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- Definition

Policyholder Benefits and Claims Incurred, Retroactive Reinsurance Adjustment, Ceded Loss Reserves

+ References

No definition available.

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- Definition

Reinsurance, Excess Retention Unexpired Limit, Amount Reinsured, Per Policy

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- Definition

Reserves For Losses And LAE [Line Items]

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- Definition

Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-Publisher FASB
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- Definition

Amount of funds held as security for payments to be received under reinsurance contracts.

+ References

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- Definition

Amount, after effects of reinsurance, of increase (decrease) in the liability for unpaid claims and claims adjustment expense.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 40
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- Definition

Cash payments made for reinsurance during the current period.

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-Paragraph 25
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- Definition

Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.

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-SubTopic 605
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- Definition

Amount of reduction of provision for policy benefits and costs incurred for policies ceded.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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- Definition

Amount per policy of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

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- Definition

Amount per policy of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

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- Definition

Percentage of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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RESERVE FOR LOSSES AND LAE - Narrative (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 01, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Reserves For Losses And LAE [Line Items]
Current year				$ 2,625	$ 3,375
Prior year incurred unfavorable (favorable) development						$ (104)
Funds held under reinsurance treaties		$ 244		244		247
Funds held by reinsureds		410		410		372
Incurred losses and loss adjustment expenses		1,289	$ 1,532	2,520	3,400
Ceded loss reserves		1,006		1,006		1,000
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| State National Reinsurer
Reserves For Losses And LAE [Line Items]
Lumpsum annuities ( in percent)	85.70%
Funds held under reinsurance agreement, excess of liability	$ 600
Reinsurance agreements				592		597
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| MS Transverse Reinsurance
Reserves For Losses And LAE [Line Items]
Payments for coverage	$ 122
Lumpsum annuities ( in percent)	80.00%
Funds held under reinsurance agreement, excess of liability	$ 400
Reinsurance agreements				400		400
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Group, Ltd.
Reserves For Losses And LAE [Line Items]
Funds held under reinsurance treaties	5,400
Deferred gain		8		8		3
Losses ceded				1,260		1,250
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Group, Ltd. \| State National Reinsurer
Reserves For Losses And LAE [Line Items]
Payments for coverage	1,300
Co-participation per layer	1,300
Funds held by reinsureds	250
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Group, Ltd. \| MS Transverse Reinsurance
Reserves For Losses And LAE [Line Items]
Payments for coverage	122
Incurred losses and loss adjustment expenses	122
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Reinsurance Holdings, Inc
Reserves For Losses And LAE [Line Items]
Deferred gain		$ 6		6		3
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Reinsurance Holdings, Inc \| State National Reinsurer
Reserves For Losses And LAE [Line Items]
Payments for coverage	1,000
Co-participation per layer	1,000
Funds held by reinsureds	201
Reinsurance Contract [Axis]: Adverse Development Cover Reinsurance Agreements \| Everest Reinsurance Holdings, Inc \| MS Transverse Reinsurance
Reserves For Losses And LAE [Line Items]
Payments for coverage	$ 44
Higher Premiums Earned
Reserves For Losses And LAE [Line Items]
Current year incurred losses				369
Catastrophe Losses
Reserves For Losses And LAE [Line Items]
Current year				113	495
Current year incurred losses				382
Prior year incurred unfavorable (favorable) development						(42)
Hurricanes, Typhoons, Cyclones And Other Weather Related Events
Reserves For Losses And LAE [Line Items]
Current year				106
Foreign Conflict
Reserves For Losses And LAE [Line Items]
Current year				$ 7
Catastrophe Losses, WildFires
Reserves For Losses And LAE [Line Items]
Current year					462
Earthquake
Reserves For Losses And LAE [Line Items]
Current year					20
Catastrophe Losses, Other Weather Related Events
Reserves For Losses And LAE [Line Items]
Current year					$ 12
Attritional Losses
Reserves For Losses And LAE [Line Items]
Prior year incurred unfavorable (favorable) development						(62)
Well-Seasoned Reserves
Reserves For Losses And LAE [Line Items]
Prior year incurred unfavorable (favorable) development						(76)
Baltimore Bridge Collapse
Reserves For Losses And LAE [Line Items]
Prior year incurred unfavorable (favorable) development						$ 33