Beginning balance Ending balance Expected future benefit payments Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change Unrealized gains (losses) arising during the period: OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax [Abstract] Net investment income Net Investment Income [Member] Net Investment Income [Member] West North Central West North Central [Member] West North Central [Member] Schedule of Amortized Cost, Gross Unrealized Gains (Losses), Allowance for Credit Losses and Fair Value of Our Fixed Maturity Securities Classified as Available-For-Sale Debt Securities, Available-for-Sale [Table Text Block] Change in the discount rate used to measure future policy benefits, current period OCI, tax OCI, Liability for Future Policy Benefit, Gain (Loss), after Reclassification Adjustment, Tax Total net realized investment gains (losses) Realized Investment Gains (Losses) Balances before noncontrolling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Excluding Current Period Increase (Decrease) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Excluding Current Period Increase (Decrease) Liability for future policy benefit cumulative increase (decrease) of actual variance from expected experience Liability for Future Policy Benefit Cumulative Increase (Decrease) of Actual Variance from Expected Experience Net amount of cumulative increase (decrease) in expected net premium component and expected future policy benefit and expense component for liability of future policy benefit from effect of variance from cash flow assumption change for actual experience. Award Timing Predetermined Award Timing Predetermined [Flag] Debt Service Coverage Ratio [Axis] Debt Service Coverage Ratio [Axis] Debt Service Coverage Ratio Entity File Number Entity File Number Other Other Industries [Member] Other Industries [Member] Additional paid-in capital Additional Paid-in Capital [Member] Reclassification adjustments to net investment (gains) losses Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Tabular List, Table Tabular List [Table Text Block] Private placement investments Commitments To Fund Private Placement Investments [Member] Commitments to Fund Private Placement Investments [Member] Gross amounts offset in the balance sheet, net derivatives Derivative, Subject to Master Netting Arrangement, Asset (Liability) Offset, Net Derivative, Subject to Master Netting Arrangement, Asset (Liability) Offset, Net Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Fair Value Financial Instruments Not Required to be Carried at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Less (income) loss from discontinued operations, net of taxes Loss From Discontinued Operations Net Of Tax Loss from discontinued operations net of tax. Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Interest accretion Market Risk Benefit, Interest Expense Due after ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Policyholder Account Balance [Roll Forward] Policyholder Account Balance [Roll Forward] Interest accretion Liability for Future Policy Benefit, Expected Net Premium, Interest Income Adjustment to Compensation, Amount Adjustment to Compensation Amount % of total Percentage of Recorded Investment Commercial Mortgage Loans This item represents the recorded investment of certain commercial mortgage loans as a percentage of the total recorded investment of commercial mortgage loans. Accrued investment income and other assets Increase (Decrease) in Other Operating Assets 1–50 basis points above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 [Member] Long-term incentive compensation expense Share-Based Payment Arrangement, Noncash Expense Schedule of Weighted Average Interest and Discount Rates Disclosure In Tabular Form Of Weighted Average Interest And Discount Rates For The Liability For Future Policy Benefits [Table Text Block] Disclosure in tabular form of weighted average interest and discount rates for the liability for future policy benefits. Infrastructure funds Limited Partnerships Infrastructure Funds [Member] Limited Partnerships Infrastructure Funds [Member] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Over collateralization, net derivatives Net Collateral From Counterparties On Derivative Instruments Over Collateralization Net amount of over collateralization related to collateral retained or posted from or to derivative counterparties. Current period increases (decreases) in fair value, deferred taxes Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Total Genworth Financial, Inc.’s stockholders’ equity Equity, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-Sale [Table] Other comprehensive income (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Limited partnerships accounted for under equity method of accounting Accounted For Under Equity method of Accounting [Member] Accounted For Under Equity method of Accounting [Member] Variable annuities Variable annuities Variable Annuity [Member] Withdrawals from universal life and investment contracts Repayments of Annuities and Investment Certificates Maturities/ terminations Notional Amount Of Derivatives, Terminations Terminations during period of notional amount of derivatives. Liabilities and equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Mountain Mountain [Member] Mountain [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Domain] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Domain] Effect of changes in discount rate assumptions AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax Less: net income (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Schedule of Additional Liability Long Duration Insurance Revenue and Interest Accretion (Expense) Recognized Additional Liability Long Duration Insurance Revenue and Interest Expense Recognized [Table Text Block] Additional liability long duration insurance revenue and interest expense recognized. Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Total (gains) losses included in net (income) attributable to liabilities still held, Included in net (income) Total (gains) losses included in net (income) loss attributable to liabilities still held: Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss) Universal Life Insurance and Investment Contracts Universal Life Insurance and Investment Contracts [Member] Universal life insurance and investment contracts. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other assets Other Assets [Member] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income (loss) from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company GMWB utilization rate Measurement Input, Utilization Rate [Member] Net liability for future policy benefits, net of reinsurance recoverable Liability for Future Policy Benefit, after Reinsurance Adjusted beginning balance Additional Liability, Long-Duration Insurance, Original Discount Rate, before Reinsurance, after Cash Flow Change Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Current period increases (decreases) in fair value Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Total gains (losses) included in OCI attributable to assets still held, Included in OCI Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI Less: comprehensive income (loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Income (loss) from continuing operations available to Genworth Financial, Inc.’s common stockholders Income (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Deferred Policy Acquisition Cost [Line Items] Deferred Policy Acquisition Cost [Line Items] Repurchase of subsidiary shares Payments to Noncontrolling Interests Document Fiscal Period Focus Document Fiscal Period Focus Intangible assets and goodwill Intangible Assets, Net (Including Goodwill) Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Basic (in usd per share) Basic per share (in usd per share) Income (Loss) from Continuing Operations, Per Basic Share Gross amounts not offset in the balance sheet: Gross Amounts Not Offset In The Balance Sheet [Abstract] Gross Amounts Not Offset In The Balance Sheet Award Type Award Type [Axis] Foreign currency translation and other adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Interest accretion Additional Liability, Long-Duration Insurance, Interest Income (Expense) Trading Symbol Trading Symbol Market risk benefit liabilities Liability Market Risk Benefit, Liability, Amount Entity Address, City or Town Entity Address, City or Town Technology and communications Technology and communications Technology Sector [Member] Projected crediting rate Additional Liability, Long-Duration Insurance, Current Weighted-Average Discount Rate Net unrealized gains (losses) on limited partnerships Limited Partnership FVNi Unrealized Gain Loss Amount of net unrealized gain (loss) recognized in the income statement on limited partnerships. Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Less: change in net unrealized investment gains (losses) attributable to noncontrolling interests Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Policy loans, net Payments for (Proceeds from) Policy Loans Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Axis] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Axis] Market Risk Benefit [Abstract] Market Risk Benefit [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Gross assessments Additional Liability, Long-Duration Insurance, Gross Premium Income Schedule of Gains and Losses Included in Net (Income) from Liabilities Measured at Fair Value Fair Value, Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] Tabular disclosure of the amount of gains or losses for the period included in earnings or resulted in a change to liabilities, have arisen from the use of significant unobservable inputs (level 3) to measure the fair value of liabilities classified in shareholders' equity. Policyholder Account Balance [Abstract] Policyholder Account Balance [Abstract] Collateral pledged Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 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 of market risk benefits AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent [Member] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Flooring adjustments Flooring Adjustments On Net Liability For Future Policy Benefits Flooring adjustments on net liability for future policy benefits. Undiscounted Liability for Future Policy Benefit, Undiscounted Activity [Abstract] Liability for Future Policy Benefit, Undiscounted Activity Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Insurance [Abstract] Insurance [Abstract] Expected future benefit payments Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Provision (benefit) for income taxes Provision (benefit) for income taxes Income Tax Expense (Benefit) Energy Energy [Member] Energy [Member] Basic per share (in usd per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Purchases and originations of investments: Payments to Acquire Investments [Abstract] Other assets Other Assets Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Interest credited Policyholder Account Balance, Interest Expense Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivatives designated as hedges Designated as Hedging Instrument [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Derivatives qualifying as hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Incurred related to insured events of: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Net unrealized investment gains (losses) attributable to Genworth Financial, Inc. Beginning balance Ending balance AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax Separate Account Asset Category [Axis] Separate Account Asset Category [Axis] Issuances Market Risk Benefit, Issuance Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Liability for Future Policy Benefit, after Reinsurance [Abstract] Liability for Future Policy Benefit, after Reinsurance [Abstract] Deferred Acquisition Costs Deferred Policy Acquisition Costs [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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 Net cash from (used by) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fixed maturity securities available-for-sale, at fair value Fair value Fair value Fixed maturity securities Debt Securities, Available-for-Sale, Excluding Accrued Interest Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Other invested assets: Other Investments [Abstract] Subsequent Event Subsequent Event [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Money market funds Money Market Funds [Member] Derivative liability, measurement input Derivative Liability, Measurement Input Separate Account Asset Category [Domain] Separate Account Asset Category [Domain] Gross amounts recognized, derivatives liabilities Derivative liabilities: Derivative liabilities, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Rolling Maturity [Abstract] Equity Components [Axis] Equity Components [Axis] Derivative, Notional Amount [Roll Forward] Derivative, Notional Amount [Roll Forward] Derivative, Notional Amount 2023 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Schedule of Balances of and Changes in Market Risk Benefits Market Risk Benefit, Activity [Table Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Income (loss) from continuing operations available to Genworth Financial, Inc.’s common stockholders per share: Income Loss Per Share From Continuing Operations [Abstract] Income Loss Per Share From Continuing Operations [Abstract] Reclassification adjustments to net investment (gains) losses, taxes Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Net amount at risk Policyholder Account Balance, Net Amount at Risk Number of reportable segments Number of reportable segments Number of Reportable Segments Schedule of Changes in Separate Account Liabilities Separate Account, Liability [Table Text Block] Ownership percentage of subsidiary Ownership Percentage of Subsidiary Ownership Percentage of Subsidiary. Pacific Pacific [Member] Pacific [Member] Benefits and other changes in policy reserves Policyholder Benefits and Claims Incurred, Net Beginning balance Additional Liability, Long-Duration Insurance, Original Discount Rate, before Cash Flow and Reinsurance Entity Address, State or Province Entity Address, State or Province Less: net unrealized investment gains (losses) attributable to noncontrolling interests Accumulated Other Comprehensive Income (Loss), Available for sale Securities Adjustment, Net of Tax, Portion Attributable To Noncontrolling Interest This item represents net unrealized investment gains (losses) attributable to noncontrolling interests. Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Internal models Internal Valuation Model [Member] Internal Valuation Model [Member] Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table] Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table] Fair value measurements Significant unobservable inputs [Table] Fair Value Measurements, Significant Unobservable Inputs [Table] Schedule of fair value measurements significant unobservable inputs. Trauernicht et al v. Genworth Financial Trauernicht et al v. Genworth Financial [Member] Trauernicht et al v. Genworth Financial Enact segment Enact Enact Segment [Member] Enact segment. Individual: Individual [Axis] Income Tax Authority [Domain] Income Tax Jurisdiction [Domain] Separate account assets Separate Account Asset Issuances Policyholder Account Balance, Issuance Fixed maturity securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayment and repurchase of long-term debt Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current 61% - 75% Sixty One Percent to Seventy Five Percent [Member] Sixty One Percent to Seventy Five Percent Mixed use Mixed Use [Member] Mixed Use [Member] Schedule of Significant Inputs Used by Third-Party Pricing Services for Certain Fair Value Measurements of Fixed Maturity Securities that Classified as Level 2 Fair Value Measurements Valuation Techniques And Significant Unobservable Inputs Level 2 Fixed Maturities