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SCHEDULE I - SUMMARY OF INVESTMENTS, OTHER THAN INVESTMENTS IN RELATED PARTIES (DETAILS) $ in Thousands | Dec. 31, 2016 USD ($)
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Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | $ 13,048,072
Amount shown on the Balance Sheet | 13,459,507
US Government and Agency [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 1,681,425
Fair Value | 1,656,069
Amount shown on the Balance Sheet | 1,656,069
Non-US Government [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 613,282
Fair Value | 565,834
Amount shown on the Balance Sheet | 565,834
Corporate Debt [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 4,633,834
Fair Value | 4,600,743
Amount shown on the Balance Sheet | 4,600,743
Agency RMBS [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 2,487,837
Fair Value | 2,465,135
Amount shown on the Balance Sheet | 2,465,135
CMBS [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 664,368
Fair Value | 666,237
Amount shown on the Balance Sheet | 666,237
Non-Agency RMBS [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 57,316
Fair Value | 56,921
Amount shown on the Balance Sheet | 56,921
ABS [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 1,221,813
Fair Value | 1,222,214
Amount shown on the Balance Sheet | 1,222,214
Municipals [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 163,441
Fair Value | 163,961
Amount shown on the Balance Sheet | 163,961
Fixed Maturities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 11,523,316
Fair Value | 11,397,114
Amount shown on the Balance Sheet | 11,397,114
Mortgage loans [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | 349,969
Amount shown on the Balance Sheet | 349,969
Short-term Investments [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | 127,461
Amount shown on the Balance Sheet | 127,461
Equity Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | 638,744
Amount shown on the Balance Sheet | 638,744
Other Investments [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | 534,784
Amount shown on the Balance Sheet | 830,219
Equity Method Investments [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Fair Value | 0
Amount shown on the Balance Sheet | $ 116,000

X
- Definition This element represents the carrying (reported) amount of the entity's investments as of the balance sheet date. This amount may represent the individual investment's or group of similar investments' original cost, fair value, or such other amount at which the investment is shown in the entity's balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the original cost of the entity's investments including investments in equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the reported amount of the entity's investments measured at fair value. Fair value is the price that would be received to sell an investment in an orderly transaction between market participants at the balance sheet [measurement] date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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