Loss and Loss Adjustment Expense Reserves - TPC Participation (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Syndicate - Ark Insurance Holdings Limited
Liability for Claims and Claims Adjustment Expense [Line Items]
Percent of underwriting capital provided by third parties	0.00%	42.80%	58.30%

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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