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Liabilities, total gains (losses) included in AOCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Debt securities, trading, realized gain (loss) Debt Securities, Trading, Realized Gain (Loss) Earnings before income taxes Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Total other segment items: Segment Reporting, Other Items, Total Segment Reporting, Other Items, Total Revenues Revenues [Abstract] Change in Unrealized Included in OCI Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI Collateral held Collateral Already Posted, Aggregate Fair Value Greater than 2.50% Policyholder Account Balance, Above Guaranteed Minimum Crediting Rate, Range, Greater Than 2.50% [Member] Policyholder Account Balance, Above Guaranteed Minimum Crediting Rate, Range, Greater Than 2.50% Pension Benefits Adjustments, Footnote Pension Benefits 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Progress Software Corp., No. 1:23-cv-12067 Cooper v. Progress Software Corp., No. 1:23-cv-12067 [Member] Cooper v. 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Income Statement [Abstract] Document Transition Report Document Transition Report Weighted-average duration of liability for future policyholder benefits (years) Liability for Future Policy Benefit, Weighted-Average Duration Recognized gains and (losses), net Recognized gains and (losses), net Recognized gains and (losses), net Gain (Loss) on Investments Deferred tax asset, net Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Mortality rate Long-Duration Contracts, Assumptions by Product and Guarantee, Mortality Rate Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Table Text Block] Reinsurance recoverable, net of allowance for credit losses of $20 in 2026 and $18 in 2025 Reinsurance recoverable, net of allowance for expected credit losses Less: Reinsurance recoverable Reinsurance Recoverables, Including Reinsurance Premium Paid Other Commitments [Domain] Other Commitments [Domain] City Area Code City Area Code Net 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Contingency Nature [Axis] Loss Contingency Nature [Axis] Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Deferred Sale Inducement Cost [Line Items] Deferred Sale Inducement Cost [Line Items] Financial Instruments [Domain] Financial Instruments [Domain] 51 Basis Points-150 Basis Points Above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 [Member] Somerset Reinsurance Ltd Somerset [Member] Somerset Recoveries of amounts previously written off Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Recovery 2022 2021 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Net earnings attributable to F&G common shareholders per common share Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Derivative investments Derivative investments Derivative Asset Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Underlying Securities Award Underlying Securities Amount Statutory Net income (loss): Statutory Accounting Practices, Statutory Net Income (Loss) Amount Statutory Accounting Practices, Statutory Net Income (Loss) Amount Fair Value Total Estimated Fair Value Estimate of Fair Value Measurement [Member] Issuance of common stock Stock Issued During Period, Value, New Issues Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Beginning balance at original discount rate Ending balance at original discount rate Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance 7.950% Senior Notes Due 2053 7.95% F&G Senior Notes, due 2053 7.950% Senior Notes Due 2053 [Member] 7.950% Senior Notes Due 2053 Fixed maturity securities, 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of Business Acquired [Table Text Block] Schedule of Value of Business Acquired Deferred Profit Liability Activity Deferred Profit Liability Activity [Roll Forward] Deferred Profit Liability Activity (Gain) on sale of F&G Life Re Gain (loss) on disposition of business Gain (Loss) on Disposition of Business 2023 Repurchase Program 2023 Repurchase Program [Member] 2023 Repurchase Program Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Provision (expense) benefit for loan losses Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Derivative [Line Items] Derivative [Line Items] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Change in instrument-specific credit risk - market risk benefits AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent [Member] Dividends 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Disclosure [Abstract]