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INVESTMENTS (DETAILS 2) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Schedule Of Available For Sale Securities [Line Items] |  |
Due in one year or less (amortized cost) | $ 496,073 | $ 710,079
Due after one year through five years (amortized cost) | 5,399,655 | 5,030,728
Due after five years through ten years (amortized cost) | 1,907,336 | 1,852,877
Due after ten years (amortized cost) | 235,045 | 97,364
Total fixed maturities with a single maturity date (amortized cost) | 8,038,109 | 7,691,048
Total (amortized cost) | 12,428,133 | 11,987,146
Due in one year or less (fair value) | 502,045 | 717,052
Due after one year through five years (fair value) | 5,503,744 | 5,116,060
Due after five years through ten years (fair value) | 1,913,017 | 1,791,835
Due after ten years (fair value) | 242,947 | 94,121
Total fixed maturities with a single maturity date (fair value) | 8,161,753 | 7,719,068
Fair Value (fixed maturities) | 12,598,897 | 11,986,327
Due in one year or less (% of total fair value) | 4.00% | 5.90%
Due after one year through five years (% of total fair value) | 43.70% | 42.70%
Due after five years through ten years (% of total fair value) | 15.20% | 14.90%
Due after ten years (% of total fair value) | 1.90% | 0.80%
Fixed maturities with a single maturity date (% of total fair value) | 64.80% | 64.30%
Total | 100.00% | 100.00%
Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | 2,076,932 | 2,485,139
Total (amortized cost) | 2,076,932 | 2,485,139
Fixed maturities without a single maturity date (fair value) | 2,105,579 | 2,448,827
Fair Value (fixed maturities) | 2,105,579 | 2,448,827
Fixed maturities without a single maturity date (% of total fair value) | 16.70% | 20.40%
CMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | 923,294 | 790,095
Total (amortized cost) | 923,294 | 790,095
Fixed maturities without a single maturity date (fair value) | 939,694 | 797,414
Fair Value (fixed maturities) | 939,694 | 797,414
Fixed maturities without a single maturity date (% of total fair value) | 7.50% | 6.70%
Non-Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | 80,243 | 65,590
Total (amortized cost) | 80,243 | 65,590
Fixed maturities without a single maturity date (fair value) | 84,946 | 67,567
Fair Value (fixed maturities) | 84,946 | 67,567
Fixed maturities without a single maturity date (% of total fair value) | 0.70% | 0.60%
ABS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | 1,309,555 | 955,274
Total (amortized cost) | 1,309,555 | 955,274
Fixed maturities without a single maturity date (fair value) | 1,306,925 | 953,451
Fair Value (fixed maturities) | $ 1,306,925 | $ 953,451
Fixed maturities without a single maturity date (% of total fair value) | 10.30% | 8.00%

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