Table [Text Block] Tabular disclosure of significant inputs used by third-party pricing services for fixed maturity securities measured at fair value that are classified as Level 2. Derecognition (lapses and withdrawals) Liability for Future Policy Benefit, Expected Net Premium, Derecognition Fixed indexed annuities Fixed annuities Fixed annuities Fixed Annuity [Member] Net amount, net derivatives Derivative, Fair Value, Amount Offset Against Collateral, Net Proceeds from sales of investments: Proceeds from Sale, Maturity and Collection of Investments [Abstract] Effect of changes in interest rates Market Risk Benefit, Increase (Decrease) from Interest Rate Change Policies Policies Measurement [Abstract] Policies Measurement Entity Central Index Key Entity Central Index Key Costs deferred Deferred Policy Acquisition Cost, Capitalization Fixed maturity and equity securities Payments To Acquire Debt And Equity Securities Amount of cash outflow to acquire investments in debt and equity securities measured at fair value. PEO Name PEO Name Total revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Foreign currency swaps Currency Swap [Member] Greater than 2.00 Greater Than Two [Member] Greater Than Two Schedule of Commercial Mortgage Loans by Credit Quality Indicator Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total incurred Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Financial instruments, net derivatives Derivative Fair Value Gross Amount Not Offset Financial Instruments Net Fair value of net derivative or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against an obligation to return collateral under a master netting arrangement. Office Office Building [Member] Schedule of Positions in Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Liability for future policy benefit cumulative increase (decrease) from cash flow change Liability for Future Policy Benefit Cumulative Increase (Decrease) from Cash Flow Change Net amount of cumulative increase (decrease) in expected net premium component and expected future policy benefit and expense component of liability for future policy benefit from cash flow assumption change for future cash flows. Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Life Insurance Line, Excluding Policies With Equity Market Component Life Insurance Line, Excluding Policies With Equity Market Component [Member] Life Insurance Line, Excluding Policies With Equity Market Component Statutory U.S. federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Cost of reinsurance Cost Of Reinsurance Liability Cost of reinsurance liability. Burkhart et al. v. Genworth Financial et al. Burkhart et al. v. Genworth Financial et al. [Member] Burkhart et al. v. Genworth Financial et al. Real estate owned Real Estate Acquired Through Foreclosure Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Debt-to-Value [Domain] Debt-to-Value [Domain] Net unrealized investment gains (losses) Accumulated Other Comprehensive Income (Loss), Available for sale Securities Adjustment, Net of Tax, Including Portion Attributable Noncontrolling Interest Accumulated appreciation or loss, net of tax, in value of the total of unsold securities at the end of an accounting period, including the portion attributable to noncontrolling interests. 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] Total benefits and expenses Benefits, Losses and Expenses Entity Address, Address Line One Entity Address, Address Line One Other asset-backed Other Asset Backed Securities [Member] Other asset-backed Accumulated other comprehensive income (loss) AOCI Attributable to Parent AOCI Attributable to Parent [Member] Schedule of Derivatives Reported in Accumulated Other Comprehensive Income (Loss) Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Investments [Domain] Investments [Domain] Less reinsurance recoverable Add reinsurance recoverable Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Benefit payments Separate Account, Liability, Benefit Payment Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Limited partnerships and other invested assets Proceeds from Sale and Maturity of Other Investments Industry Sector [Axis] Industry Sector [Axis] Net insurance recoveries Insurance Recoveries Other liabilities Other Liabilities [Member] Fair Value as of Grant Date Award Grant Date Fair Value Reclassification to net (income), deferred taxes Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Available for Sale Securities Continuous Unrealized Loss Position [Line Items] Available for Sale Securities Continuous Unrealized Loss Position [Line Items] Available for Sale Securities Continuous Unrealized Loss Position [Line Items] 2022 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Percentage of stockholders' equity by which no single issuer of fixed maturity securities exceeded Percentage Of Stockholders' Equity By Which No Single Issuer Of Fixed Maturity Securities Exceeded Percentage Of Stockholders' Equity By Which No Single Issuer Of Fixed Maturity Securities Exceeded Current discount rate Liability for Future Policy Benefit, Current Weighted-Average Discount Rate Limited partnerships accounted for at fair value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] 0% - 50% Zero Percent to Fifty Percent [Member] Zero Percent to Fifty Percent Schedule of Range Guaranteed Minimum Crediting Rate Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Financing Receivables 31 To 60 Days Past Due Financing Receivables 31 To 60 Days Past Due [Member] Financing Receivables 31 To 60 Days Past Due 20%-50% Below cost Twenty to Fifty Percent Below Cost [Member] 20-50% Below cost Schedule of Pre-Tax Income (Loss) Effects of Cash Flow Hedges Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Market Risk Benefit [Line Items] Market Risk Benefit [Line Items] Transportation Transportation [Member] Transportation Document Quarterly Report Document Quarterly Report Less than 12 months, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Derivative instruments, limited partnerships and other Increase Decrease In Derivative Instruments And Limited Partnerships and other The net change during the reporting period from the aggregate market value of equity or debt securities that are purchased and held principally for the purpose of selling them in the near future and limited partnerships and derivative instrument activity. Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Consumer—non-cyclical Consumer—non-cyclical Consumer Non Cyclical [Member] Consumer-non-cyclical Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Other Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change Accrued investment income Accrued Investment Income Receivable Liability for future policy benefit adverse development expenses Liability for Future Policy Benefit, Adverse Development, Expense Investment Type [Axis] Investment Type [Axis] Total investments Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Increase (decrease) from securities with allowance in previous periods Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal) Real estate funds Limited Partnerships Real Estate Funds [Member] Limited Partnerships Real Estate Funds [Member] Less than 1.00 Less Than One [Member] Less Than One Non-PEO NEO Non-PEO NEO [Member] Schedule of Liability for Policy and Contract Claims Schedule of Liability for Policy and Contract Claims by Product Segment [Table Text Block] Schedule of recorded liabilities for policy and contract claims by major product type. Short-term investments, net Payments for (Proceeds from) Short-Term Investments Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Net unrealized gains (losses) on securities without an allowance for credit losses Net Unrealized Gains Losses On Securities Without An Allowance For Credit Losses Net Unrealized Gains losses On Securities Without An Allowance For Credit Losses Gross unrealized gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Schedule of Derivative Assets Subject to Master Netting Arrangement Offsetting Assets [Table Text Block] All Award Types Award Type [Domain] Policyholder account balances: Policyholder account balances, fair value Embedded Derivative, Fair Value of Embedded Derivative Liability Forward Starting Swaps Forward Starting Swaps [Member] Forward starting swaps. Cash surrender value Separate Account, Liability, Cash Surrender Value, Amount Gain (loss) recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Noncontrolling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] Accumulated Other Comprehensive Income (Loss), Net of Tax Compensation Amount Outstanding Recovery Compensation Amount Derivative liabilities: Derivative Financial Instruments, Liabilities [Member] Schedule of Changes in Liability for Policy and Contract Claims Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Foreign currency forward contracts Foreign Exchange Contract [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair value Estimate of Fair Value Measurement [Member] Adjusted beginning balance Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change Policyholder account balances: Policyholder Account Balances [Member] Policyholder Account Balances [Member] Schedule of Investments [Line Items] Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Weighted-average attained age of contractholders Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age Schedule of Revenue and Interest Expense in Respect of Future Policy Benefits Disclosure In Tabular Form Of Revenue And Interest Expense In Respect Of Future Policy Benefits [Table Text Block] Disclosure in tabular form of revenue and interest expense in respect of future policy benefits. Revenues: Revenues [Abstract] 51–150 basis points above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 [Member] Schedule of Liability for Future Policy Benefit Activity Liability for Future Policy Benefit, Activity [Table Text Block] Financial instruments, derivative liabilities Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset 12 months or more, Number of securities in a continuous loss position 12 months or more, Number of securities in a continuous loss position Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Financial Instruments [Domain] Financial Instruments [Domain] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Total realized and unrealized (gains) losses, Included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] Net Investment Income [Line Items] Net Investment Income [Line Items] Reclassification to net (income) loss Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Minimum Minimum [Member] Net amount, derivatives assets Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Adjusted beginning balance Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change Company Selected Measure Name Company Selected Measure Name Actual policyholder behavior different from expected behavior Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected Fair Value Measurement [Domain] Fair Value Measurement [Domain] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Effect of actual variances from expected experience Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Change in the discount rate used to measure future policy benefits AOCI, Liability for Future Policy Benefit, Parent [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Present value of expected future policy benefits: Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward] Net amounts presented in the balance sheet, net derivatives Derivative Assets (Liabilities), at Fair Value, Net Diluted (in shares) Weighted-average common shares used in diluted earnings (loss) per share calculations (in shares) Weighted Average Number of Shares Outstanding, Diluted Less Than 20% Below cost Less Than Twenty Percent Below Cost [Member] Less Than Twenty Percent Below Cost Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Liability for Future Policy Benefit, Activity [Line Items] Liability for Future Policy Benefit, Activity [Line Items] Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Document Transition Report Document Transition Report Surrenders and withdrawals Separate Account, Liability, Surrender and Withdrawal Underlying Securities Award Underlying Securities Amount Realized gains Debt Securities, Available-for-Sale, Realized Gain Long-duration insurance contracts Long Duration Insurance Contracts [Member] Long duration insurance contracts. Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Effect of changes in cash flow assumptions Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change Gain on reinsurance recapture Gain Loss On Reinsurance Recapture Gain Loss On Reinsurance Recapture Income Taxes Income Tax Disclosure [Text Block] Interest accretion Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense Loan to Value Ratio Loan To Value Ratio [Member] Loan To Value Ratio [Member] Net premium ratio capped (as percent) Percentage Of Net Premium Ratio Capped The net premium ratio is capped at 100% (i.e. net premiums cannot exceed gross premiums). Premiums and deposits Separate Account, Liability, Premium and Deposit Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity index volatility Measurement Input, Equity Index Volatility [Member] Measurement Input, Equity Index Volatility 3.00%–3.99% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 [Member] Schedule of Investments [Table] Schedule of Investments [Table] Policy loans Policy Loans [Member] Total equity Balances, beginning Balances, ending Equity, Including Portion Attributable to Noncontrolling Interest Average price ( in usd per share) Shares Acquired, Average Cost Per Share Commercial mortgage loans, net Commercial mortgage loans, net Mortgage Loans on Real Estate, Commercial and Consumer, Net Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Earnings (Loss) Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Fixed Rate Commercial Mortgage Loans Fixed Rate Commercial Mortgage Loans [Member] Fixed Rate Commercial Mortgage Loans [Member] Product and Service [Axis] Product and Service [Axis] Policy loans Loans, Gross, Insurance Policy Debt Securities, Available-for-Sale, Allowance for Credit Loss [Line Items] Debt Securities, Available-for-Sale, Allowance for Credit Loss [Line Items] Investment Income [Table] Investment Income [Table] Effect of shadow accounting adjustments Additional Liability Long Duration Insurance Unrealized Investment Gain Loss Amount of cumulative increase (decrease) in present value of total expected payment to policyholder in excess of present value of total expected assessment from unrealized investment gains or losses, or shadow accounting adjustments. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. Range [Axis] Statistical Measurement [Axis] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Market Risk Benefits Long Duration Insurance Contracts Market Risk Benefits Disclosure [Text Block] The entire disclosure for market risk benefits. Net investment (gains) losses Net investment gains (losses) Gain (Loss) on Investments [Member] Discounted Liability for Future Policy Benefit, Discounted Activity [Abstract] Liability for Future Policy Benefit, Discounted Activity Effect of changes in cash flow assumptions Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change Lapse rate Measurement Input, Lapse Rate [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Benefit payments Market Risk Benefit, Benefit Payment Debt-to-Value [Axis] Debt-to-Value [Axis] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Effect of changes in instrument-specific credit risk AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax Schedule of Reconciliation of Adjusted Operating Income (Loss) for Segments to Consolidated Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Ending balance Additional Liability, Long-Duration Insurance, before Reinsurance, after Discount Rate Change Level 1 Fair Value, Inputs, Level 1 [Member] Lapse Rate, Non-performance Risk and Equity Index Volatility Measurement Input, Lapse Rate, Non-performance Risk And Equity