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Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Jan. 01, 2015	Jul. 01, 2014	Jun. 30, 2014	Jan. 01, 2014
DaVinciRe Holdings Ltd.
Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, ownership percentage			26.30%	23.40%	26.30%	23.40%	26.50%	26.50%
Noncontrolling interest, value subscribed			$ 0	$ 48,576
Redemption of shares from redeemable noncontrolling interests			$ 212,750	$ 224,455
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest
Noncontrolling Interest [Line Items]
Share repurchase requests, percent of aggregate shares, limit			50.00%
Redeemable noncontrolling interest, net redemptions	$ 225,000	$ 300,000
Redeemable noncontrolling interest, Reserve holdback	$ 22,500	$ 30,000
Proceeds from sale of partial interest in consolidated subsidiary						$ 38,900
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest | Maximum
Noncontrolling Interest [Line Items]
Share repurchase requests, limit			25.00%
Medici
Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, ownership percentage			46.10%	53.20%
Noncontrolling interest, value subscribed			$ 36,073	$ 57,264
Redemption of shares from redeemable noncontrolling interests			$ 20,117	$ 3,075

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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Reserve holdback.

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Redeemable Noncontrolling Interest, Redemption Requirement, Percentage of Aggregate Shares Held, Maximum

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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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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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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