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

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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No definition available.

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt and Credit Facilities (Debt Obligations Narrative) (Details) - USD ($)	Apr. 02, 2019	Dec. 31, 2019	Jun. 29, 2017	May 04, 2015	Mar. 24, 2015	Mar. 17, 2010	Nov. 02, 2005
Bridge Loan \| Platinum Underwriters Holdings, Ltd.
Debt Instrument [Line Items]
Short-term debt					$ 300,000,000.0
Senior Notes \| 3.600% Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate	3.60%	3.60%
Face amount	$ 400,000,000.0
Repayments of long-term lines of credit	$ 200,000,000.0
Senior Notes \| 3.450% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate		3.45%
Senior Notes \| 3.700% Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate		3.70%
Senior Notes \| 5.75% Senior Notes Due March 15, 2020
Debt Instrument [Line Items]
Interest rate		5.75%
Senior Notes \| 4.750% Senior Notes Due May 1, 2025
Debt Instrument [Line Items]
Interest rate		4.75%
RenaissanceRe Finance, Inc. \| 3.700% Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate					3.70%
Face amount					$ 300,000,000.0
RenaissanceRe Finance, Inc. \| Senior Notes \| 3.450% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate			3.45%
Face amount			$ 300,000,000.0
RenRe North America Holdings Inc \| 5.75% Senior Notes Due March 15, 2020
Debt Instrument [Line Items]
Interest rate						5.75%
Face amount						$ 250,000,000.0
Platinum Underwriters Finance, Inc \| Senior Notes \| Series B 7.50% Notes Due June 1, 2017
Debt Instrument [Line Items]
Interest rate							7.50%
Face amount							$ 250,000,000.0
DaVinciRe Holdings Ltd.
Debt Instrument [Line Items]
Loan agreement with related party				$ 100,000,000.0
DaVinciRe Holdings Ltd. \| 4.750% Senior Notes Due May 1, 2025
Debt Instrument [Line Items]
Interest rate				4.75%
Face amount				$ 150,000,000.0