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Rated Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase remaining Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Deferred Policy Acquisition Cost [Line Items] Deferred Policy Acquisition Cost [Line Items] Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Retail Retail Site [Member] Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Market Risk Benefit [Table] Market Risk Benefit [Table] Reinsurance recoverable, allowance for credit losses Reinsurance Recoverable, Allowance for Credit Loss Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Interest expense on advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-Term Schedule of Carrying Amount and Fair Value by Hierarchy of Certain Financial Instruments Not Reported at Fair Value Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block] Liabilities Reinsurance Liabilities [Abstract] Total revenues Revenues Total revenues Revenues Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Securities Collateral Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Limited partnership investments measured at NAV Alternative Investment Due in 1 year or less Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, Year One Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, Year One Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Period of notice prior to termination Security Sold under Agreement to Repurchase, Collateral Upgrade, Subject to Master Netting Arrangement, Termination Notice Security Sold under Agreement to Repurchase, Collateral Upgrade, Subject to Master Netting Arrangement, Termination Notice Corporate securities, collateral upgrade Interest Income, Securities, Collateral Upgrade, US Treasury and Other US Government Interest Income, Securities, Collateral Upgrade, US Treasury and Other US Government BB NRSRO, BB Rating [Member] NRSRO, BB Rating Credit loss expense Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not Previously Recorded Net realized gain (loss) on investments AOCI, Gain (Loss), Debt Securities, Available-for-Sale, without Allowance for Credit Loss, Parent [Member] Operating Benefits and Expenses Operating Costs and Expenses [Abstract] Credit Rating, NRSRO [Axis] Credit Rating, NRSRO [Axis] Credit Rating, NRSRO 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Cash surrender value Separate Account, Liability, Cash Surrender Value, Amount Number of Shares Repurchased Treasury Stock, Shares, Acquired Additions for purchases of PCD debt securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Restricted cash (included in Other assets) Restricted Cash Credit Rating, NRSRO [Domain] Credit Rating, NRSRO [Domain] Credit Rating, NRSRO [Domain] Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] Debt Securities, Available-for-Sale, Allowance for Credit Loss [Line Items] Interest accrual Liability for Future Policy Benefit, Expected Net Premium, Interest Income Other assets Other assets Other Assets Legal Entity [Axis] Legal Entity [Axis] Sub-advisor expenses Sub-advisor expenses Sub-Advisor Expenses Sub-Advisor Expenses Liability Class [Axis] Liability Class [Axis] Purchase of treasury stock Total Payments Treasury Stock, Value, Acquired, Cost Method On or after March 30, 2028 Redemption Period Three [Member] Redemption Period Three Cash, cash equivalents, and restricted cash at beginning of period Total cash, cash equivalents, and restricted cash at end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Issuance of treasury stock Stock Issued During Period, Value, Treasury Stock Reissued Effects of Reinsurance [Table] Effects of Reinsurance [Table] Schedule of Amounts Reclassified Out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Non-NEOs Non-NEOs [Member] Separate Account, Liability [Table] Separate Account, Liability [Table] Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Interest credited on other contract holder funds, net of deferrals and amortization Interest credited Policyholder Account Balance, Interest Expense Schedule of Aggregate Carrying Value of Debt Schedule of Debt [Table Text Block] Gross Amounts Recognized Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Non-agency RMBS Non Agency Residential Mortgage Backed Securities [Member] Non Agency Residential Mortgage Backed Securities Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Purchase of treasury stock Payments for Repurchase of Common Stock Statistical Measurement [Axis] Statistical Measurement [Axis] Due after 10 years through 20 years Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Ten Through Twenty Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Ten Through Twenty Schedule of Gains and Losses, and Change in Fair Value of Derivatives Derivative Instruments, Gain (Loss) [Table Text Block] Earnings per share—common stock Earnings Per Share, Basic and Diluted EPS [Abstract] Earnings Per Share, Basic and Diluted EPS Award Type Award Type [Axis] Unfunded partnership investment commitment Unfunded Partnership Investment Commitment [Member] Unfunded Partnership Investment Commitment Effect of actual variances from expected experience Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] TPG, Inc. TPG, Inc. [Member] TPG, Inc. Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Real estate Real Estate [Member] Debt securities, available for sale, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Equity securities, at fair value Equity securities Equity securities Equity Securities, FV-NI Bond Separate Account, Bond [Member] Separate Account, Bond Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock Issued Common Stock [Member] Debt securities, at fair value under fair value option Debt Securities, Available-for-Sale External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] Increase in authorized amount Stock Repurchase Program , Increase (Decrease) In Authorized Amount Stock Repurchase Program , Increase (Decrease) In Authorized Amount Without single maturity Debt Securities, Allowance For Credit Loss, Maturity, Without Single Maturity Debt Securities, Allowance For Credit Loss, Maturity, Without Single Maturity Due after 20 years Debt Securities, Accumulated Gross Unrealized Loss, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Twenty Debt Securities, Accumulated Gross Unrealized Loss, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Twenty Equity index futures Equity Index Futures [Member] Equity Index Futures Stressed loans Financing Receivable, Stressed Loans Financing Receivable, Stressed Loans Net