Variable Interest Entities	9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES Upsilon RFO Effective January 1, 2013, the Company formed and launched Upsilon RFO, a managed joint venture, and a Bermuda domiciled special purpose insurer, to provide additional capacity to the worldwide aggregate and per-occurrence retrocessional property catastrophe excess of loss market. The shareholders (other than the Class A shareholder) participate in substantially all of the profits or losses of Upsilon RFO while their shares remain outstanding. The shareholders (other than the Class A shareholder) indemnify Upsilon RFO against losses relating to insurance risk and therefore these shares have been accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance. Upsilon RFO is considered a VIE as it has insufficient equity capital to finance its activities without additional financial support. The Company is the primary beneficiary of Upsilon RFO as it has the power over the activities that most significantly impact the economic performance of Upsilon RFO and has the obligation to absorb expected losses and the right to receive expected benefits that could be significant to Upsilon RFO, in accordance with the accounting guidance. As a result, the Company consolidates Upsilon RFO and all significant inter-company transactions have been eliminated. Other than its equity investment in Upsilon RFO, the Company has not provided financial or other support to Upsilon RFO that it was not contractually required to provide. 2015 During 2015, Upsilon RFO returned capital to all of the investors who participated in risks incepting during 2014, including the Company. The total amount of capital returned was $420.2 million, including $132.3 million to the Company. In conjunction with risks incepting during 2015, $153.7 million of Upsilon RFO non-voting preference shares were issued to unaffiliated third-party investors through their investment in Upsilon Fund. Additionally, $42.5 million of the non-voting preference shares were issued to the Company, representing a 21.7% participation in the risks assumed by Upsilon RFO incepting during 2015. 2016 During the nine months ended September 30, 2016, Upsilon RFO returned $242.5 million of capital to its investors, including $59.8 million to the Company. In addition, during the nine months ended September 30, 2016, $166.6 million of Upsilon RFO non-voting preference shares were issued to existing investors therein, including $55.2 million to the Company. At September 30, 2016, the Company’s participation in the risks assumed by Upsilon RFO was 28.9%. At September 30, 2016, the Company’s consolidated balance sheet included total assets and total liabilities of Upsilon RFO of $215.4 million and $215.4 million, respectively (December 31, 2015 - $250.6 million and $250.5 million, respectively). Mona Lisa Re Ltd. (“Mona Lisa Re”) On March 14, 2013, Mona Lisa Re was licensed as a Bermuda domiciled special purpose insurer to provide reinsurance capacity to subsidiaries of RenaissanceRe, namely Renaissance Reinsurance and DaVinci, through reinsurance agreements which will be collateralized and funded by Mona Lisa Re through the issuance of one or more series of principal-at-risk variable rate notes to third-party investors. Upon issuance of a series of notes by Mona Lisa Re, all of the proceeds from the issuance are expected to be deposited into collateral accounts, separated by series, to fund any potential obligation under the reinsurance agreements entered into with Renaissance Reinsurance and/or DaVinci underlying such series of notes. The outstanding principal amount of each series of notes generally will be returned to holders of such notes upon the expiration of the risk period underlying such notes, unless an event occurs which causes a loss under the applicable series of notes, in which case the amount returned will be reduced by such noteholder’s pro rata share of such loss, as specified in the applicable governing documents of such notes. In addition, holders of such notes are generally entitled to interest payments, payable quarterly, as determined by the applicable governing documents of each series of notes. The Company concluded that Mona Lisa Re meets the definition of a VIE as it does not have sufficient equity capital to finance its activities. Therefore, the Company evaluated its relationship with Mona Lisa Re and concluded it does not have a variable interest in Mona Lisa Re. As a result, the financial position and results of operations of Mona Lisa Re are not consolidated by the Company. At September 30, 2016, the total assets and total liabilities of Mona Lisa Re were $187.5 million and $187.5 million, respectively (December 31, 2015 - $184.0 million and $184.0 million, respectively). The only transactions related to Mona Lisa Re that are recorded in the Company’s consolidated financial statements are the ceded reinsurance agreements entered into by Renaissance Reinsurance and DaVinci which are accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance. Renaissance Reinsurance and DaVinci have together entered into ceded reinsurance contracts with Mona Lisa Re with gross premiums ceded of $7.4 million and $5.1 million, respectively, during the nine months ended September 30, 2016 (2015 - $7.3 million and $5.0 million, respectively). In addition, Renaissance Reinsurance and DaVinci recognized ceded premiums earned related to the ceded reinsurance contracts with Mona Lisa Re of $5.4 million and $3.7 million, respectively, during the nine months ended September 30, 2016 (2015 - $5.4 million and $3.7 million, respectively).

