allocations to non-controlling tranches of structured securities (variable interests) issued by VIEs. These structured securities include RMBS, CMBS and ABS and are included in the above table. Additionally, within our other investments portfolio, we also invest in limited partnerships (hedge funds) and CLO equity tranched securities, which are all variable interests issued by VIEs (see Note 5(b)). For these variable interests, we do not have the power to direct the activities that are most significant to the economic performance of the VIEs and accordingly we are not the primary beneficiary for any of these VIEs. Our maximum exposure to loss on these interests is limited to the amount of our investment. We have not provided financial or other support with respect to these structured securities other than our original investment. Contractual Maturities The contractual maturities of fixed maturities are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
|  | Amortized Cost |  | Fair Value |  | % of Total Fair Value |
| At December 31, 2014 |  |  |  |  |  |
| Maturity |  |  |  |  |  |
| Due in one year or less | $ | 424,077 |  |  | $ | 423,265 |  |  | 3.5 | % |
| Due after one year through five years | 4,925,780 |  |  | 4,892,411 |  |  | 40.3 | % |
| Due after five years through ten years | 1,755,248 |  |  | 1,695,641 |  |  | 14.0 | % |
| Due after ten years | 207,407 |  |  | 208,288 |  |  | 1.7 | % |
|  | 7,312,512 |  |  | 7,219,605 |  |  | 59.5 | % |
| Agency RMBS | 2,241,581 |  |  | 2,278,108 |  |  | 18.8 | % |
| CMBS | 1,085,618 |  |  | 1,096,888 |  |  | 9.0 | % |
| Non-Agency RMBS | 71,236 |  |  | 73,086 |  |  | 0.6 | % |
| ABS | 1,475,026 |  |  | 1,461,586 |  |  | 12.1 | % |
| Total | $ | 12,185,973 |  |  | $ | 12,129,273 |  |  | 100.0 | % |
| At December 31, 2013 |  |  |  |  |  |
| Maturity |  |  |  |  |  |
| Due in one year or less | $ | 710,079 |  |  | $ | 717,052 |  |  | 5.9 | % |
| Due after one year through five years | 5,030,728 |  |  | 5,116,060 |  |  | 42.7 | % |
| Due after five years through ten years | 1,852,877 |  |  | 1,791,835 |  |  | 14.9 | % |
| Due after ten years | 97,364 |  |  | 94,121 |  |  | 0.8 | % |
|  | 7,691,048 |  |  | 7,719,068 |  |  | 64.3 | % |
| Agency RMBS | 2,485,139 |  |  | 2,448,827 |  |  | 20.4 | % |
| CMBS | 790,095 |  |  | 797,414 |  |  | 6.7 | % |
| Non-Agency RMBS | 65,590 |  |  | 67,567 |  |  | 0.6 | % |
| ABS | 955,274 |  |  | 953,451 |  |  | 8.0 | % |
| Total | $ | 11,987,146 |  |  | $ | 11,986,327 |  |  | 100.0 | % |
Gross Unrealized Losses The following table summarizes fixed maturities and equities in an unrealized loss position and the aggregate fair value and gross unrealized loss by length of time the security has continuously been in an unrealized loss position:
|  | 12 months or greater |  | Less than 12 months |  | Total |
|  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |
| At December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |
| Fixed maturities |  |  |  |  |  |  |  |  |  |  |  |
| U.S. government and agency | $ | 388,551 |  |  | $ | (24,319 | ) |  | $ | 786,850 |  |  | $ | (4,009 | ) |  | $ | 1,175,401 |  |  | $ | (28,328 | ) |
| Non-U.S. government | 143,602 |  |  | (29,171 | ) |  | 435,670 |  |  | (25,270 | ) |  | 579,272 |  |  | (54,441 | ) |
| Corporate debt | 26,708 |  |  | (2,221 | ) |  | 2,199,672 |  |  | (64,059 | ) |  | 2,226,380 |  |  | (66,280 | ) |
| Agency RMBS | 259,914 |  |  | (3,084 | ) |  | 333,288 |  |  | (1,151 | ) |  | 593,202 |  |  | (4,235 | ) |
| CMBS | 68,624 |  |  | (925 | ) |  | 256,225 |  |  | (1,094 | ) |  | 324,849 |  |  | (2,019 | ) |
| Non-Agency RMBS | 6,689 |  |  | (613 | ) |  | 13,442 |  |  | (302 | ) |  | 20,131 |  |  | (915 | ) |
| ABS | 425,663 |  |  | (10,325 | ) |  | 750,679 |  |  | (5,863 | ) |  | 1,176,342 |  |  | (16,188 | ) |
| Municipals | 34,462 |  |  | (644 | ) |  | 25,284 |  |  | (188 | ) |  | 59,746 |  |  | (832 | ) |