gains (losses) on derivatives and investments Net gains (losses) on hedging instruments and investments Net unrealized gain (loss) Gain (Loss) On Investments And Derivative Instruments Gain (Loss) On Investments And Derivative Instruments Derivative Contract [Domain] Derivative Contract [Domain] Funds withheld, net of reinsurance Increase (Decrease) in Funds Held under Reinsurance Agreements Other Other Nonoperating Gains (Losses) Derivative assets Derivative Financial Instruments, Assets [Member] Total liabilities and equity Liabilities and Equity Deferred Acquisition Costs Deferred Policy Acquisition Costs [Text Block] Unpaid principal balance Financing Receivable, Impaired, Unpaid Principal Balance Financing Receivable, Impaired, Unpaid Principal Balance Net realized losses (gains) on investments Net realized investment gains (losses) Realized Investment Gains (Losses) Employee Stock Option Share-Based Payment Arrangement, Option [Member] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Noncontrolling interests Equity, Attributable to Noncontrolling Interest Due after 1 year through 5 years Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year One Through Five Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year One Through Five Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Market risk benefit, assets, measurement input Market Risk Benefit, Assets, Measurement Input Market Risk Benefit, Assets, Measurement Input Tabular List, Table Tabular List [Table Text Block] Other impaired securities AOCI, Gain (Loss), Debt Securities, Available-for-Sale, with Allowance for Credit Loss, Parent [Member] Additional paid-in capital Additional Paid in Capital Issuances Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Effect of changes in interest rates Market Risk Benefit, Increase (Decrease) from Interest Rate Change Debt-to-Value [Axis] Debt-to-Value [Axis] Separate Account, Liability [Roll Forward] Separate Account, Liability [Roll Forward] Policy loans not held as collateral for reinsurance Loans, Gross, Insurance Policy, Not Held As Collateral Loans, Gross, Insurance Policy, Not Held As Collateral Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Due after 10 years through 20 years Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Ten Through Twenty Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Ten Through Twenty Less: Dividends on preferred stock Less: Dividends on preferred stock Less: Preferred stock dividends Preferred Stock Dividends and Other Adjustments Fair Value Portion at Other than Fair Value Measurement [Member] Due in 1 year or less Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, Year One Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, Year One Reinsurance quota share basis Reinsurance, Percentage Of Basis Reinsurance, Percentage Of Basis Series A non-cumulative preferred stock and additional paid in capital, $1.00 par value per share: 24,000 shares authorized; 22,000 shares issued and outstanding at June 30, 2026 and December 31, 2025; liquidation preference $25,000 per share (see Note 19) Preferred Stock, Value, Issued Net Amount Security Loaned, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Adjustment to Compensation: Adjustment to Compensation [Axis] Reclassifications from AOCI, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax FHLBI capital stock FHLBI capital stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Derivative liabilities Derivative Financial Instruments, Liabilities [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Federal home loan bank advances Federal Home Loan Bank, Advance, Branch of FHLBank, Amount 5.170% Senior Notes due 2027 Senior Notes Due 2027 [Member] Senior Notes Due 2027 Change in unrealized gains (losses) on securities with credit impairment, net of tax expense (benefit) of: $1 and $(1), for the three months ended June 30, 2026 and 2025, respectively, and $1 and $(1), for the six months ended June 30, 2026 and 2025, respectively. OCI, Debt Securities, Available-for-Sale, Impaired, Unrealized Holding Gain (Loss), After Adjustment And Tax OCI, Debt Securities, Available-for-Sale, Impaired, Unrealized Holding Gain (Loss), After Adjustment And Tax Credit Facility [Axis] Credit Facility [Axis] SRZ Swiss Reinsurance Company Ltd [Member] Swiss Reinsurance Company Ltd Total Assets, Fair Value Disclosure Name Measure Name Interest Expense Liability for Future Policy Benefit, Interest Expense Securities intended/required to be sold before recovery of amortized cost basis Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Sell before Recovery Pay vs Performance Disclosure [Line Items] Balance adjusted for variances from expectation Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Securities Collateral Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral Upgrade, Collateral, Right to Reclaim Security Not Offset Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral Upgrade, Collateral, Right to Reclaim Security Not Offset Equity securities Proceeds from Sale of Equity Securities, FV-NI Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward] Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward] Schedule of Reserves for Future Policy Benefits and Claims Payable Balances Schedule of Liability for Future Policy Benefits, by Product Segment [Table Text Block] Additional Paid-In Capital Additional Paid-in Capital [Member] Collateral payable for derivative instruments Obligation to Return Securities Received as Collateral Name Trading Arrangement, Individual Name Greater than 1.20x Debt Service Coverage Ratio, Greater Than 1.20X [Member] Debt Service Coverage Ratio, Greater Than 1.20X Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Market Risk Benefit [Line Items] Market Risk Benefit [Line Items] Purchases of: Payments to Acquire Investments [Abstract] Effect of actual policyholder behavior different from expected Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected Effect of actual variances from expected experience Effect of actual variances from expected experience Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Investment performance Separate Account, Liability, Increase (Decrease) from Invested Performance Company Selected Measure Amount Company Selected Measure Amount Schedule of Reconciliation of Segment Pretax Adjusted Operating Earnings to Net Income Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Total return swaps Total Return Swap [Member] 1.00x - 1.20x Debt Service Coverage Ratio, 1.00X To 1.20X [Member] Debt Service Coverage Ratio, 