Debt Instrument, Number Of Series

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685

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Subsequent Events (Details)				12 Months Ended
Subsequent Events (Details)	Jan. 10, 2020 USD ($) series	Jan. 01, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Upsilon RFO Re Ltd. \| Primary Beneficiary \| Investor \| Non-voting preference shares
Subsequent Event [Line Items]
Investment in variable interest entity				$ 618,700,000	$ 512,800,000	$ 856,700,000
Upsilon RFO Re Ltd. \| Primary Beneficiary \| RenaissanceRe Holdings Ltd.
Subsequent Event [Line Items]
Variable interest entity, ownership percentage				16.50%		14.00%
Upsilon RFO Re Ltd. \| Primary Beneficiary \| RenaissanceRe Holdings Ltd. \| Non-voting preference shares
Subsequent Event [Line Items]
Investment in variable interest entity				$ 100,000,000.0		$ 109,800,000
Subsequent Event \| Upsilon RFO Re Ltd. \| Primary Beneficiary \| Investor \| Non-voting preference shares
Subsequent Event [Line Items]
Investment in variable interest entity		$ 620,900,000
Subsequent Event \| Upsilon RFO Re Ltd. \| Primary Beneficiary \| RenaissanceRe Holdings Ltd.
Subsequent Event [Line Items]
Variable interest entity, ownership percentage		16.50%
Subsequent Event \| Upsilon RFO Re Ltd. \| Primary Beneficiary \| RenaissanceRe Holdings Ltd. \| Non-voting preference shares
Subsequent Event [Line Items]
Investment in variable interest entity		$ 103,100,000
Subsequent Event \| Mona Lisa Re \| Not Primary Beneficiary
Subsequent Event [Line Items]
Number of series of notes \| series	2
Face amount	$ 400,000,000.0
Other liabilities \| Upsilon RFO Re Ltd. \| Primary Beneficiary \| Investor \| Non-voting preference shares
Subsequent Event [Line Items]
Investment in variable interest entity			$ 462,800,000