| Total fixed maturities | $ | 1,354,213 |  |  | $ | (71,302 | ) |  | $ | 4,801,110 |  |  | $ | (101,936 | ) |  | $ | 6,155,323 |  |  | $ | (173,238 | ) |
| Equity securities |  |  |  |  |  |  |  |  |  |  |  |
| Common stocks | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |
| Exchange-traded funds | — |  |  | — |  |  | 91,275 |  |  | (4,756 | ) |  | 91,275 |  |  | (4,756 | ) |
| Non-U.S. bond mutual funds | — |  |  | — |  |  | 112,817 |  |  | (2,768 | ) |  | 112,817 |  |  | (2,768 | ) |
| Total equity securities | $ | — |  |  | $ | — |  |  | $ | 204,092 |  |  | $ | (7,524 | ) |  | $ | 204,092 |  |  | $ | (7,524 | ) |
| At December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
| Fixed maturities |  |  |  |  |  |  |  |  |  |  |  |
| U.S. government and agency | $ | — |  |  | $ | — |  |  | $ | 982,307 |  |  | $ | (33,952 | ) |  | $ | 982,307 |  |  | $ | (33,952 | ) |
| Non-U.S. government | 35,577 |  |  | (3,430 | ) |  | 420,622 |  |  | (46,562 | ) |  | 456,199 |  |  | (49,992 | ) |
| Corporate debt | 27,696 |  |  | (802 | ) |  | 606,592 |  |  | (9,426 | ) |  | 634,288 |  |  | (10,228 | ) |
| Agency RMBS | 144,468 |  |  | (5,247 | ) |  | 1,478,527 |  |  | (53,044 | ) |  | 1,622,995 |  |  | (58,291 | ) |
| CMBS | 13,319 |  |  | (116 | ) |  | 298,863 |  |  | (3,850 | ) |  | 312,182 |  |  | (3,966 | ) |
| Non-Agency RMBS | 4,287 |  |  | (315 | ) |  | 5,319 |  |  | (83 | ) |  | 9,606 |  |  | (398 | ) |
| ABS | 37,765 |  |  | (2,941 | ) |  | 553,803 |  |  | (5,753 | ) |  | 591,568 |  |  | (8,694 | ) |
| Municipals | 8,408 |  |  | (615 | ) |  | 543,474 |  |  | (13,901 | ) |  | 551,882 |  |  | (14,516 | ) |
| Total fixed maturities | $ | 271,520 |  |  | $ | (13,466 | ) |  | $ | 4,889,507 |  |  | $ | (166,571 | ) |  | $ | 5,161,027 |  |  | $ | (180,037 | ) |
| Equity securities |  |  |  |  |  |  |  |  |  |  |  |
| Common stocks | $ | 3,499 |  |  | $ | (398 | ) |  | $ | 48,828 |  |  | $ | (5,785 | ) |  | $ | 52,327 |  |  | $ | (6,183 | ) |
| Exchange-traded funds | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
| Non-U.S. bond mutual funds | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
| Total equity securities | $ | 3,499 |  |  | $ | (398 | ) |  | $ | 48,828 |  |  | $ | (5,785 | ) |  | $ | 52,327 |  |  | $ | (6,183 | ) |
Fixed Maturities At December 31, 2014, 1,388 fixed maturities (2013: 1,127) were in an unrealized loss position of $173 million (2013: $180 million) of which $36 million (2013: $2 million) was related to securities below investment grade or not rated. At December 31, 2014, 223 securities (2013: 99) had been in a continuous unrealized loss position for 12 months or greater and had a fair value of $1,354 million (2013: $272 million). Following our credit impairment review, we concluded that these securities as well as the remaining securities in an unrealized loss position in the above table were temporarily depressed at December 31, 2014, and were expected to recover in value as the securities approach maturity. Further, at December 31, 2014, we did not intend to sell these securities in an unrealized loss position and it is more likely than not that we will not be required to sell these securities before the anticipated recovery of their amortized costs. Equity Securities At December 31, 2014, 9 securities (2013: 63) were in an unrealized loss position of $8 million (2013: $6 million). At December 31, 2014, there were no securities that had been in a continuous unrealized loss position for 12 months or greater (2013: 9 securities with a fair value of $3 million). Based on our impairment review process and our ability and intent to hold these securities for a reasonable period of time sufficient for a full recovery, we concluded that the above equities in an unrealized loss position were temporarily impaired at December 31, 2014 and 2013.
