Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Return of Capital

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- Definition

Increase (Decrease) In Funds Held Under Insurance Agreements

+ 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)

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-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

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-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

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-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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 7

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-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

+ Details

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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

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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		0 Months Ended	1 Months Ended	3 Months Ended
Variable Interest Entities (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Nov. 13, 2014	Jan. 31, 2015	Jun. 30, 2014	Dec. 31, 2014
Variable Interest Entity [Line Items]
Assets	$ 11,287,198,000us-gaap_Assets					$ 8,203,550,000us-gaap_Assets
Liabilities	5,536,478,000us-gaap_Liabilities					3,206,127,000us-gaap_Liabilities
Other liabilities	231,968,000us-gaap_OtherLiabilities					374,108,000us-gaap_OtherLiabilities
Gross premiums written	643,578,000us-gaap_PremiumsWrittenGross	705,260,000us-gaap_PremiumsWrittenGross
Ceded premiums earned	108,744,000us-gaap_CededPremiumsEarned	113,293,000us-gaap_CededPremiumsEarned
RenaissanceRe Upsilon Fund Ltd \| Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Percent of segregated funds owned by third party investors			100.00%
Upsilon RFO \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	24.30%	38.90%			23.90%
Increase (decrease) in funds held under insurance agreements		15,000,000			5,000,000
Risk participation percentage		33.60%			15.00%
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Return of Capital	352,800,000			317,500,000
Assets	343,600,000					621,300,000
Liabilities	343,600,000					621,300,000
Other liabilities	10,000,000					135,700,000
Mona Lisa Re Ltd \| Renaissance Reinsurance
Variable Interest Entity [Line Items]
Gross premiums written	100,000	0
Ceded premiums earned	1,900,000	2,400,000
Mona Lisa Re Ltd \| DaVinciRe
Variable Interest Entity [Line Items]
Gross premiums written	100,000	0
Ceded premiums earned	1,300,000	1,700,000
Mona Lisa Re Ltd \| Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	181,100,000					184,000,000
Liabilities	181,100,000					184,000,000
Non-Voting Preference Shares \| Upsilon RFO \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Issuance of equity to third party investors	128,700,000	172,400,000			43,100,000
Contributions to subsidiaries	$ 41,300,000	$ 109,700,000			$ 13,500,000