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Noncontrolling Interests (Narrative) (Details) (USD $) |  |  | 0 Months Ended | 12 Months Ended |  |  | 1 Months Ended | 3 Months Ended |  |  |  |  |  | 1 Months Ended |  |  | 3 Months Ended | 12 Months Ended |  |
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Mar. 31, 2014 | Dec. 31, 2013 | Dec. 01, 2013 Angus | Dec. 31, 2013 Angus | Mar. 31, 2014 Angus | Sep. 30, 2013 Angus | Feb. 28, 2014 DaVinciRe | Mar. 31, 2014 DaVinciRe | Mar. 31, 2013 DaVinciRe | Jan. 31, 2014 DaVinciRe | Jan. 03, 2014 DaVinciRe | Dec. 31, 2013 DaVinciRe | Jan. 02, 2013 DaVinciRe | Dec. 31, 2012 DaVinciRe | Jan. 31, 2014 DaVinciRe Redeemable Noncontrolling Interest | Jan. 31, 2013 DaVinciRe Redeemable Noncontrolling Interest | Sep. 30, 2013 DaVinciRe Redeemable Noncontrolling Interest | Mar. 31, 2014 DaVinciRe Redeemable Noncontrolling Interest Maximum | Mar. 31, 2014 Medici | Mar. 31, 2013 Medici | Dec. 31, 2013 Medici | Dec. 31, 2012 Medici | Mar. 31, 2014 Angus Fund RRV U.S. Holdings LLC | Mar. 31, 2014 Angus Fund RenTech U.S. Holdings LLC
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Redemption Provision, Notice Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,400,000 |  | $ 37,200,000 |  |  |
Parent company ownership in redeemable noncontrolling interest |  |  |  |  |  |  |  | 26.50% |  |  | 26.50% | 27.30% | 32.90% | 30.80% |  |  |  |  | 43.60% |  | 73.90% |  | 1.10% | 35.00%
Redeemable Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests, Reserve Holdback Payments |  |  |  |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase requests, limit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |
Redeemable noncontrolling interest, reserve holdback |  |  |  |  |  |  |  |  |  | 60,000,000 |  |  |  |  |  | 20,500,000 |  |  |  |  |  |  |  |
Proceeds from sale of partial interest in consolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 77,400,000 |  |  |  |  |  |  |
Redeemable noncontrolling interest | 986,981,000 | 1,099,860,000 |  |  |  |  |  | 895,391,000 | 875,770,000 |  |  | 1,063,368,000 |  | 968,259,000 |  |  |  |  | 91,590,000 | 0 | 36,492,000 | 0 |  |
Issuance of equity to third party investors |  |  |  |  |  |  |  | 9,722,000 | 54,927,000 |  |  |  |  |  |  |  |  |  | 55,385,000 | 0 |  |  |  |
Redeemable noncontrolling interest, net redemptions |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 | 150,000,000 |  |  |  |  |  |  |  |
Investments in subsidiaries | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,000 | 2,000,000
Redemption of shares from redeemable noncontrolling interest |  |  |  |  |  |  |  | 218,879,000 | 186,231,000 |  |  |  |  |  |  |  |  |  | 1,875,000 | 0 | 1,325,000 |  |  |
Non Cash Transfer To Acquire Equity Method Investments |  |  | 2,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 42.50% | 40.40% | 38.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, Acquired During Period |  |  |  | $ 1,705,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- 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. + References No definition available. + Details
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- Definition Noncontrolling Interest, Redemption Provision, Notice Period + References No definition available. + Details
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- Definition Proceeds from Divestiture of Partial Interest in Consolidated Subsidiaries + References No definition available. + Details
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- Definition Reserve holdback. + References No definition available. + Details
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- Definition Redeemable Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests, Reserve Holdback Payments + References No definition available. + Details
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- Definition Represents a sale (new stock issuance) by a subsidiary to noncontrolling interests (third parties, parties directly or indirectly unrelated to parent) during the period. The capital transaction by subsidiary does not result in a loss of control by the parent, but does effect a change in total (consolidated) equity attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591554-111686 + Details
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- Definition 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 -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591554-111686 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569655-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4616395-111683 + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Definition Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders. + References No definition available. + Details
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 + Details
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