b) | Other Investments
The following tables provide a breakdown of our investments in hedge funds, direct lending funds and CLO Equities, together with additional information relating to the liquidity of each category:
|  | Fair Value |  | Redemption Frequency (if currently eligible) |  | Redemption Notice Period |
| At December 31, 2014 |  |  |  |  |  |  |  |
| Long/short equity funds | $ | 298,907 |  |  | 31 | % |  | Quarterly, Semi-annually |  | 30-60 days |
| Multi-strategy funds | 324,020 |  |  | 34 | % |  | Quarterly, Semi-annually |  | 60-95 days |
| Event-driven funds | 185,899 |  |  | 19 | % |  | Quarterly, Annually |  | 45-60 days |
| Leveraged bank loan funds | 9,713 |  |  | 1 | % |  | Quarterly |  | 65 days |
| Direct lending funds | 54,438 |  |  | 6 | % |  | n/a |  | n/a |
| CLO - Equities | 92,488 |  |  | 9 | % |  | n/a |  | n/a |
| Total other investments | $ | 965,465 |  |  | 100 | % |  |  |  |  |
| At December 31, 2013 |  |  |  |  |  |  |  |
| Long/short equity funds | $ | 425,444 |  |  | 41 | % |  | Monthly, Quarterly, Semi-annually |  | 30-60 days |
| Multi-strategy funds | 285,155 |  |  | 27 | % |  | Quarterly, Semi-annually |  | 60-95 days |
| Event-driven funds | 190,458 |  |  | 18 | % |  | Quarterly, Annually |  | 45-60 days |
| Leveraged bank loan funds | 48,753 |  |  | 5 | % |  | Quarterly |  | 65 days |
| Direct lending funds | 22,134 |  |  | 2 | % |  | n/a |  | n/a |
| CLO - Equities | 73,866 |  |  | 7 | % |  | n/a |  | n/a |
| Total other investments | $ | 1,045,810 |  |  | 100 | % |  |  |  |  |
n/a – not applicable The investment strategies for the above funds are as follows:
• | Long/short equity funds: Seek to achieve attractive returns primarily by executing an equity trading strategy involving both long and short investments in publicly-traded equities.
• | Multi-strategy funds: Seek to achieve above-market returns by pursuing multiple investment strategies to diversify risks and reduce volatility. This category includes funds of hedge funds which invest in a large pool of hedge funds across a diversified range of hedge fund strategies.
• | Event-driven funds: Seek to achieve attractive returns by exploiting situations where announced or anticipated events create opportunities.
• | Leveraged bank loan funds: Seek to achieve attractive returns by investing primarily in bank loan collateral that has limited interest rate risk exposure.
• | Direct lending funds: Seek to achieve attractive risk-adjusted returns, including current income generation, by investing in funds which provide financing directly to borrowers.