1.00X To 1.20X Gross Amounts Recognized Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset Public utilities Public utilities Public Utilities [Member] Share-based compensation programs (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Agreement-Backed Commercial Paper Program Agreement-Backed Commercial Paper Program [Member] Agreement-Backed Commercial Paper Program Non-PEO NEO Non-PEO NEO [Member] B and below NRSRO, B And Below Rating [Member] NRSRO, B And Below Rating Transfers in and/or (out of ) Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Award Timing Method Award Timing Method [Text Block] Other product lines Other Product Lines Product and Service, Other [Member] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Greater Than 150 Basis Points Above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater [Member] Annuity reserves Liability For Future Policy Benefits, Annuity Reserves Liability For Future Policy Benefits, Annuity Reserves Funding agreements Funding Agreement Funding Agreement Accrued interest receivable on debt securities Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Due after 1 year through 5 years Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, After Year One Through Year Five Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, After Year One Through Year Five Net income (loss) attributable to Jackson Financial Inc. Net income (loss) attributable to Jackson Financial Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Market Risk Benefit [Roll Forward] Market Risk Benefit [Roll Forward] Schedule of Changes in Accumulated Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Policy loans (including $3,617 and $3,537 at fair value under the fair value option at June 30, 2026 and December 31, 2025, respectively) Policy loans Loans, Gross, Insurance Policy Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Percent of Total Debt Securities Carrying Value Debt Securities, Percentage Debt Securities, Percentage Real estate, foreclosed properties Real Estate, Foreclosed Properties [Member] Real Estate, Foreclosed Properties Gross Amounts Offset in the Condensed Consolidated Balance Sheets Security Loaned, Subject to Master Netting Arrangement, Asset Offset Closed Block Life Closed Block Life Closed Block Life [Member] Closed Block Life Net gains (losses) on non-derivative investments Nonoperating Gains (Losses), Non-Derivative Instruments Nonoperating Gains (Losses), Non-Derivative Instruments Securities loaned, minimum percent of fair value required as collateral Securities Loaned, Minimum Fair Value Collateral Percent Securities Loaned, Minimum Fair Value Collateral Percent Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Revenues Operating Revenues Revenues [Abstract] Repurchase agreements and securities lending payable Securities Sold Under Agreements To Repurchase And Securities Loaned Securities Sold Under Agreements To Repurchase And Securities Loaned Depositary Shares Depositary Shares [Member] Depositary Shares Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Investment management arrangement, term Investment Management Arrangement, Term Investment Management Arrangement, Term A NRSRO, A Rating [Member] NRSRO, A Rating Asset-based commission expenses Asset-based commission expenses Asset-Based Commission Expense Asset-Based Commission Expense Change in net unrealized gains (losses) on securities not impaired, tax expense OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Statistical Measurement [Domain] Statistical Measurement [Domain] Policyholder Account Balance [Line Items] Policyholder Account Balance [Line Items] Weighted average current discount rate Additional Liability, Long-Duration Insurance, Current Weighted-Average Discount Rate Document Fiscal Year Focus Document Fiscal Year Focus Gross Amounts Offset in the Condensed Consolidated Balance Sheets Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Total net gains (losses) on derivatives and investments Nonoperating Gains (Losses) Amortized Cost Debt Securities, Maturity, Allocated And Single Maturity Date, Amortized Cost [Abstract] Debt Securities, Maturity, Allocated And Single Maturity Date, Amortized Cost Effect of changes in assumptions Market Risk Benefit, Increase (Decrease) from Changes In Assumptions Market Risk Benefit, Increase (Decrease) from Changes In Assumptions FABN funding agreements FABN Funding Agreements [Member] FABN Funding Agreements 1.51%-2.50% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0151 To 0250 [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0151 To 0250 Common stock; 1,000,000,000 shares authorized, $0.01 par value per share and 68,185,286 and 66,825,632 shares issued and outstanding at June 30, 2026 and December 31, 2025, respectively (see Note 19) Common Stock, Value, Issued Interest expense Gross interest expense Interest Expense, Operating and Nonoperating Embedded derivative liabilities Embedded Derivative, Fair Value of Embedded Derivative Liability Debt Securities, at fair value under fair value option Fair value option, debt securities Debt Securities, Fair Value Option Debt Securities, Fair Value Option Line of Credit Line of Credit [Member] Schedule of Operating Costs and Other Expenses Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Restatement Determination Date Restatement Determination Date Funds withheld payable under reinsurance treaties Funds Held Under Reinsurance Agreements, Liability, Excluding At Fair Value Under Fair Value Option Funds Held Under Reinsurance Agreements, Liability, Excluding At Fair Value Under Fair Value Option Beginning of period cumulative effect of changes in discount rate assumptions End of period cumulative effect of changes in discount rate assumptions AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax Gross Premiums Liability For Future Policy Benefit (Expense), Gross Premium Income Liability For Future Policy Benefit (Expense), Gross Premium Income Amendment Flag Amendment Flag Number of pricing methods Debt And Equity Securities, Number Of Pricing Methods Debt And Equity Securities, Number Of Pricing Methods Percent of total debt securities carrying value Debt and Equity Securities, FV-NI [Line Items] Schedule of Gains and Losses on Funds Withheld Reinsurance Treaties Schedule Of Gains And Losses On Funds Withheld Reinsurance Treaties [Table Text Block] Schedule Of Gains And Losses On Funds Withheld Reinsurance Treaties Reserves: Funds Held under Reinsurance Agreements, Asset [Abstract] Funds Held under Reinsurance