Increase (Decrease) In Funds Held Under Insurance Agreements

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- Definition

Proceeds from Divestiture of Partial Interest in Consolidated Subsidiaries

+ References

No definition available.

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- Definition

Variable Interest Entity, Nonredeemable Nonvoting Shares, Segregated Funds, Owned by Third Parties

+ References

No definition available.

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- Definition

Variable Interest Entity, Qualitative or Quantitative Information, Risk Participation Percentage

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ 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 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

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- Definition

Amount of earned premiums ceded to other entities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 2

-Subparagraph (SX 210.12-17)

-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.1)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

-Subparagraph (b),(c)(2)

-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 7

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6486662&loc=d3e27175-158546

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4M

-URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591554-111686

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- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

+ Details

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- Definition

The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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- Definition

Amount of direct and assumed premiums written.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685

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Variable Interest Entities (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended
Variable Interest Entities (Details) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 13, 2014	Dec. 31, 2013	Jan. 02, 2013	Jul. 02, 2013
Variable Interest Entity [Line Items]
Gross premiums written	$ 132,780,000us-gaap_PremiumsWrittenGross	$ 200,992,000us-gaap_PremiumsWrittenGross	$ 511,540,000us-gaap_PremiumsWrittenGross	$ 705,260,000us-gaap_PremiumsWrittenGross	$ 84,122,000us-gaap_PremiumsWrittenGross	$ 182,649,000us-gaap_PremiumsWrittenGross	$ 703,223,000us-gaap_PremiumsWrittenGross	$ 635,418,000us-gaap_PremiumsWrittenGross	$ 1,550,572,000us-gaap_PremiumsWrittenGross	$ 1,605,412,000us-gaap_PremiumsWrittenGross	$ 1,551,591,000us-gaap_PremiumsWrittenGross
Investment in variable interest entity									0	0	0
Total assets	8,203,550,000us-gaap_Assets				8,179,131,000us-gaap_Assets				8,203,550,000us-gaap_Assets	8,179,131,000us-gaap_Assets			8,179,131,000us-gaap_Assets
Total liabilities	3,206,127,000us-gaap_Liabilities				3,174,887,000us-gaap_Liabilities				3,206,127,000us-gaap_Liabilities	3,174,887,000us-gaap_Liabilities			3,174,887,000us-gaap_Liabilities
Capital raised by third party investors	374,108,000us-gaap_OtherLiabilities				397,596,000us-gaap_OtherLiabilities				374,108,000us-gaap_OtherLiabilities	397,596,000us-gaap_OtherLiabilities			397,596,000us-gaap_OtherLiabilities
Ceded Premiums Earned									453,658,000us-gaap_CededPremiumsEarned	412,415,000us-gaap_CededPremiumsEarned	430,374,000us-gaap_CededPremiumsEarned
RenaissanceRe Upsilon Fund Ltd \| Not Primary Beneficiary
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonredeemable Nonvoting Shares, Segregated Funds, Owned by Third Parties												100.00%
Upsilon RFO \| Primary Beneficiary
Variable Interest Entity [Line Items]
Gross premiums written														53,500,000
Variable interest entity, ownership percentage			23.90%	38.90%										55.60%
Capital provided through an insurance contract			5,000,000	15,000,000										17,500,000
Risk participation percentage			15.00%	33.60%					30.50%				25.80%	42.90%
Total assets	621,300,000				474,200,000				621,300,000	474,200,000			474,200,000
Total liabilities	621,300,000				474,200,000				621,300,000	474,200,000			474,200,000
Capital raised by third party investors	135,700,000				156,300,000				135,700,000	156,300,000			156,300,000
Upsilon RFO \| Primary Beneficiary \| Non-voting shares
Variable Interest Entity [Line Items]
Non-voting shares issued to third parties			43,100,000	172,400,000										61,000,000
Investment in variable interest entity			13,500,000	109,700,000										76,400,000
Proceeds from sale of partial interest in consolidated subsidiary															25,000,000
Mona Lisa Re \| Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total assets	184,000,000				209,600,000				184,000,000	209,600,000			209,600,000
Total liabilities	184,000,000				209,600,000				184,000,000	209,600,000			209,600,000
Renaissance Reinsurance \| Mona Lisa Re
Variable Interest Entity [Line Items]
Gross premiums written									7,400,000	9,200,000
Ceded Premiums Earned									8,200,000	4,800,000
DaVinciRe \| Mona Lisa Re
Variable Interest Entity [Line Items]
Gross premiums written									5,100,000	6,500,000
Ceded Premiums Earned									$ 5,700,000	$ 3,500,000