Two common redemption restrictions which may impact our ability to redeem our hedge funds are gates and lockups. A gate is a suspension of redemptions which may be implemented by the general partner or investment manager of the fund in order to defer, in whole or in part, the redemption request in the event the aggregate amount of redemption requests exceeds a predetermined percentage of the fund’s net assets which may otherwise hinder the general partner or investment manager’s ability to liquidate holdings in an orderly fashion in order to generate the cash necessary to fund extraordinarily large redemption payouts. A lockup period is the initial amount of time an investor is contractually required to hold the security before having the ability to redeem. During 2014 and 2013, neither of these restrictions impacted our redemption requests. At December 31, 2014, $87 million (2013: $99 million), representing 11% (2013: 10%) of our total hedge funds, relate to holdings where we are still within the lockup period. The expiry of these lockup periods range from March, 2015 to March, 2016. At December 31, 2014, $6 million (2013: $11 million) was invested in hedge funds that are not accepting redemption requests. Of this amount, substantially all relates to a leveraged bank loan fund in a period of planned principal distributions. Based on market conditions and payments made to date, management's current expectation is that the distribution process will be completed in 2015. At December 31, 2014, we have $88 million (2013: $88 million) of unfunded commitments within our other investments portfolio relating to our future investments in direct lending funds. Once the full amount of committed capital has been called by the General Partner of each of these funds, the assets will not be fully returned until the completion of the fund's investment term. These funds have investment terms ranging from 5-10 years and the General Partners of certain funds have the option to extend the term by up to three years. During 2013, we made a $60 million commitment as a limited partner in a multi-strategy hedge fund. Once the full amount of committed capital has been called by the General Partner, the assets will not be fully returned until the completion of the fund's investment term which ends in December, 2018. The General Partner then has the option to extend the term by up to three years. At December 31, 2014, $35 million of our commitment remains unfunded and the current fair value of the funds called to date are included in the multi-strategy funds line of the table above.
c) | Net Investment Income
Net investment income was derived from the following sources:
| Year ended December 31, | 2014 |  | 2013 |  | 2012 |
| Fixed maturities | $ | 296,663 |  |  | $ | 293,609 |  |  | $ | 304,400 |  |
| Other investments | 57,621 |  |  | 128,814 |  |  | 87,660 |  |
| Equity securities | 11,832 |  |  | 10,897 |  |  | 11,904 |  |
| Cash and cash equivalents | 11,536 |  |  | 6,337 |  |  | 4,528 |  |
| Short-term investments | 725 |  |  | 1,181 |  |  | 596 |  |
| Gross investment income | 378,377 |  |  | 440,838 |  |  | 409,088 |  |
| Investment expenses | (35,611 | ) |  | (31,526 | ) |  | (28,131 | ) |
| Net investment income | $ | 342,766 |  |  | $ | 409,312 |  |  | $ | 380,957 |  |
d) | Net Realized Investment Gains
The following table provides an analysis of net realized investment gains:
| Year ended December 31, | 2014 |  | 2013 |  | 2012 |
| Gross realized gains |  |  |  |  |  |
| Fixed maturities and short-term investments(1) | $ | 126,023 |  |  | $ | 120,932 |  |  | $ | 242,082 |  |
| Equities | 149,783 |  |  | 54,564 |  |  | 36,411 |  |
| Gross realized gains | 275,806 |  |  | 175,496 |  |  | 278,493 |  |
| Gross realized losses |  |  |  |  |  |
| Fixed maturities and short-term investments | (86,943 | ) |  | (87,894 | ) |  | (101,844 | ) |
| Equities | (15,925 | ) |  | (10,407 | ) |  | (23,530 | ) |
| Gross realized losses | (102,868 | ) |  | (98,301 | ) |  | (125,374 | ) |
| Net OTTI recognized in earnings | (31,227 | ) |  | (9,362 | ) |  | (24,234 | ) |
| Change in fair value of investment derivatives(2) | (9,603 | ) |  | 7,731 |  |  | (9,170 | ) |
| Fair value hedges(2) | — |  |  | — |  |  | 7,754 |  |
| Net realized investment gains | $ | 132,108 |  |  | $ | 75,564 |  |  | $ | 127,469 |  |
(1) | Includes $37 million of gains in 2012 relating to previously unrealized foreign exchange currency amounts on the hedged fixed maturity portfolios. The hedged portfolio was sold and all associated foreign exchange contracts were fully settled during 2012 so there is no impact on the 2013 or 2014 figures.
