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SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION | 12 Months Ended
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Dec. 31, 2017
Supplementary Insurance Information [Abstract] |
SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION | AXIS CAPITAL HOLDINGS LIMITED SUPPLEMENTARY INSURANCE INFORMATION
|  | At and year ended December 31, 2017
(in thousands) |  | Deferred Acquisition Costs |  | Reserve for Losses and Loss Expenses |  | Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income(1) |  | Losses And Loss Expenses |  | Amortization of Deferred Acquisition Costs |  | Other Operating Expenses(2) |  | Net Premiums Written
Insurance |  | $ | 152,070 |  |  | $ | 7,164,364 |  |  | $ | 2,225,647 |  |  | $ | 2,106,363 |  |  | $ | — |  |  | $ | 1,661,032 |  |  | $ | 332,749 |  |  | $ | 344,012 |  |  | $ | 2,087,734 |
Reinsurance |  | 321,991 |  |  | 5,833,189 |  |  | 1,415,752 |  |  | 2,042,397 |  |  | — |  |  | 1,626,740 |  |  | 490,842 |  |  | 105,471 |  |  | 1,939,409 |
Corporate |  | — |  |  | — |  |  | — |  |  | — |  |  | 400,805 |  |  | — |  |  | — |  |  | 129,945 |  |  | — |
Total |  | $ | 474,061 |  |  | $ | 12,997,553 |  |  | $ | 3,641,399 |  |  | $ | 4,148,760 |  |  | $ | 400,805 |  |  | $ | 3,287,772 |  |  | $ | 823,591 |  |  | $ | 579,428 |  |  | $ | 4,027,143 |
|  | At and year ended December 31, 2016
(in thousands) |  | Deferred Acquisition Costs |  | Reserve for Losses and Loss Expenses |  | Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income(1) |  | Losses And Loss Expenses |  | Amortization of Deferred Acquisition Costs |  | Other Operating Expenses(2) |  | Net Premiums Written
Insurance |  | $ | 128,880 |  |  | $ | 5,345,655 |  |  | $ | 1,574,164 |  |  | $ | 1,777,321 |  |  | $ | — |  |  | $ | 1,141,933 |  |  | $ | 251,120 |  |  | $ | 346,857 |  |  | $ | 1,807,125 |
Reinsurance |  | 309,756 |  |  | 4,352,172 |  |  | 1,395,334 |  |  | 1,928,304 |  |  | — |  |  | 1,062,264 |  |  | 495,756 |  |  | 135,844 |  |  | 1,945,849 |
Corporate |  | — |  |  | — |  |  | — |  |  | — |  |  | 353,335 |  |  | — |  |  | — |  |  | 120,016 |  |  | — |
Total |  | $ | 438,636 |  |  | $ | 9,697,827 |  |  | $ | 2,969,498 |  |  | $ | 3,705,625 |  |  | $ | 353,335 |  |  | $ | 2,204,197 |  |  | $ | 746,876 |  |  | $ | 602,717 |  |  | $ | 3,752,974 |
|  | At and year ended December 31, 2015
(in thousands) |  | Deferred Acquisition Costs |  | Reserve for Losses and Loss Expenses |  | Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income(1) |  | Losses And Loss Expenses |  | Amortization of Deferred Acquisition Costs |  | Other Operating Expenses(2) |  | Net Premiums Written
Insurance |  | $ | 119,186 |  |  | $ | 5,291,218 |  |  | $ | 1,494,068 |  |  | $ | 1,798,191 |  |  | $ | — |  |  | $ | 1,154,928 |  |  | $ | 261,208 |  |  | $ | 341,658 |  |  | $ | 1,759,359 |
Reinsurance |  | 352,596 |  |  | 4,355,067 |  |  | 1,266,821 |  |  | 1,888,226 |  |  | — |  |  | 1,021,271 |  |  | 456,904 |  |  | 145,253 |  |  | 1,915,307 |
Corporate |  | — |  |  | — |  |  | — |  |  | — |  |  | 305,336 |  |  | — |  |  | — |  |  | 109,910 |  |  | — |
Total |  | $ | 471,782 |  |  | $ | 9,646,285 |  |  | $ | 2,760,889 |  |  | $ | 3,686,417 |  |  | $ | 305,336 |  |  | $ | 2,176,199 |  |  | $ | 718,112 |  |  | $ | 596,821 |  |  | $ | 3,674,666 |
(1) | We evaluate the underwriting results of each of our reportable segments separately from the performance of our investment portfolio. As such, we believe it is appropriate to exclude net investment income from our underwriting profitability measure.
(2) | Amounts related to our reportable segments reflect underwriting-related general and administrative expenses, which includes those general and administrative expenses that are incremental and/or directly attributable to our individual underwriting operations. Corporate expenses include holding company costs necessary to support our worldwide insurance and reinsurance operations and costs associated with operating as a publicly-traded company. As these costs are not incremental and/or directly attributable to our individual underwriting operations, we exclude them from underwriting-related general and administrative expenses. The reconciliation of underwriting-related general and administrative expenses to general and administrative expenses, the most comparable GAAP measure, is presented in Item 7 'Management’s Discussion and Analysis of Financial Condition and Results of Operations – Executive summary, Results of Operations'.

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- Definition The entire disclosure for required supplementary insurance information giving segment detail in support of various balance sheet and income statement captions. The balance sheet information generally is presented as of the date of each audited balance sheet filed, and the income statement information generally is presented for each period for which an audited income statement is required to be filed. Supplementary insurance information table includes segment name; deferred policy acquisition costs; future policy benefits, losses, claims and loss expenses; unearned premiums; other policy claims and benefits payable; premium revenue; net investment income; benefits, claims, losses and settlement expenses; amortization of deferred policy acquisition costs; other operating expenses; and premiums written. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.7-05.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6879921&loc=d3e569147-122900 + Details
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