Organization (Details)	3 Months Ended
Mar. 31, 2020
Variable Interest Entity, Not Primary Beneficiary \| RenaissanceRe Upsilon Fund Ltd.
Variable Interest Entity [Line Items]
Percent of segregated funds owned by third party investors	100.00%

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.

No definition available.

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Balance Type:	na
Period Type:	duration