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Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Jan. 01, 2016	Jan. 01, 2015
DaVinciRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			24.00%		26.30%		26.30%
Sale of shares to redeemable noncontrolling interest			$ 43,040	$ 0
Redemption of shares from redeemable noncontrolling interest			$ 90,818	207,898
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest						24.00%
Redeemable noncontrolling interest, net redemptions	$ 100,000	$ 225,000
Redeemable noncontrolling interest, reserve holdback	$ 10,000	$ 22,500
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest | Maximum
Redeemable Noncontrolling Interest [Line Items]
Share repurchase requests, limit			25.00%
RenaissanceRe Medici Fund Ltd.
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			39.00%		46.10%
Redemption provision, notice period			30 days
Sale of shares to redeemable noncontrolling interest			$ 39,500	19,643	$ 36,100
Redemption of shares from redeemable noncontrolling interest			$ 940	$ 14,684	$ 20,100

X

- Definition

This item limits the aggregate of all share repurchase requests to 25% of DaVinciRe's capital in any given year and satisfying all applicable regulatory requirements. If total shareholder requests exceed 25% of DaVinciRe's capital, the number of shares repurchased will be reduced among the requesting shareholders pro-rata, based on the amounts desired to be repurchased.

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The increase (decrease) during the period impacting the parent's ownership interest in a subsidiary as it relates to the total (consolidated) equity attributable to the parent. The changes to the parent's ownership interest in a subsidiary represented by this element did not arise in a deconsolidation of the subsidiary from the consolidated financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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