Agreements, Asset Change in non-performance risk on market risk benefits, net of tax expense (benefit) of $(14) and $(58), for the three months ended June 30, 2026 and 2025, respectively, and $58 and $13, for the six months ended June 30, 2026 and 2025, respectively. OCI, Market Risk Benefit, Instrument-Specific Credit Risk, Gain (Loss), after Adjustments and Tax Total net investment income Net investment income Net investment income Net Investment Income 2027 Surplus Notes Surplus Notes Due 2027 [Member] Surplus Notes Due 2027 Largest unrealized loss to a single corporate obligor Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Investments Investment [Text Block] Beginning balance at original discount rate (including DPL of $110, nil and $546 in June 30, 2026, and $91, nil and $588 in December 31, 2025 for payout annuities, closed block life and closed block annuity, respectively) Ending balance of original discount rate (including DPL of $105, nil and $523 in June 30, 2026, and $110, nil and $546 in December 31, 2025 for payout annuities, closed block life and closed block annuity, respectively) Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and 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Investments [Abstract] Interest Income on Non-accrual Loans Financing Receivable, Nonaccrual, Interest Income FHLBI bank loans due 2034 & 2035 FHLBI Bank Loans [Member] FHLBI Bank Loans Commercial paper Commercial Paper Life Life Insurance Product Line [Member] Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Dividends on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Class of Stock [Axis] Class of Stock [Axis] Schedule of Long Term and Short Term Debt Instruments [Table] Schedule of Long Term and Short Term Debt Instruments [Table] Schedule of Long Term and Short Term Debt Instruments Net income (loss) attributable to Jackson Financial Inc. common shareholders, Basic Net Income (Loss) Available to Common Stockholders, Basic Change in current discount rate - reserve for future policy benefits OCI, Liability for Future Policy Benefit, Gain (Loss), after Reclassification Adjustment, before Tax Beginning balance, including deferred profit liability Ending balance, including deferred profit liability Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability Liability For Future Policy Benefit, Before Reinsurance, Deferred Profit Liability Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Dividends on preferred stock Dividends, Preferred Stock Mortgage loans Total with ACL Aggregate contractual principal Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Number of retro treaties Number Of Retro Treaties Number Of Retro Treaties Investment expenses Other investment expenses on funds withheld assets Investment Income, Investment Expense Corporate securities, utilities Corporate Debt Securities, Utilities [Member] Corporate Debt Securities, Utilities New Accounting Pronouncements – Issued 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carrying value Total debt Total Long-Term Debt Schedule of Policyholder Account Balance, Guaranteed Minimum Crediting Rate Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table Text Block] Year three Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Subprime Subprime [Member] Change in: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Other Product Lines Other Product Lines Separate Account, Other [Member] Separate Account, Other Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Residential Mortgage Residential Residential Real Estate [Member] Gross Amounts Not Offset in the Condensed 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OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table] Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table] Total net hedging results Net Hedging Results Net Hedging Results Effect of fund performance Market Risk Benefit, Increase (Decrease) from Fund Performance Market Risk Benefit, Increase (Decrease) from Fund Performance Residential mortgage loans Residential Mortgage [Member] Debt Securities Debt Securities [Member] Asset Class [Domain] Asset Class [Domain] Schedule of Debt Securities in Continuous Unrealized Loss Position Schedule Of Debt Securities In Continuous Unrealized Loss Position [Table Text Block] Schedule Of Debt Securities In Continuous Unrealized Loss Position Non-income producing properties Non-Income Producing Properties [Member] Non-Income Producing Properties Compensation Amount Outstanding Recovery Compensation Amount Individual: 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[Text Block] Unconsolidated VIEs, exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Debt securities, rated by investment advisor Debt Securities, Rated Debt Securities, Rated Accrued investment income Accrued Investment Income Receivable Gross Premiums Liability for Future Policy Benefit, Gross Premium Income Treasury Stock at Cost Treasury Stock Treasury Stock, Common [Member] Total, fair value Debt Securities, Unrealized Loss Position Debt Securities, Unrealized Loss Position Share repurchase program Share Repurchase Program [Member] Share Repurchase Program Organization, Consolidation and Presentation of Financial Statements [Abstract] Commercial mortgage loans Commercial Loan [Member] Contractual/Notional Amount Derivative Asset, Notional Amount Schedule of Fair Value Option Fair Value Option, Disclosures [Table Text Block] Net MRB balance, end of period, net of reinsurance Market Risk Benefit, after Reinsurance and Cumulative 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Maturity, Allocated And Single Maturity Date, After Year One Through Year Five Debt Securities, Accumulated Gross Unrealized Loss, Before Tax, Maturity, Allocated And Single Maturity Date, After Year One Through Year Five Reinsurance recoverable, net of allowance for credit losses of $31 and $30 at June 30, 2026 and December 31, 2025, respectively Reinsurance recoverable on market risk benefits Total Reinsurance Recoverables, Including Reinsurance Premium Paid Separate account liabilities Separate account liabilities Balance as of beginning of period Balance as of end of period, gross Separate Account, Liability Other Commitments [Domain] Other Commitments [Domain] City Area Code City Area Code Document Information [Table] Document Information [Table] Due after 20 years Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Twenty Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Twenty Subsequent Events Subsequent Events [Text Block] Long-term Equity Volatility Measurement