(2) | Refer to Note 7 – Derivative Instruments
The following table summarizes the OTTI recognized in earnings by asset class:
| Year ended December 31, | 2014 |  | 2013 |  | 2012 |
| Fixed maturities: |  |  |  |  |  |
| Non-U.S. government | $ | 17,291 |  |  | $ | 120 |  |  | $ | 3,281 |  |
| Corporate debt | 8,107 |  |  | 5,802 |  |  | 1,821 |  |
| Non-Agency RMBS | 7 |  |  | 57 |  |  | 2,016 |  |
| ABS | 61 |  |  | 129 |  |  | 795 |  |
| Municipals | 418 |  |  | 639 |  |  | — |  |
|  | 25,884 |  |  | 6,747 |  |  | 7,913 |  |
| Equity Securities |  |  |  |  |  |
| Common stocks | 741 |  |  | 2,092 |  |  | 7,318 |  |
| Exchange-traded funds | 4,602 |  |  | 523 |  |  | 9,003 |  |
|  | 5,343 |  |  | 2,615 |  |  | 16,321 |  |
| Total OTTI recognized in earnings | $ | 31,227 |  |  | $ | 9,362 |  |  | $ | 24,234 |  |
Fixed Maturities The following table provides a roll forward of the credit losses (“credit loss table”), before income taxes, for which a portion of the OTTI was recognized in AOCI:
| Year ended December 31, | 2014 |  | 2013 |
| Balance at beginning of period | $ | 1,594 |  |  | $ | 1,809 |  |
| Credit impairments recognized on securities not previously impaired | — |  |  | — |  |
| Additional credit impairments recognized on securities previously impaired | — |  |  | — |  |
| Change in timing of future cash flows on securities previously impaired | — |  |  | — |  |
| Intent to sell of securities previously impaired | — |  |  | — |  |
| Securities sold/redeemed/matured | (63 | ) |  | (215 | ) |
| Balance at end of period | $ | 1,531 |  |  | $ | 1,594 |  |
Credit losses are calculated based on the difference between the amortized cost of the security and the net present value of its projected future cash flows discounted at the effective interest rate implicit in the debt security prior to the impairment. The following provides a summary of the credit loss activities by asset class for the above table as well as the significant inputs and the methodology used to estimate these credit losses. U.S. Government, U.S. Agency and U.S. Agency RMBS: Unrealized losses on securities issued or backed (either explicitly or implicitly) by the U.S. government are generally not analyzed for OTTI. We have concluded that the possibility of any credit losses on these securities is highly unlikely due to the explicit U.S. government guarantee on certain securities (e.g. GNMA issuances) and, on others, the implicit guarantee that has been validated by past actions (e.g. U.S. government bailout of FNMA and FHLMC during the 2008 credit crisis). Although not generally analyzed for credit losses, the securities are still evaluated for intention to sell at a loss. Non-U.S. Government: Non-U.S. government obligations are evaluated for credit loss primarily through qualitative assessments of the likelihood of credit loss using information such as duration and severity of unrealized losses, as well as credit ratings and price volatility. At December 31, 2014, our holdings in sovereign debt, including $119 million (2013: $161 million) relating to the eurozone countries, were substantially all investment-grade securities. The gross unrealized losses of $54 million at December 31, 2014 were mainly due to pricing and foreign exchange losses on emerging market debt. Based on our analysis, we do not anticipate any credit losses on our non-U.S. government fixed maturities at December 31, 2014. In 2014, the OTTI charges on Non-U.S. government fixed maturities mainly related to unrealized foreign exchange losses on certain securities where forecasted recovery was uncertain. Corporate Debt: To estimate credit losses for corporate debt securities, our projected cash flows are primarily driven by our assumptions regarding the probability of default and the severity associated with those defaults. Our default and loss severity rates are based on credit rating, credit analysis, industry analyst reports and forecasts, Moody’s historical default data and any other data relevant to the recoverability of the security. In 2014, the OTTI charges on corporate debt securities were mainly related to our intent to sell, as well as unrealized foreign exchange losses on certain securities