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

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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).

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

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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.

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

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Subsequent Events (Details)				1 Months Ended	12 Months Ended
Subsequent Events (Details)	Feb. 01, 2023	Jan. 10, 2023 USD ($) note	Jan. 01, 2023 USD ($)	Feb. 08, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 29, 2021 USD ($)
DaVinci Holdings Ltd. \| Subsequent Event
Subsequent Event [Line Items]
Redeemable noncontrolling interest, ownership percentage			25.40%
Third-Party Investors
Subsequent Event [Line Items]
Redemption of shares from redeemable noncontrolling interests					$ 161,600,000	$ 156,700,000
Third-Party Investors \| Subsequent Event
Subsequent Event [Line Items]
Redemption of shares from redeemable noncontrolling interests			$ 50,200,000
DaVinci Holdings Ltd. \| Subsequent Event
Subsequent Event [Line Items]
Noncontrolling interest, increase from sale of parent equity interest			275,000,000
DaVinci Holdings Ltd.
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed					500,000,000	250,000,000
Redemption of shares from redeemable noncontrolling interests					161,570,000	157,864,000
DaVinci Holdings Ltd. \| Subsequent Event
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed			250,000,000
DaVinci Holdings Ltd. \| Third-Party Investors
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed					284,800,000	150,900,000
DaVinci Holdings Ltd. \| Third-Party Investors \| Subsequent Event
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed			102,200,000
DaVinci Holdings Ltd. \| RenaissanceRe Holdings Ltd.
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed					215,200,000	99,100,000
DaVinci Holdings Ltd. \| RenaissanceRe Holdings Ltd. \| Subsequent Event
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed			$ 147,800,000
DaVinci Holdings Ltd. \| Investor \| Other liabilities
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed					377,200,000
Medici
Subsequent Event [Line Items]
Noncontrolling interest, value subscribed					350,136,000	201,520,000
Redemption of shares from redeemable noncontrolling interests					100,234,000	$ 64,191,000
Medici \| RenaissanceRe Holdings Ltd. \| Primary Beneficiary \| Subsequent Event
Subsequent Event [Line Items]
Variable interest entity, ownership percentage	11.80%
Medici \| RenaissanceRe Holdings Ltd. \| Primary Beneficiary \| Preference shares \| Subsequent Event
Subsequent Event [Line Items]
Investment in variable interest entity				$ 0
Payments of capital distributions				0
Medici \| Investor \| Primary Beneficiary \| Preference shares
Subsequent Event [Line Items]
Investment in variable interest entity					$ 25,700,000
Medici \| Investor \| Primary Beneficiary \| Preference shares \| Subsequent Event
Subsequent Event [Line Items]
Investment in variable interest entity				109,200,000
Payments of capital distributions				$ 17,600,000
Mona Lisa Re \| Not Primary Beneficiary
Subsequent Event [Line Items]
Face amount							$ 250,000,000
Mona Lisa Re \| Not Primary Beneficiary \| Subsequent Event
Subsequent Event [Line Items]
Number of variable rate notes issued \| note		2
Mona Lisa Re \| Not Primary Beneficiary \| Subsequent Event \| Eighty Five Million Principal At Risk Variable Rate Note
Subsequent Event [Line Items]
Face amount		$ 85,000,000
Mona Lisa Re \| Not Primary Beneficiary \| Subsequent Event \| One Hundred Million Principal At Risk Variable Rate Note
Subsequent Event [Line Items]
Face amount		$ 100,000,000