Input, Price Volatility [Member] Debt Debt Debt Instrument, Fair Value Disclosure Other Other Property [Member] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity [Domain] Entity [Domain] Repurchase agreements Assets Sold under Agreements to Repurchase, Repurchase Liability Net transfers from (to) separate accounts Transfers From (To) Separate Accounts Transfers From (To) Separate Accounts Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Policyholder Account Balance [Table] Policyholder Account Balance [Table] Change in unrealized gains (losses) of investments OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Range of Guaranteed Minimum Crediting Rate Policyholder Account Balance, Guaranteed Minimum Credit Rating Debt securities Proceeds From Sale And Maturity Of Debt Securities Proceeds From Sale And Maturity Of Debt Securities Amortization of DAC related to non-operating revenues and expenses Amortization Of DAC And DSI Related To Non Operating Revenues And Expenses Amortization Of DAC And DSI Related To Non Operating Revenues And Expenses Reserves for future policy benefits, after reinsurance recoverable Liability for Future Policy Benefit, after Reinsurance Nonoperating Gains (Losses) [Abstract] Nonoperating Gains (Losses) [Abstract] Measurement Basis [Axis] Measurement Basis [Axis] Gross Amounts Offset in the Condensed Consolidated Balance Sheets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Total investments Investments Subsequent Event Type [Domain] Subsequent Event Type [Domain] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Net unrealized gain (loss) AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Trust account assets Asset, Held-in-Trust Market risk benefit assets Market Risk Benefits, Asset Amount [Member] Market Risk Benefits, Asset Amount Schedule of Quantitative Information on Significant Internally-Priced Level 3 Assets and Liabilities Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Liabilities Liabilities, Fair Value Disclosure [Abstract] Contributions from partners of consolidated investments Proceeds from Contributions from Affiliates Net transfers from (to) separate accounts Transfer to (from) Policyholder Account Balance (to) from Separate Account Change in current discount rate related to reserve for future policy benefits, net of tax expense (benefit) of $(3) and $(7), for the three months ended June 30, 2026 and 2025, respectively, and $13 and $(23), for the six months ended June 30, 2026 and 2025, respectively. OCI, Liability for Future Policy Benefit, Gain (Loss), after Reclassification Adjustment and Tax Due in 1 year or less Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, Year One Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, Year One Less than 12 months, gross unrealized losses Debt Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Accumulated Loss Debt Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Accumulated Loss Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Extension of term Financing Receivable, Modified, Weighted-Average Term Increase from Modification Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Schedule of Changes in Number of Shares of Common Stock Outstanding Schedule of Stockholders Equity [Table Text Block] Net Investment Income [Line Items] Net Investment Income [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] Additions from purchase of PCD mortgage loans Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration Year five Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Other income Other income (loss) Other Income Freestanding derivative instruments Fair Value Net Amounts Presented in the Condensed Consolidated Balance Sheets Freestanding derivative instruments Derivative Asset Call/dividend rate reset period Preferred Stock, Call Period Preferred Stock, Call Period Underlying Securities Award Underlying Securities Amount Less: Comprehensive income (loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Fair 
Value Fair Value Estimate of Fair Value Measurement [Member] 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 Cash and cash equivalents Cash Effect of actual variances from expected experience Additional Liability, Long-Duration Insurance, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Gross Unrealized Gains Debt Securities, Maturity, Allocated and Single Maturity Date, Gross Unrealized Gains [Abstract] Debt Securities, Maturity, Allocated and Single Maturity Date, Gross Unrealized Gains Separate Account, Liability [Line Items] Separate Account, Liability [Line Items] Reductions from charge-offs Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Preferred Stock Preferred Stock [Member] Other investing activities Payment for (Proceeds from) Other Investing Activity Investment performance / change in value of equity option Policyholder Account Balance, Increase (Decrease) from Other Change Fair Value Debt Securities, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Debt Securities, Maturity, Allocated and Single Maturity Date, Fair Value Segment Reporting [Table] Segment Reporting [Table] Due after 5 years through 10 years Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year Five Through Ten Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year Five Through Ten Modified loans, unfunded commitment Amortized Cost Basis Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Fair Value, beginning of period Fair Value, end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Interest credited on other contract holder funds, gross Interest Credited to Policy Owner Account Mortality, expense and surrender charges Mortality Expense And Surrender Charges Mortality Expense And Surrender Charges Current Fiscal Year End Date Current Fiscal Year End Date Current discount rate Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 0.00%-1.50% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0150 [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0150 Due after 1 year through 5 years Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year One Through Five Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year One Through Five Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Provision (release) Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Derivative [Line Items] Derivative [Line Items] Due after 20 years Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year Twenty Debt Securities, Allowance For Credit Loss, Maturity, Allocated And Single Maturity Date, After Year Twenty Greater than 