Index Volatility [Member] Measurement Input, Lapse Rate, Non-performance Risk And Equity Index Volatility Diluted (in usd per share) Diluted per share (in usd per share) Earnings Per Share, Diluted Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Policyholder account balances, measurement input Embedded Derivative Liability, Measurement Input Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Limited partnerships Carrying value Limited Partnerships Investments Limited partnership investments accounted for at fair value when the partnership interest is considered minor or accounted for using the equity method of accounting if the ownership percentage exceeds the minor threshold. Policyholder Account Balance [Table] Policyholder Account Balance [Table] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Less: Allowance for credit losses Allowance for credit losses Beginning balance Ending balance Allowance for Loan and Lease Losses, Real Estate Disclosure In Tabular Form Of Revenue And Interest Expense In Respect Of Future Policy Benefits [Table] Disclosure In Tabular Form Of Revenue And Interest Expense In Respect Of Future Policy Benefits [Table] Disclosure in tabular form of revenue and interest expense in respect of future policy benefits [Table]. Consolidation Items [Domain] Consolidation Items [Domain] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Income (loss) from discontinued operations, net of taxes Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Cash flow assumption updates Cash Flow Assumption Updates The net effect of cash flow assumption updates in liability remeasurement (gains) losses included within net income. Less: reinsurance recoverable Additional Liability, Long-Duration Insurance, Reinsurance Recoverable, after Allowance Net investment gains (losses) available to Genworth Financial, Inc.’s common stockholders Gain Loss On Investments Attributable To Parent Amount of realized and unrealized gain (loss) on investments, net of the portion attributable to noncontrolling interests. Interest rate swaps hedging liabilities Interest Rate Swaps Hedging Liabilities [Member] Interest Rate Swaps Hedging Liabilities [Member] Reinsurance recoverable, net Reinsurance Recoverables, Including Reinsurance Premium Paid Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Issuances Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance Stock-based compensation expense and exercises and other Stockholders' Equity, Other Expected future gross premiums Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance Changes in fair value of market risk benefits and associated hedges Market Risk Benefit, Change in Fair Value, Gain (Loss) Finance and insurance Financial Services Sector [Member] Other Insurance, Other [Member] Amounts presented in the balance sheet: Amounts Presented In The Balance Sheet [Abstract] Amounts Presented In The Balance Sheet Derivative asset, measurement input Derivative Asset, Measurement Input Due after five years through ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Commercial mortgage loans Carrying value Commercial mortgage loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Greater Than 50% Below Cost Greater Than Fifty Percent Below Cost [Member] Greater Than Fifty Percent Below Cost [Member] Dividends to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Restricted cash proceeds on sale per litigation Restricted cash proceeds on sale per litigation Cash proceeds received by a wholly-owned subsidiary from a disposal transaction that may be restricted or limited as a result of litigation. Gain (loss) recognized in net income Gain (Loss) on Derivative Instruments, Net, Pretax Schedule of Gross Unrealized Losses and Fair Values of Securities in a Continuous Unrealized Loss Position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Other Commitments [Domain] Other Commitments [Domain] Other liabilities, policy and contract claims and other policy-related balances Increase (Decrease) in Other Operating Liabilities Product Information [Line Items] Product Information [Line Items] Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Non-U.S. government Non-U.S. government Debt Security, Government, Non-US [Member] Net unrealized gains (losses) on equity securities still held Equity Securities, FV-NI, Unrealized Gain (Loss) Other invested assets Other Investments [Member] Benefit payments Policyholder Account Balance, Benefit Payment East South Central East South Central [Member] East South Central [Member] Net income (loss): Net Income (Loss) Attributable to Parent [Abstract] Schedule of Change in Net Unrealized Gains (Losses) on Available-for-Sale Investment Securities Reported in Accumulated Other Comprehensive Income (Loss) Change in Net Unrealized Gains and Losses from Investment Securities [Table Text Block] Tabular disclosure of the change in net unrealized holding gain or loss on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period. Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Schedule of Significant Unobservable Inputs Used for Fair Value Measurements Classified As Level 3 Fair Value Input Assets Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets. This disclosure may include, but is not limited to, the fair value of the asset, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Derivative liabilities, fair value Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement Foreign currency translation and other adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Net amounts presented in the balance sheet, derivatives liabilities Derivative Liability, Subject to Master Netting Arrangement, after Offset Financial Instrument [Axis] Financial Instrument [Axis] Decrease due to change in intent or requirement to sell Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Sell before Recovery Benefits and expenses: Benefits, Losses and Expenses [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Foreign currency forward contracts Foreign Exchange Forward [Member] 12 months or more, Gross unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Interest expense Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Capital goods Capital Goods [Member] Capital Goods [Member] Policy fees and other income Policy Fees And Other Income Amount of fees and commissions from financial services and insurance contracts. Includes cost of insurance and other policy related fees, management and administrative fees, and insurance commissions. Less than 12 months, Gross unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Schedule of Distribution Across Property Type and Geographic Region for Commercial Mortgage Loans Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Realized investment gains (losses): Realized Investment Gains (Losses) [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Schedule of Components of Liability for Future Policy Benefits Schedule of Liability for Future Policy Benefits, by Product Segment [Table Text Block] Less: net income (loss) from continuing operations attributable to noncontrolling interests Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Effect of changes in future expected policyholder behavior Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption Non-performance risk (credit spreads) Measurement Input, Non-performance Risk [Member] Measurement Input, Non-performance Risk Gross unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Charges assessed to policyholders Charges assessed to policyholders The charges assessed to an insured for insurance provided. The charge may be based on the age, sex and risk classification of the insured. Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Other Other Property [Member] Net cash from (used by) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Investment grade External Credit Rating, Investment Grade [Member] Measure: Measure [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Available for Sale Securities Continuous Unrealized Loss Position [Table] Available for Sale Securities Continuous Unrealized Loss Position [Table] Available for Sale Securities Continuous Unrealized Loss Position [Table] Gross amounts recognized, net derivatives Derivative, Fair Value, Net Cash surrender value Policyholder Account Balance, Cash Surrender Value Schedule of Significant Unobservable Inputs Used for Certain Liability Fair Value Measurements Fair Value Input Liabilities Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the inputs used in the fair value measurement of liabilities. This disclosure may include, but is not limited to, the fair value of the liability, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Stock repurchase program, remaining authorized amount Share Repurchase Program, Remaining Authorized, Amount Net investment income Investment Income [Member] Third-Party Pricing Services Third-Party Pricing Services [Member] Third-Party Pricing Services [Member] South Atlantic South Atlantic [Member] South Atlantic [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Due after ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Net amounts presented in the balance sheet, derivatives assets Derivative Asset, Subject to Master Netting Arrangement, after Offset Expenses and fees Investment Income, Investment Expense Entity Tax Identification Number Entity Tax Identification Number Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Line Items] Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Line Items] Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Line Items] Fixed maturity securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] Fixed indexed annuity embedded derivatives Fixed Indexed Annuity Embedded Derivatives [Member] Fixed Indexed Annuity Embedded Derivatives Derivative qualifying as hedges Derivatives qualifying as hedges: Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued 76% - 100% Seventy Six Percent to One Hundred Percent [Member] Seventy Six Percent to One Hundred Percent Net change in allowance for credit losses on available-for-sale fixed maturity securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease) Commercial mortgage-backed Commercial Mortgage-Backed Securities [Member] Schedule of Pre-Tax Gain (Loss) Recognized in Net Income (Loss) for Effects of Derivatives Not Designated as Hedges Derivatives Not Designated as Hedging Instruments [Table Text Block] Less: reinsurance recoverable Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance Allowance for credit losses: Allowance for Loan and Lease Losses [Roll Forward] Securities sold Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Sold Fixed maturity securities: Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Trading Arrangement: Trading Arrangement [Axis] Current tax liabilities Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Total realized and unrealized (gains) losses, Included in net (income) Total realized and unrealized (gains) losses included in net (income) loss: Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Corporate and Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Less: Allowance for credit losses Reinsurance Recoverable, Allowance for Credit Loss Income (loss) from continuing operations: Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Separate Accounts Disclosure [Abstract] Separate Accounts Disclosure [Abstract] Percent of investment portfolio, greater than 10% Percentage Of Concentration Risk Concentration risk of greater than or equal to 10% of fixed maturity securities. 4.00% and greater Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater [Member] 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 Other Policyholder Account Balance, Increase (Decrease) from Other Change SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Retail Retail Site [Member] Adjusted operating income (loss) attributable to noncontrolling interests Adjusted Operating Income Attributable to N C I In Segment Profit Loss Measure Adjusted operating income attributable to noncontrolling interests used in reconciliation to segment profit or loss measure used by chief operating decision maker (CODM). East North Central East North Central [Member] East North Central [Member] Investments [Domain] Asset Class [Domain] Effect of changes in discount rate assumptions AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax Total realized and unrealized gains (losses), Included in net income Total realized and unrealized gains (losses) included in net income (loss): Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Common stock Common Stock [Member] Other Market Risk Benefit Increase Decrease From Other Changes Amount of increase (decrease) in contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from other changes. Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Broker Quotes Broker Quotes [Member] Broker Quotes [Member] Net change 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 Performance stock units, restricted stock units and other equity-based awards (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Beginning balance Ending balance Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change Accounting Changes Significant Accounting Policies [Text Block] Range [Domain] Statistical Measurement [Domain] Closed Block segment Closed Block Closed Block Closed Block Segment [Member] Closed Block Segment Schedule of Activity Associated with Derivative Instruments Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Fixed maturity securities available-for-sale, amortized costs Amortized cost Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Potentially dilutive securities: Earnings Per Share, Diluted, Other Disclosure [Abstract] Prior years Reserve released related to insured events of prior year Prior Year Claims and Claims Adjustment Expense U.S. corporate Debt Security, Corporate, US [Member] Benefit payments Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment Real Estate [Domain] Real Estate [Domain] Greater than 150 basis points above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater [Member] Asset Class [Axis] Asset Class [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Interest rate swaps Interest Rate Swap [Member] Total realized and unrealized gains (losses), Included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Unearned premiums Unearned Premiums Limited partnerships Limited Partnerships [Member] Limited partnerships. Debt Service Coverage Ratio Debt Service Coverage Ratio [Member] Debt Service Coverage Ratio [Member] Indexed universal life embedded derivatives Indexed universal life embedded derivatives Indexed Universal Life Embedded Derivatives [Member] Indexed Universal Life Embedded Derivatives [Member] Income taxes, net Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Tax This item represents the increase (decrease) in net unrealized investment gains (losses) related to income taxes. Gross unrealized losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in usd per share) Basic per share (in usd per share) Earnings Per Share, Basic Additional insurance liabilities, net of reinsurance recoverable Additional Liability, Long-Duration Insurance, after Reinsurance Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Schedule of Gains and Losses Included in Net Income (Loss) from Assets Measured at Fair Value Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] Tabular disclosure of the amount of gains or losses for the period included in earnings or resulted in a change to assets, have arisen from the use of significant unobservable inputs (level 3) to measure the fair value of assets classified in shareholders' equity. (Provision) benefit for income taxes OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax Fair Value of Financial Instruments [Table] Fair Value of Financial Instruments [Table] Fair Value of Financial Instruments [Table] Notional amount Notional Amount [Member] Notional Amount [Member] Total other comprehensive income (loss) Other comprehensive income (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax Diluted per share (in usd per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Schedule of Adjusted Operating Income (Loss) and Assets for Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Weighted-average liability duration (years) Liability for Future Policy Benefit, Weighted-Average Duration Schedule of Aggregate Fair Value of Separate Account Assets Fair Value, Separate Account Investment [Table Text Block] Other (flooring adjustment) Additional Liability Long Duration Insurance Other Flooring Adjustments Other changes in present value of total expected payment to policyholder in excess of present value of total expected assessment, including flooring adjustment to ensure the liability for each cohort is not less than zero when a cohort's present value of future net premiums exceeds the present value of future benefits. