v3.25.4

Stockholders' Equity and Statutory Accounting Practices (Combined statutory capital and surplus and net income (loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statutory Accounting Practices [Line Items]
Pension settlement transaction gain (loss), net of tax		$ (293)
Combined Continental Casualty Companies
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	$ 11,578	11,165
Statutory Accounting Practices, Statutory Net Income Amount	$ 1,258	$ 713	$ 1,172

Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement, Net of Tax

+ References

No definition available.

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- Definition

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+ References

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- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

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Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

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CNA FINANCIAL CORP 10-K