2.50% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater Than 0250 [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater Than 0250 Shares repurchased under repurchase program (in shares) Stock Repurchased During Period, Shares Funds withheld payable under reinsurance treaties, fair value under fair value option Funds Held Under Reinsurance Agreements, Fair Value Option Funds Held Under Reinsurance Agreements, Fair Value Option 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] Common stock dividends paid per share (in usd per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Office Office Building [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Preferred stock dividends paid per share (in usd per share) Preferred Stock, Dividends Per Share, Declared Measure: Measure [Axis] Schedule of Asset and Liability Information for Consolidated VIEs Schedule of Variable Interest Entities [Table Text Block] Schedule of Roll forward of the Separate Account Balance Separate Account, Liability [Table Text Block] Treasury stock (in shares) Beginning balance, Treasury Stock (in shares) Ending balance, Treasury Stock (in shares) Treasury Stock, Common, Shares Premiums Premiums Premiums Earned, Net Collateral upgrade transactions Securities Sold under Agreements to Repurchase, Collateral Upgrade [Member] Securities Sold under Agreements to Repurchase, Collateral Upgrade Withdrawal Measurement Input, Withdrawal Rate [Member] Accumulated other comprehensive income, tax (benefit) AOCI Tax, Attributable to Parent Equity Components [Axis] Equity Components [Axis] Funds withheld payable under reinsurance treaties (including $3,806 and $3,723 at fair value under the fair value option at June 30, 2026 and December 31, 2025, respectively) Funds withheld payable under reinsurance treaties Total liabilities Funds Held under Reinsurance Agreements, Liability Related Party Related Party [Member] Income taxes paid (received) Income Tax Paid, after Refund Received Deferred tax assets valuation allowance Deferred Tax Assets, Valuation Allowance Separate Account Asset Category [Domain] Separate Account Asset Category [Domain] Entity Interactive Data Current Entity Interactive Data Current Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Less: Net income (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Derivative assets, held collateral Derivative Asset, Fair Value of Collateral Without single maturity Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, Without Single Maturity Date Debt Securities, Fair Value, Maturity, Allocated And Single Maturity Date, Without Single Maturity Date Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Entity Small Business Entity Small Business Closed Life and Annuity Blocks Closed Life and Annuity Blocks Closed Life And Annuity Blocks Segment [Member] Closed Life And Annuity Blocks Segment Comprehensive income (loss) attributable to Jackson Financial Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Separate Accounts Disclosure [Abstract] Debt securities Payments To Acquire Debt Securities Payments To Acquire Debt Securities Interest accrual Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense Document Type Document Type Investment management arrangement, automatic renewal, permissible period Investment Management Arrangement, Automatic Renewal, Permissible Period Investment Management Arrangement, Automatic Renewal, Permissible Period Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Unobservable Inputs Unobservable Inputs [Member] Unobservable Inputs FHLBI capital stock, stock price (in usd per share) Federal Home Loan Bank Capital Stock Share Price Federal Home Loan Bank Capital Stock Share Price Equity Separate Account, Equity Security [Member] Debt securities, available for sale, allowance for credit losses Beginning Balance Ending Balance Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Included in OCI Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), OCI Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Issuance of debt of consolidated investment entities Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Derivative Investments, Excluding Non-Qualified Voluntary Deferred Compensation Derivative Investments, Excluding Non-Qualified Voluntary Deferred Compensation [Member] Derivative Investments, Excluding Non-Qualified Voluntary Deferred Compensation Recorded investment Financing Receivable, Impaired, Recorded Investment Financing Receivable, Impaired, Recorded Investment Total benefits and expenses Pretax adjusted operating earnings Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Commitments, Contingencies, and Guarantees (see Note 16) Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Income Tax Contingency [Table] Income Tax Contingency [Table] Account values with crediting rates Policyholder Account Balance Executive Category: Executive Category [Axis] Deposits Policyholder Account Balance, Issuance Tax expense (benefit) recorded to other comprehensive income Other Comprehensive Income (Loss), Tax Counterparty Name [Axis] Counterparty Name [Axis] Liabilities and Equity Liabilities and Equity [Abstract] Other Commitments [Table] Other Commitments [Table] Reserves Funds Held under Reinsurance Agreements, Asset Reinsurance Reinsurance [Text Block] Mortgage loans Mortgage loans, at fair value under the fair value option Financing Receivable, Fair Value Option [Member] Financing Receivable, Fair Value Option Other items Other Segment Reconciling Items, Net Income (Loss) Other Segment Reconciling Items, Net Income (Loss) Additional Liability, Long-Duration Insurance [Roll Forward] Additional Liability, Long-Duration Insurance [Roll Forward] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Balance, beginning of period Balance, end of period Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Below investment grade Below investment grade securities External Credit Rating, Noninvestment Grade [Member] PEO Name PEO Name Assets Reinsurance Assets [Abstract] Within 90 days after the occurrence of a regulatory capital event Redemption Period Two [Member] Redemption Period Two Debt securities in an unrealized loss position, percentage Debt Securities In Unrealized Loss Position, Percentage Debt Securities In Unrealized Loss Position, Percentage Securities on deposit with regulatory authorities Securities Reserve Deposit Required and Made Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Pre-capitalized trust securities and debt issuance costs Payments Of Pre-Capitalized Trust Securities And Debt Issuance Costs Payments