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. Measurement Input Type [Domain] Measurement Input Type [Domain] Policyholder Account Balance [Line Items] Policyholder Account Balance [Line Items] Total gains (losses) included in net income attributable to assets still held, Included in net income Total gains (losses) included in net income (loss) attributable to assets still held: Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Policy charges Policyholder Account Balance, Policy Charge Write-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Balanced funds Balanced Funds [Member] Foreign currency translation and other adjustments, current period OCI, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Schedule of Allowance for Credit Losses Related to Fixed Maturity Securities Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block] Hedging Designation [Domain] Hedging Designation [Domain] Total liabilities and equity Liabilities and Equity Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments [Line Items] Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments [Line Items] Disclosure in tabular form of undiscounted and discounted expected future gross premiums and expected future benefit payments [Line items]. Deferred acquisition costs Beginning balance Ending balance Total deferred acquisition costs Deferred Policy Acquisition Cost Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Premiums received Policyholder Account Balance, Premium Received Policyholder account base points Policyholder Account Balance, above Guaranteed Minimum Crediting Rate Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Schedule of Market Risk Benefit Summary of Market Risk Benefit [Table Text Block] Summary of market risk benefit. Accounting Policies [Abstract] Forward bond purchase commitments Forward bond purchase commitments Forward Contracts [Member] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Separate Accounts Separate Account [Text Block] Policyholder account balances Policyholder Contract Deposit Limited partnerships and other invested assets Payments to Acquire Other Investments Treasury stock, at cost Treasury Stock, Common [Member] Income (loss) from continuing operations Income (loss) from continuing operations (Income) loss from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest 2026 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Pay vs Performance Disclosure [Line Items] Assumed tax rate on adjustments to adjusted operating income Assumed Tax Rate On Adjustments Assumed tax rate on adjustments to reconcile net income to adjusted operating income SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] U.S. government, agencies and government-sponsored enterprises U.S. government, agencies and government-sponsored enterprises US Government Agencies Debt Securities [Member] Liabilities: Liabilities [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] 2.00%–2.99% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 [Member] Cash, cash equivalents, restricted cash and short-term investments Cash Cash Equivalents Restricted Cash And Short Term Investments [Member] Cash, cash equivalents, restricted cash and short-term investments 2024 Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Present value of expected net premiums: Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Total comprehensive income (loss) available to Genworth Financial, Inc.’s common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Schedule of Carrying Value of Limited Partnerships and Commitments to Fund Schedule Of Carrying Value of Limited Partnerships And Commitments To Fund [Table Text Block] Schedule of carrying value of limited partnerships and commitments to fund [Table Text Block]. Name Measure Name Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Schedule of Liabilities Measured at Fair Value on Recurring Basis and Utilized Significant Unobservable (Level 3) Inputs to Determine Fair Value Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fixed maturity securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Industry Sector [Domain] Industry Sector [Domain] Financial futures Financial futures Future [Member] Schedule of Unrealized Investment Gains and Losses Reflected As a Separate Component of Accumulated Other Comprehensive Income (Loss) Unrealized Gain (Loss) on Investments [Table Text Block] Schedule of Reclassifications in (out) of Accumulated Other Comprehensive Income (Loss), Net of Taxes Comprehensive Income (Loss) [Table Text Block] Long-term borrowings Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Income (loss) from discontinued operations: Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract] Total assets Assets Assets Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Beginning balance before effect of changes in instrument-specific credit risk Ending balance before effect of changes in instrument-specific credit risk Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change Percentage of available for sale debt securities Percentage of Available-for-Sale Securities, Debt Securities, Third Party Pricing Sources Percent of total fixed maturity securities portfolio priced using third-party pricing sources in determining fair value. Geographical [Domain] Geographical [Domain] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Cash flows from (used by) operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Other segment expenses Segment Reporting, Other Segment Item, Amount Concentration Risk Type [Axis] Concentration Risk Type [Axis] Reinsurance recoverable Reinsurance Recoverable Including Reinsurance Premium Paid [Member] Due after one year through five years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Expenses related to restructuring Restructuring Costs Financial instruments, derivatives assets Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Other invested assets Other Investments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Attributed fees collected Market Risk Benefit, Attributed Fee Collected Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Net unrealized gains (losses) on fixed maturity securities with an allowance for credit losses AOCI, Debt Securities, Available-for-Sale with Allowance for Credit Loss, Cumulative Gain (Loss), after Tax Change in instrument-specific credit risk of market risk benefits OCI, Market Risk Benefit, Instrument-Specific Credit Risk, Gain (Loss), after Adjustments and Tax Investment contracts Investment Contracts The amount of the liability as of the balance sheet date pertaining to the guarantee given by the insurance entity to contract holders of a specified rate of return (a guaranteed yield) on their investments for a specified period. PEO PEO [Member] Transfer into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Net unrealized gains (losses) on fixed maturity securities without an allowance for credit losses AOCI, Debt Securities, Available-for-Sale without Allowance for Credit Loss, Cumulative Gain (Loss), after Tax Equity index options Equity Index Options [Member] Equity Index Options [Member] Schedule of Maturity Distribution of Fixed Maturity Securities Investments Classified by Contractual Maturity Date [Table Text