Liability for unpaid claims and claims adjustment expense amount disposed of.

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- Definition

Reinsurance Recoverables Adjustment.

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Reinsurance recoverables, total recoverable from ADC plus closing date ceded reserves

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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

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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No definition available.

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Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs.

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Amount, after effects of reinsurance, of payments to settle claims incurred in prior periods and related claims settlement costs.

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- Definition

Amount of foreign currency gain (loss) which decreases (increases) the cost of settling unpaid claims after deduction of reinsurance recoveries. Includes, but is not limited to, claims which have been incurred but not reported.

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No definition available.

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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process.

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- Definition

Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims.

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Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process.

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Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

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Amount, after effects of reinsurance, of expense for claims incurred in the current reporting period and related claims settlement costs.

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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

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Reserves for Losses and Adjustment Expenses - Reconciliation of Beginning and Ending Consolidated Loss and Loss Adjustment Expenses (LAE) Reserves (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	May 30, 2022	Dec. 31, 2021	Mar. 02, 2020
Insurance [Abstract]
Provision for losses and LAE, beginning balance	$ 7,710.9	$ 7,611.8
Less reinsurance recoverable			$ (4,897.7)		$ (3,298.1)
Net losses and LAE reserves, beginning balance	2,813.2	4,313.7
Movement in net provision for losses and LAE for claims incurred:
Current year	723.5	775.0
Prior years	(6.4)	(7.3)
Total incurred	717.1	767.7
Net Losses and LAE payments for claims incurred:
Current year	(30.8)	(35.5)
Prior years	(438.6)	(616.9)
Total paid	(469.4)	(652.4)
Foreign exchange losses/(gains)	22.0	(83.6)
Net losses and LAE reserves, ending balance	3,082.9	2,505.3
Plus reinsurance recoverable on unpaid losses at the end of the period	4,658.0	5,006.5	4,897.7
Provision for losses and LAE at the end of the period	7,740.9	7,511.8
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Net loss and LAE expenses transferred (1)	0.0	1,840.1
Plus reinsurance recoverable on unpaid losses at the end of the period	4,658.0	5,006.5	$ 4,897.7
Reinsurance Contracts [Axis]: LPT
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Reinsurance recoverable total				$ 2,610.1
Insurance
Movement in net provision for losses and LAE for claims incurred:
Prior years	(8.5)
Net Losses and LAE payments for claims incurred:
Provision for losses and LAE at the end of the period	1,641.7	$ 1,314.9
Insurance \| Reinsurance Contracts [Axis]: LPT, deferred gain
Movement in net provision for losses and LAE for claims incurred:
Prior years	(13.2)
Insurance \| Reinsurance Contracts [Axis]: LPT, offset post-LPT years
Movement in net provision for losses and LAE for claims incurred:
Prior years	$ (4.7)
Enstar
Net Losses and LAE payments for claims incurred:
Plus reinsurance recoverable on unpaid losses at the end of the period						$ 770.0
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Plus reinsurance recoverable on unpaid losses at the end of the period						770.0
Enstar \| Reinsurance Contracts [Axis]: LPT losses reinsured]
Net Losses and LAE payments for claims incurred:
Plus reinsurance recoverable on unpaid losses at the end of the period						3,120.0
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Plus reinsurance recoverable on unpaid losses at the end of the period						$ 3,120.0