Of Pre-Capitalized Trust Securities And Debt Issuance Costs Ratio of indebtedness to net capital Ratio of Indebtedness to Net Capital Current Financial Asset, Not Past Due [Member] Warehouse Warehouse [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Other Commitments [Line Items] Other Commitments [Line Items] Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral Upgrade, Deduction of Financial Instrument Not Offset Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral Upgrade, Deduction of Financial Instrument Not Offset Less than 70% Debt-To-Value Ratio, Less Than 70 Percent [Member] Debt-To-Value Ratio, Less Than 70 Percent Line of credit facility, option to extend, period (up to) Line Of Credit Facility, Option To Extend, Period Line Of Credit Facility, Option To Extend, Period Fair Value Debt securities Fair Value Debt securities Debt Securities Debt securities, at fair value under the fair value option Debt Securities, Fair Value Option [Member] Debt Securities, Fair Value Option Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accident and health Accident and Health Insurance Product Line [Member] Athene Athene Life Re Ltd [Member] Athene Life Re Ltd Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Investment grade Investment grade securities External Credit Rating, Investment Grade [Member] Corporate debt securities, financial services Corporate Debt Securities, Financial Services [Member] Corporate Debt Securities, Financial Services TPG Inc. common stock acquired Stock Acquired Stock Acquired Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Derivative instrument, deferred option premiums Derivative Instrument, Deferred Option Premiums Derivative Instrument, Deferred Option Premiums Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Purchases, Sales, Issuances and Settlements Total Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements) Collateral upgrade transactions Gross Amounts Recognized Security Sold under Agreement to Repurchase, Collateral Upgrade, Subject to Master Netting Arrangement, before Offset Security Sold under Agreement to Repurchase, Collateral Upgrade, Subject to Master Netting Arrangement, before Offset Net losses (gains) on funds withheld reinsurance treaties Net gains (losses) on funds withheld payable under reinsurance treaties Net Gains (Losses) On Funds Withheld Payable Under Reinsurance Treaties Net Gains (Losses) On Funds Withheld Payable Under Reinsurance Treaties Fee percentage Debt Instrument, Fee Percentage Debt Instrument, Fee Percentage Account values with crediting rates Total other contract holder funds Balance as of beginning of year Balance as of ending of year Other Policyholder Funds, Gross Other Policyholder Funds, Gross Cash surrender value Policyholder Account Balance, Cash Surrender Value Fair value option, market risk benefit, debt securities Debts Securities, Market Risk Benefits, Fair Value Option Debts Securities, Market Risk Benefits, Fair Value Option Net Amount Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Basic (in usd per share) Earnings Per Share, Basic Total Operating Benefits and Expenses Total operating benefits and expenses Benefits, Losses and Expenses, Operating Benefits, Losses and Expenses, Operating Measurement Input Type [Axis] Measurement Input Type [Axis] Other product lines, end of period Present Value of Future Insurance Profits, Net Insider Trading Arrangements [Line Items] Schedule of Share Repurchase Activities Class of Treasury Stock [Table Text Block] Greater than 100% Debt-To-Value Ratio, Greater Than 100 Percent [Member] Debt-To-Value Ratio, Greater Than 100 Percent Effect of changes in cash flow assumptions Additional Liability, Increase (Decrease) from Cash Flow Assumption Additional Liability, Increase (Decrease) from Cash Flow Assumption Amortization Deferred Policy Acquisition Costs, Amortization Expense Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Policy charges and other Policyholder Account Balance, Policy Income (Charge) Policyholder Account Balance, Policy Income (Charge) Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Derivatives related to non-qualified voluntary deferred compensation plan Derivatives Related To Non-Qualified Voluntary Deferred Compensation [Member] Derivatives Related To Non-Qualified Voluntary Deferred Compensation Preferred Stock, Redemption Period [Axis] Preferred Stock, Redemption Period [Axis] Preferred Stock, Redemption Period Without single maturity Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, Without Single Maturity Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, Without Single Maturity Insurance [Abstract] Fractional interest Sale of Stock, Number of Shares Issued in Transaction, Fractional Value Sale of Stock, Number of Shares Issued in Transaction, Fractional Value Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Effect of changes in cash flow assumptions Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change Fair value option, assets carrying amount Fair Value, Option, Assets, Carrying Amount Fair Value, Option, Assets, Carrying Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Other government securities Other government securities Other Government Debt Securities [Member] Other Government Debt Securities 2036 Senior Notes Senior Notes Due 2036 [Member] Senior Notes Due 2036 Fixed Annuity Fixed Annuities Fixed Annuity [Member] RILA Registered Index Linked Annuity (RILA) [Member] Registered Index Linked Annuity (RILA) Interest accrual Interest Expense Additional Liability, Long-Duration Insurance, Interest Income (Expense) Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Alt-A Alt-A [Member] Alt-A Balanced Separate Account, Balanced [Member] Separate Account, Balanced Net proceeds received Proceeds from Issuance of Preferred Stock and Preference Stock Cumulative effect of changes in shadow adjustments Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For The Changes In Shadow Adjustments [Member] Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For The Changes In Shadow Adjustments [Member] Due after 5 years through 10 years Debt Securities, Accumulated Gross Unrealized Loss, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Five Through Year Ten Debt Securities, Accumulated Gross Unrealized Loss, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Five Through Year Ten Reserves for Future Policy Benefits and Claims Payable Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Total Shareholders' Equity Parent [Member] Death, other policy benefits and