VARIABLE INTEREST ENTITIES

Upsilon RFO

Effective January 1, 2013, the Company formed and launched Upsilon RFO, a managed joint venture, and a Bermuda domiciled special purpose insurer, to provide additional capacity to the worldwide aggregate and per-occurrence retrocessional property catastrophe excess of loss market.

The shareholders (other than the Class A shareholder) participate in substantially all of the profits or losses of Upsilon RFO while their shares remain outstanding. The shareholders (other than the Class A shareholder) indemnify Upsilon RFO against losses relating to insurance risk and therefore these shares have been accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance.

Upsilon RFO is considered a VIE as it has insufficient equity capital to finance its activities without additional financial support. The Company is the primary beneficiary of Upsilon RFO as it has the power over the activities that most significantly impact the economic performance of Upsilon RFO and has the obligation to absorb expected losses and the right to receive expected benefits that could be significant to Upsilon RFO, in accordance with the accounting guidance. As a result, the Company consolidates Upsilon RFO and all significant inter-company transactions have been eliminated. Other than its equity investment in Upsilon RFO, the Company has not provided financial or other support to Upsilon RFO that it was not contractually required to provide.

2015

During 2015, Upsilon RFO returned capital to all of the investors who participated in risks incepting during 2014, including the Company. The total amount of capital returned was $420.2 million, including $132.3 million to the Company.

In conjunction with risks incepting during 2015, $153.7 million of Upsilon RFO non-voting preference shares were issued to unaffiliated third-party investors through their investment in Upsilon Fund. Additionally, $42.5 million of the non-voting preference shares were issued to the Company, representing a 21.7% participation in the risks assumed by Upsilon RFO incepting during 2015.

2016

During the nine months ended September 30, 2016, Upsilon RFO returned $242.5 million of capital to its investors, including $59.8 million to the Company. In addition, during the nine months ended September 30, 2016, $166.6 million of Upsilon RFO non-voting preference shares were issued to existing investors therein, including $55.2 million to the Company. At September 30, 2016, the Company’s participation in the risks assumed by Upsilon RFO was 28.9%.

At September 30, 2016, the Company’s consolidated balance sheet included total assets and total liabilities of Upsilon RFO of $215.4 million and $215.4 million, respectively (December 31, 2015 - $250.6 million and $250.5 million, respectively).

Mona Lisa Re Ltd. (“Mona Lisa Re”)

On March 14, 2013, Mona Lisa Re was licensed as a Bermuda domiciled special purpose insurer to provide reinsurance capacity to subsidiaries of RenaissanceRe, namely Renaissance Reinsurance and DaVinci, through reinsurance agreements which will be collateralized and funded by Mona Lisa Re through the issuance of one or more series of principal-at-risk variable rate notes to third-party investors.

Upon issuance of a series of notes by Mona Lisa Re, all of the proceeds from the issuance are expected to be deposited into collateral accounts, separated by series, to fund any potential obligation under the reinsurance agreements entered into with Renaissance Reinsurance and/or DaVinci underlying such series of notes. The outstanding principal amount of each series of notes generally will be returned to holders of such notes upon the expiration of the risk period underlying such notes, unless an event occurs which causes a loss under the applicable series of notes, in which case the amount returned will be reduced by such noteholder’s pro rata share of such loss, as specified in the applicable governing documents of such notes. In addition, holders of such notes are generally entitled to interest payments, payable quarterly, as determined by the applicable governing documents of each series of notes.

The Company concluded that Mona Lisa Re meets the definition of a VIE as it does not have sufficient equity capital to finance its activities. Therefore, the Company evaluated its relationship with Mona Lisa Re and concluded it does not have a variable interest in Mona Lisa Re. As a result, the financial position and results of operations of Mona Lisa Re are not consolidated by the Company. At September 30, 2016, the total assets and total liabilities of Mona Lisa Re were $187.5 million and $187.5 million, respectively (December 31, 2015 - $184.0 million and $184.0 million, respectively).

The only transactions related to Mona Lisa Re that are recorded in the Company’s consolidated financial statements are the ceded reinsurance agreements entered into by Renaissance Reinsurance and DaVinci which are accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance. Renaissance Reinsurance and DaVinci have together entered into ceded reinsurance contracts with Mona Lisa Re with gross premiums ceded of $7.4 million and $5.1 million, respectively, during the nine months ended September 30, 2016 (2015 - $7.3 million and $5.0 million, respectively). In addition, Renaissance Reinsurance and DaVinci recognized ceded premiums earned related to the ceded reinsurance contracts with Mona Lisa Re of $5.4 million and $3.7 million, respectively, during the nine months ended September 30, 2016 (2015 - $5.4 million and $3.7 million, respectively).