where forecasted recovery was uncertain. CMBS: Our investments in CMBS are diversified and highly rated, with a weighted average estimated subordination percentage of 30% at December 31, 2014 (2013: 30%). Based on discounted cash flows at December 31, 2014, the current level of subordination is sufficient to cover the estimated loan losses on the underlying collateral of the CMBS. Non-agency RMBS: For non-agency RMBS, our projected cash flows incorporated underlying data from widely accepted third-party data sources along with certain internal assumptions and judgments regarding the future performance of the security. These assumptions included the following: default, delinquency, loss severity and prepayment rates. The assumptions used to calculate the credit losses in 2014 have not changed significantly since December 31, 2013. At December 31, 2014, the fair value of our non-agency RMBS was $73 million (2013: $68 million), consisting primarily of $49 million (2013: $41 million) of Prime and $17 million (2013: $19 million) of Alt-A MBS. We have concluded there are no credit losses anticipated for any of our non-agency RMBS at December 31, 2014, other than those already recorded. ABS: Our investments in ABS at December 31, 2014 consist mainly of CLO debt tranched securities (“CLO Debt”) purchased primarily as new issues during 2012-2014. Of these new issues all had credit ratings of AA- or better. We utilize a scenario-based approach to reviewing our CLO Debt portfolio based on the current asset market price. We also review subordination levels of our securities to determine their ability to absorb credit losses of underlying collateral. If losses are forecast to be below the subordination level for the tranche held by us, the security is determined not to be impaired. We have concluded there are no credit losses anticipated for any of our CLO Debt at December 31, 2014. Equity Securities The OTTI losses on common stocks in 2014 and 2013 are primarily due to the severity and duration of their unrealized loss positions, for which we concluded the forecast recovery period was uncertain. The recognition of such losses does not necessarily indicate that sales will occur or that sales are imminent or planned. At December 31, 2014, the fair value of our equities was $568 million (2013: $702 million), which included $8 million (2013: $6 million) of gross unrealized losses.
e) | Restricted Investments
In order to support our obligations in regulatory jurisdictions where we operate as a non-admitted carrier, we provide collateral in the form of assets held in trust and, to a lesser extent, letters of credit. Refer to Note 10(b) for further information on our collateral requirements upon issuance of certain letters of credit. The fair value of our restricted investments primarily relates to these items, as noted in the table below. Our restricted investments primarily consist of high-quality fixed maturity and short-term investment securities.
| At December 31, |  | 2014 |  | 2013 |
| Collateral in Trust for inter-company agreements |  | $ | 2,792,461 |  |  | $ | 2,261,081 |  |
| Collateral for secured letter of credit facility |  | 468,923 |  |  | 777,828 |  |
| Collateral in Trust for third party agreements (1) |  | 567,060 |  |  | 276,839 |  |
| Securities on deposit with regulatory authorities |  | 58,476 |  |  | 58,327 |  |
| Total restricted investments |  | $ | 3,886,920 |  |  | $ | 3,374,075 |  |
(1) | Includes $245 million of fixed income securities deposited directly with Lloyd's to support the underwriting capacity of the Company's Lloyd's Syndicate, AXIS Syndicate 1686.
f) | Reverse Repurchase Agreements
At December 31, 2014, we held $110 million (2013: $34 million) of reverse repurchase agreements. These loans are fully collateralized, are generally outstanding for a short period of time and are presented on a gross basis as part of cash and cash equivalents on our consolidated balance sheet. The required collateral for these loans is either cash or U.S. Treasuries at a minimum rate of 102% of the loan principal. Upon maturity, we receive principal and interest income.

X
- Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration