BASIS OF PRESENTATION AND ACCOUNTING POLICIES (POLICIES)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These interim consolidated financial statements include the accounts of AXIS Capital Holdings Limited (“AXIS Capital”) and its subsidiaries (herein referred to as “we,” “us,” “our,” or the “Company”). The consolidated balance sheet at September 30, 2016 and the consolidated statements of operations, comprehensive income, shareholders' equity and cash flows for the periods ended September 30, 2016 and 2015 have not been audited. The balance sheet at December 31, 2015 is derived from our audited financial statements. These financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial information and with the Securities and Exchange Commission's (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of our financial position and results of operations for the periods presented. The results of operations for any interim period are not necessarily indicative of the results for a full year. All inter-company accounts and transactions have been eliminated. The following information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015. Tabular dollar and share amounts are in thousands, except per share amounts. All amounts are reported in U.S. dollars. To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity. Significant Accounting Policies There were no notable changes in our significant accounting policies subsequent to our Annual Report on Form 10-K for the year ended December 31, 2015, with the exception of the addition of accounting policies for equity method investments and retroactive accounting noted below. Equity Method Investments Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.Changes in the carrying value of such investments are recorded in net income as interest in income (loss) of equity method investments. Retroactive Reinsurance Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.
Reclassification	To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity.
Equity Method Investments	Equity Method Investments Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.
Retroactive Reinsurance	Retroactive Reinsurance Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.
New Accounting Standards Adopted in 2016	New Accounting Standards Adopted in 2016 Share-Based Compensation Effective January 1, 2016, the Company adopted the Accounting Standards Update ("ASU") 2014-12, "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period" issued by the Financial Accounting Standards Board (the "FASB"). This guidance requires that compensation costs be recognized in the period in which it becomes probable that the performance target will be achieved and to represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. This guidance was issued to clarify treatment where there was a divergence in accounting practice and its adoption did not impact our results of operations, financial condition or liquidity. Debt Issuance Costs Effective January 1, 2016, the Company adopted ASU 2015-03, "Simplifying the Presentation of Debt Issuance Costs" issued by the FASB. This guidance requires the debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. This guidance was issued to simplify the presentation of debt issuance costs and to resolve conflicting guidance. This guidance did not impact our results of operations, financial condition or liquidity. Investments Measured Using The Net Asset Value Per Share ("NAV") Practical Expedient Effective January 1, 2016, the Company adopted ASU 2015-07, "Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or its Equivalent)" issued by the FASB. This guidance eliminated the requirement to categorize investments measured using the net asset value ("NAV") practical expedient in the fair value hierarchy table. As this new guidance related solely to disclosures, the adoption did not impact our results of operations, financial condition or liquidity. The updated disclosures have been provided in Note 4 'Fair Value Measurements'.
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted Leases In February 2016, the FASB issued guidance that provides a new comprehensive model for lease accounting. The guidance will require most leases to be recognized on the balance sheet by recording a right-of-use asset and a corresponding lease liability. This guidance is effective for reporting periods beginning after December 15, 2018, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity. Transition To Equity Method Of Accounting In March 2016, the FASB issued new guidance eliminating the requirement that an investor retrospectively apply equity method accounting when an existing investment qualifies for equity method accounting. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The guidance will be adopted on a prospective basis. The adoption of this guidance is not expected to materially impact our results of operations, financial condition or liquidity. Share-Based Compensation Accounting In March 2016, the FASB issued new guidance that will change the accounting for certain aspects of share-based compensation payments to employees. The guidance will require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The guidance will also allow employers to increase the amounts withheld to cover income taxes on share-based compensation awards without requiring liability classification. Additionally, companies will be required to elect whether they will account for award forfeitures by recognizing forfeitures only as they occur or by estimating the number of awards expected to be forfeited. This guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity. Credit Losses In June 2016, the FASB issued a new credit loss standard that changes the impairment model for most financial assets and certain other instruments. The guidance will replace the current "incurred loss" approach with a more forward looking "expected loss" model for instruments measured at amortized cost and will require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity. Cash Flows In August 2016, the FASB issued new guidance to clarify how certain cash receipts and cash payments should be classified on the statement of cash flows. This guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years with early adoption permitted. The adoption of this guidance is not expected to impact our results of operations, financial condition or liquidity.

Disclosure of accounting policy for investments in financial assets, including marketable securities (debt and equity securities with readily determinable fair values), investments accounted for under the equity method and cost method, securities borrowed and loaned, and repurchase and resale agreements. For marketable securities, the disclosure may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. Also, for all investments, an entity may describe its policy for assessing, recognizing and measuring impairment of the investment.