change in policy reserves, net of deferrals Death, other policy benefits and change in policy reserves, net of deferrals Death, Other Policy Benefits And Change In Policy Reserves, Net Of Deferrals Death, Other Policy Benefits And Change In Policy Reserves, Net Of Deferrals Equity Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Effect of time Market Risk Benefit, Increase (Decrease) from Time Market Risk Benefit, Increase (Decrease) from Time Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] Weighted average duration (years) Additional Liability, Long-Duration Insurance, Weighted-Average Duration General and administrative expenses General and administrative expenses General and Administrative Expense Due after 20 years Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Twenty Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Twenty Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Commercial mortgage-backed Commercial mortgage-backed Commercial Mortgage-Backed Securities [Member] Net Amount Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, Collateral Upgrade, after Offset and Deduction Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, Collateral Upgrade, after Offset and Deduction Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock [Domain] Class of Stock [Domain] Statement of Cash Flows [Abstract] Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Unfunded commitments Other Commitment Market risk benefits (gains) losses, net Net (gain) loss on market risk benefits Market risk benefits gains (losses), net Market Risk Benefit, Change in Fair Value, Gain (Loss) Aggregate Available Trading Arrangement, Securities Aggregate Available Amount 3.125% Senior Notes due 2031 Senior Notes Due 2031 [Member] Senior Notes Due 2031 Income Taxes Income Tax Disclosure [Text Block] Change in unrealized gains (losses) on securities for which an allowance for credit losses has been recorded, tax expense (benefit) OCI, Debt Securities, Available-for-Sale, Impaired, Unrealized Holding Gain (Loss), after Adjustment, Tax OCI, Debt Securities, Available-for-Sale, Impaired, Unrealized Holding Gain (Loss), after Adjustment, Tax Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Debt Securities, Available-for-sale, Allowance for Credit Loss [Table] Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table] Entity Filer Category Entity Filer Category Schedule of Residential Mortgage-Backed Securities Schedule Of Residential Mortgage Backed Securities [Table Text Block] Schedule Of Residential Mortgage Backed Securities Revision of Prior Period [Axis] Revision of Prior Period [Axis] Schedule of Gross and Net Information About Financial Instruments Subject to Master Netting Arrangements - Liabilities Offsetting Liabilities [Table Text Block] Due after 5 years through 10 years Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Five Through Ten Debt Securities, Amortized Cost, Maturity, Allocated And Single Maturity Date, After Year Five Through Ten Net gains (losses) on derivative instruments Embedded derivative gain (loss) Gain (Loss) on Derivative Instruments, Net, Pretax Deposits Additions to Contract Holders Funds Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Investments, Debt and Equity Securities [Abstract] Net investment income: Net Investment Income [Abstract] Gross Amounts Offset in the Condensed Consolidated Balance Sheets Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset Registered index linked annuity embedded derivatives RILA embedded derivatives Registered Index Linked Annuity (RILA) Derivative [Member] Registered Index Linked Annuity (RILA) Derivative Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income (loss) Net income (loss) Reclassifications, net of income taxes Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Freestanding derivative instruments Fair Value Net Amounts Presented in the Condensed Consolidated Balance Sheets Freestanding derivative instruments Derivative Liability 5.670% Senior Notes due 2032 Senior Notes Due 2032 [Member] Senior Notes Due 2032 Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income tax expense (benefit) Income Tax Expense (Benefit) Credit loss income (expense) on mortgage loans Financing Receivable, Credit Loss, Expense (Reversal) And Other (Gain) Loss Financing Receivable, Credit Loss, Expense (Reversal) And Other (Gain) Loss Coinsurance percentage Coinsurance Percentage Coinsurance Percentage Accrued interest written off Debt Securities, Available-for-Sale, Accrued Interest, Allowance for Credit Loss, Writeoff Debt Securities, Available-for-Sale, Accrued Interest, Allowance for Credit Loss, Writeoff Effect of changes in equity index volatility Market Risk Benefit, Increase (Decrease) from Equity Market Change Balance, beginning of period Balance, end of period Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change Consolidation Consolidation, Policy [Policy Text Block] Offsetting Derivative Liabilities [Abstract] Offsetting Derivative Liabilities [Abstract] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] Segment Reconciling Items Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Future policy benefits Increase Decrease In Future Policy Benefits Increase Decrease In Future Policy Benefits Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Gross Amounts Recognized Derivative Asset, Subject to Master Netting Arrangement, before Offset Expected future gross premiums, discounted Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance Net gains (losses) on derivatives and investments: Gain (Loss) On Derivative Instruments And Investments, Net [Abstract] Gain (Loss) On Derivative Instruments And Investments, Net Policyholder Account Balance [Roll Forward] Policyholder Account Balance [Roll Forward] Schedule of Balances of Level 3 Assets and Liabilities Measured at Fair Value with Corresponding Pricing Sources Disclosure Of Level 3 Assets And Liabilities Measured At Fair Value With Corresponding Pricing Sources [Table Text Block] Disclosure Of Level 3 Assets And Liabilities Measured At Fair Value With Corresponding Pricing Sources Due after 10 years through 20 years Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Ten Through Year Twenty Debt Securities, Accumulated Gross Unrealized Gain, Before Tax, Maturity, Allocated And Single Maturity Date, After Year Ten Through Year Twenty Corporate debt securities, healthcare Corporate Debt Securities, Healthcare [Member] Corporate Debt Securities, Healthcare Derivative Instruments and Hedging Activities Disclosure [Abstract]