Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS During January 2017, DaVinciRe redeemed $75.0 million of its outstanding shares from certain existing DaVinciRe shareholders, including RenaissanceRe. In connection with the redemption, DaVinciRe retained a $15.0 million holdback. In addition, RenaissanceRe sold an aggregate of $24.0 million of its shares in DaVinciRe to an existing shareholder and a new shareholder. The Company’s noncontrolling economic ownership in DaVinciRe subsequent to these transactions was 22.6%, effective January 1, 2017. During January 2017, Upsilon RFO returned $41.8 million of capital to its investors, including $9.5 million to the Company. In addition, $134.1 million of Upsilon RFO non-voting preference shares were issued to existing investors, including $9.5 million to the Company. During February 2017, an existing third party investor purchased $7.5 million of Upsilon RFO non-voting preference shares from the Company. Effective February 1, 2017, the Company’s participation in the risks assumed by Upsilon RFO was 16.6%. Effective with the risk period incepting on January 1, 2017, Fibonacci Re raised $140.0 million of capital from third party investors and the Company, via participating notes which are listed on the Bermuda Stock Exchange. Effective February 1, 2017, the Company’s net retained economic ownership interest in Fibonacci Re was 7.2%. Subsequent to December 31, 2016 and through the period ended February 17, 2017, third-party investors subscribed for and redeemed an aggregate of $25.9 million and $1.5 million, respectively, of the participating, non-voting common shares of Medici. In addition, the Company subscribed for and redeemed an aggregate of $10.2 million and $10.0 million, respectively, of the participating, non-voting common shares of Medici. As a result of these net subscriptions, the Company’s noncontrolling economic ownership in Medici was 33.7%, effective February 1, 2017. Subsequent to December 31, 2016 and through the period ended February 17, 2017, the Company repurchased 281 thousand common shares in open market transactions at an aggregate cost of $40.0 million and at an average share price of $142.40. On February 22, 2017, RenaissanceRe’s Board of Directors approved an increase in the authorized share repurchase program to an aggregate amount of $500.0 million. Unless terminated earlier by resolution of RenaissanceRe’s Board of Directors, the program will expire when the Company has repurchased the full value of the shares authorized.

SUBSEQUENT EVENTS

During January 2017, DaVinciRe redeemed $75.0 million of its outstanding shares from certain existing DaVinciRe shareholders, including RenaissanceRe. In connection with the redemption, DaVinciRe retained a $15.0 million holdback. In addition, RenaissanceRe sold an aggregate of $24.0 million of its shares in DaVinciRe to an existing shareholder and a new shareholder. The Company’s noncontrolling economic ownership in DaVinciRe subsequent to these transactions was 22.6%, effective January 1, 2017.

During January 2017, Upsilon RFO returned $41.8 million of capital to its investors, including $9.5 million to the Company. In addition, $134.1 million of Upsilon RFO non-voting preference shares were issued to existing investors, including $9.5 million to the Company. During February 2017, an existing third party investor purchased $7.5 million of Upsilon RFO non-voting preference shares from the Company. Effective February 1, 2017, the Company’s participation in the risks assumed by Upsilon RFO was 16.6%.

Effective with the risk period incepting on January 1, 2017, Fibonacci Re raised $140.0 million of capital from third party investors and the Company, via participating notes which are listed on the Bermuda Stock Exchange. Effective February 1, 2017, the Company’s net retained economic ownership interest in Fibonacci Re was 7.2%.

Subsequent to December 31, 2016 and through the period ended February 17, 2017, third-party investors subscribed for and redeemed an aggregate of $25.9 million and $1.5 million, respectively, of the participating, non-voting common shares of Medici. In addition, the Company subscribed for and redeemed an aggregate of $10.2 million and $10.0 million, respectively, of the participating, non-voting common shares of Medici. As a result of these net subscriptions, the Company’s noncontrolling economic ownership in Medici was 33.7%, effective February 1, 2017.

Subsequent to December 31, 2016 and through the period ended February 17, 2017, the Company repurchased 281 thousand common shares in open market transactions at an aggregate cost of $40.0 million and at an average share price of $142.40.

On February 22, 2017, RenaissanceRe’s Board of Directors approved an increase in the authorized share repurchase program to an aggregate amount of $500.0 million. Unless terminated earlier by resolution of RenaissanceRe’s Board of Directors, the program will expire when the Company has repurchased the full value of the shares authorized.