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Affiliated Quota Share Reinsurance Agreements, Percentage

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Investment Owned, Shares, Shares Received in Exchange from Affiliated Entity for Transfer

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Investment Owned, Shares, Transferred to Affiliated Entity

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Preferred Stock Par Value

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Reinsurance, Annual Coverage Fee

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Reinsurance, Stop Loss Agreement, Participation Percentage

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Reinsurance, Stop Loss Agreement, Term

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Whole Account Quota Share Reinsurance Agreement, Percentage

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- Definition

Amount of earned premiums ceded to other entities.

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Amount of written premiums ceded to other entities.

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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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The percentage rate used to calculate dividend payments on preferred stock.

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Gross amount, as of the balance sheet date, due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, before deducting the allowance for doubtful accounts.

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Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

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RELATED-PARTY TRANSACTIONS - Narrative (Details) € in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions							1 Months Ended	3 Months Ended			5 Months Ended	6 Months Ended								12 Months Ended								72 Months Ended	132 Months Ended	192 Months Ended
	Jul. 01, 2026 AUD ($)	Dec. 01, 2025 USD ($)	Jan. 01, 2025	Jan. 01, 2018	Dec. 31, 2017 USD ($)	Oct. 01, 2008 USD ($)	Dec. 31, 2015 USD ($) shares	Jun. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 CAD ($)	Jun. 30, 2026 GBP (£)	Jun. 30, 2026 SGD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024	Jun. 30, 2027 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 AUD ($)	Mar. 31, 2026 USD ($)	Jan. 31, 2026 EUR (€)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 GBP (£)	Jun. 30, 2023	Dec. 31, 2009	Dec. 31, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Shares received in exchange from affiliated entity for transfer (in shares) \| shares							1,773.214
Shares transferred to affiliated entity (in shares) \| shares							9,719,971
Aggregate loss												$ 2,520.0						$ 3,400.0
Everest Reinsurance Company (Everest Re)
Related Party Transaction [Line Items]
Unpaid recoverable								$ 7.0				7.0					$ 24.0				$ 7.0
Loss recognized upon settlement		$ 6.0
Bermuda Re
Related Party Transaction [Line Items]
Participation shares (in percent)																									70.00%	70.00%
Amount of transfer						$ 747.0
Subject loss reserves					$ 2,300.0
Bermuda Re \| Cash And Fixed Maturity Securities
Related Party Transaction [Line Items]
Amount transferred					1,000.0
Bermuda Re \| Loss Reserves
Related Party Transaction [Line Items]
Amount transferred					970.0
Everest International Reinsurance, Ltd.
Related Party Transaction [Line Items]
Participation shares (in percent)																									30.00%	30.00%
Affiliated Entity
Related Party Transaction [Line Items]
Preferred shares par value							$ 1.0
Annual dividend rate							1.75%
Aggregate loss									$ 10.0
Ceded written premiums								75.0		$ 88.0		205.0						294.0
Ceded earned premiums								88.0		$ 118.0		178.0						234.0
Affiliated Entity \| Coverage Period, 2002 Through 2017
Related Party Transaction [Line Items]
Total reinsurance recoverable on unpaid claims								369.0				369.0					443.0				369.0
Affiliated Entity \| Coverage Period, 2002 Through 2017 \| Minimum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																														20.00%
Affiliated Entity \| Coverage Period, 2002 Through 2017 \| Maximum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																														60.00%
Affiliated Entity \| Coverage Period, 2004 Through 2009
Related Party Transaction [Line Items]
Total reinsurance recoverable on unpaid claims								5.0				5.0					6.0				5.0
Affiliated Entity \| Coverage Period, 2004 Through 2009 \| Minimum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																												2.00%
Affiliated Entity \| Coverage Period, 2004 Through 2009 \| Maximum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																												8.00%
Affiliated Entity \| Coverage Period, 2003 Through 2017 \| Minimum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																													60.00%
Affiliated Entity \| Coverage Period, 2003 Through 2017 \| Maximum
Related Party Transaction [Line Items]
Share reinsurance (in percent)																													75.00%
Affiliated Entity \| Bermuda Re
Related Party Transaction [Line Items]
Aggregate stop loss reinsurance contract (in months)				12 months
Share reinsurance (in percent)				100.00%
Adverse development coverage					$ 500.0
Affiliated Entity \| Bermuda Re \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement												300.0			£ 130		500.0	600.0
Reinsurance agreement, threshold \| £															27
Annual coverage fee															£ 5			54.0								£ 7
Premiums receivable								9.0				9.0					7.0				9.0
Affiliated Entity \| Bermuda Re \| Catastrophe Reinsurance \| Reinsurance Contract [Axis]: Earthquake Events
Related Party Transaction [Line Items]
Reinsurance agreement, threshold												1,300.0					1,100.0	1,100.0
Affiliated Entity \| Bermuda Re \| Catastrophe Reinsurance \| Reinsurance Contract [Axis]: Hurricane Perils
Related Party Transaction [Line Items]
Reinsurance agreement, threshold												1,950.0					1,500.0	$ 1,500.0
Affiliated Entity \| Ireland Insurance \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement \| €													€ 750
Reinsurance agreement, threshold \| €													15
Annual coverage fee \| €													15												€ 26
Affiliated Entity \| Everest Insurance Ireland \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Premiums receivable								31.0				31.0					23.0				31.0
Affiliated Entity \| Ireland Re \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement \| €											€ 90													€ 125
Reinsurance agreement, threshold \| €											€ 18													€ 18
Annual coverage fee \| €													€ 7												€ 9
Premiums receivable								15.0				15.0					11.0				15.0
Affiliated Entity \| Lloyd’s Syndicate 2786 \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement																					8.0		$ 40.0
Reinsurance agreement, threshold																					3.0		8.0
Annual coverage fee																					0.4		$ 4.0
Premiums receivable																	3.0
Affiliated Entity \| Everest Canada \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement														$ 270
Reinsurance agreement, threshold														50
Annual coverage fee														$ 9
Affiliated Entity \| Everest Colombia \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Premiums receivable								16.0				16.0					10.0				16.0
Affiliated Entity \| Everest Mexico \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Premiums receivable								15.0				15.0					12.0				$ 15.0
Weighted average percentage																			0.990
Affiliated Entity \| Everest Mexico \| Catastrophe Reinsurance, Real Estate Fund
Related Party Transaction [Line Items]
Weighted average percentage																					0.997	0.997
Affiliated Entity \| Everest Mexico \| Catastrohpe Reinsurance, All Remaining Lines Of Property And Casualty Business
Related Party Transaction [Line Items]
Weighted average percentage			0.99
Affiliated Entity \| Everest Chile \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement																					$ 180.0
Reinsurance agreement, threshold																					9.0
Annual coverage fee																					7.0
Premiums receivable								12.0				12.0					13.0				12.0
Weighted average percentage																											0.65
Affiliated Entity \| Everest Chile \| Catastrophe Reinsurance \| Forecast
Related Party Transaction [Line Items]
Annual coverage fee																				$ 9.0
Affiliated Entity \| Everest Chile \| Whole Account Quota Share Reinsurance
Related Party Transaction [Line Items]
Premiums receivable								10.0				10.0					11.0				10.0
Affiliated Entity \| Everest International - Australia Branch \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement																						$ 167
Reinsurance agreement, threshold																						73
Annual coverage fee																						4
Premiums receivable								5.0				5.0					4.0				5.0
Affiliated Entity \| Everest International - Australia Branch \| Per Risk And Per Occurrence And Excess Of Loss Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement																						8
Reinsurance agreement, threshold																						65
Annual coverage fee																						$ 11
Premiums receivable								3.0				3.0					$ 0.0				$ 3.0
Affiliated Entity \| Everest International - Australia Branch \| Per Risk And Per Occurrence And Excess Of Loss Reinsurance \| Subsequent Events
Related Party Transaction [Line Items]
Reinsurance agreement	$ 8
Reinsurance agreement, threshold	$ 55
Affiliated Entity \| Everest Assurance - Singapore Branch \| Catastrophe Reinsurance
Related Party Transaction [Line Items]
Reinsurance agreement																$ 9
Reinsurance agreement, threshold																85
Annual coverage fee																$ 2
Affiliated Entity \| Annapurna
Related Party Transaction [Line Items]
Ceded written premiums								132.0				132.0
Ceded earned premiums								37.0				37.0
Ceded losses and LAE								$ 25.0				$ 25.0