Block] Change in instrument- specific credit risk of market risk benefits AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Noncontrolling Interest [Member] Due one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Change in certain assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Reinsurance recoverable Reinsurance Recoverables, Gross Retained earnings Retained Earnings [Member] Total paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] Income Statement [Abstract] Income Statement [Abstract] Cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Interest accretion rate Additional Liability, Long-Duration Insurance, Weighted-Average Interest Accretion Rate 12 months or more, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Net liability for future policy benefits, before flooring adjustments Long Duration Term Insurance Contracts Liability For Future Policy Benefits Long duration term insurance contracts liability for future policy benefits. Interest expense Interest Expense [Member] Nonrecurring fair value Fair Value, Nonrecurring [Member] Genworth Holdings Genworth Holdings [Member] Genworth Holdings [Member] Disclosure In Tabular Form Of Revenue And Interest Expense In Respect Of Future Policy Benefits [Line Items] Disclosure In Tabular Form Of Revenue And Interest Expense In Respect Of Future Policy Benefits [Line Items] Disclosure in tabular form of revenue and interest expense in respect of future policy benefits [Line Items]. Product and Service [Domain] Product and Service [Domain] Funding agreements Funding Agreements [Member] Funding Agreements Transfer out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Diluted (in usd per share) Diluted per share (in usd per share) Income (Loss) from Continuing Operations, Per Diluted Share Net investment income Net investment income Net investment income Net Investment Income Total Genworth Financial, Inc.’s stockholders’ equity Parent [Member] Net income (loss) Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities Liabilities, Fair Value Disclosure Notional amount, beginning balance Notional amount, ending balance Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Fair value measurements Significant unobservable inputs [Line Items] Fair Value Measurements, Significant Unobservable Inputs [Line Items] Fair value measurements Significant unobservable inputs [Line Items] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Domain] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Domain] City Area Code City Area Code Schedule of Allowance for Credit Losses Related to Commercial Mortgage Loans Financing Receivable, Allowance for Credit Loss [Table Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Commercial mortgage loans Commercial Mortgage Loans Gain (Loss) Aggregate net gain (loss) related to commercial mortgage loans that is recognized in earnings during the period, before tax effects, including changes to the allowance for loan losses. Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Additional Liability, Long-Duration Insurance [Roll Forward] Additional Liability, Long-Duration Insurance [Roll Forward] Changes in fair value of market risk benefits and associated hedges Changes In Fair Value Of Market Risk Benefits And Associated Hedges [Member] Changes in fair value of market risk benefits and associated hedges. Cash flows from (used by) investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Weighted-average liability duration (years) Additional Liability, Long-Duration Insurance, Weighted-Average Duration Contractual period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Period in Effect Notional amount, beginning balance Notional amount, ending balance Number of Policies Aggregate number of policies under embedded derivatives. Expressed as an absolute value. Cash flow hedges Cash Flow Hedging [Member] Other liabilities Other Liabilities Equity securities, at fair value Equity securities Equity Securities, FV-NI Current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Net investment gains (losses) Net investment (gains) losses Net investment gains (losses) Gain (Loss) on Investments Derecognition (lapses and withdrawals) Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Interest rate swaps hedging assets Interest Rate Swaps Hedging Assets [Member] Interest Rate Swaps Hedging Assets [Member] Transfer out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Insurance reserves Increase (Decrease) in Insurance Liabilities Over collateralization, derivatives liabilities Collateral Delivered to Counterparties on Derivative Instruments, Over Collateralization Amount of over collateralization related to collateral we posted to derivative counterparties. Net market risk benefit, measurement input Market Risk Benefit, Measurement Input Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Subtotal Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Derivative qualifying as hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest [Member] Private equity and credit funds Limited Partnerships Private Equity Funds and Credit Funds [Member] Limited Partnerships Private Equity Funds and Credit Funds Additional Insurance Liabilities Additional Liability Long Duration Insurance Disclosure [Text Block] The entire disclosure for additional liabilities related to death or other insurance benefits that are included within policyholder account balances. Maturities/ terminations Number of Policies Terminations Maturities and/or terminations during period of policies with embedded derivative features. Other mortgage insurance business Other Mortgage Insurance Business [Member] Other Mortgage Insurance Business. Other Performance Measure, Amount Other Performance Measure, Amount Commercial mortgage loans Proceeds from Sale and Collection of Mortgage Notes Receivable Separate Account, Liability [Roll Forward] Separate Account, Liability [Roll Forward] Benefit payments Additional Liability, Long-Duration Insurance, Benefit Payment Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Table] Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Table] Schedule of Carrying Value of Limited Partnerships and Commitments To Fund [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Effect of changes in other future expected assumptions Market Risk Benefit, Increase (Decrease) from Other Assumption Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Additional paid-in capital Additional Paid in Capital, Common Stock Investments: Available-for-sale fixed maturity securities: Investments [Abstract] Entity [Domain] Entity [Domain] Net cash from (used by) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation 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] Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Undiscounted and Discounted Expected Future Gross Premiums and Expected Future Benefit Payments Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments [Table Text Block] Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments. Effective tax rate Effective Income Tax Rate Reconciliation, Percent Long- term care insurance Long-term care insurance Long Term Care Insurance [Member] Long term care insurance. Schedule of Balances of And Changes in Deferred Acquisition Costs Deferred Policy Acquisition Costs [Table Text Block] Carrying amount Reported Value Measurement [Member] Equity [Abstract] Equity [Abstract] Liability for Policy and Contract Claims Liability for Policy and Contract Claims Disclosure [Text Block] Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. Includes a rollforward of activity for the year. Segment Information Segment Reporting Disclosure [Text Block] Effect of actual variances from expected experience Additional Liability, Long-Duration Insurance, Cumulative Increase (Decrease) of Actual Variance from Expected Experience 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] Derivatives not designated as hedges Not Designated as Hedging Instrument [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Other invested assets: Other Invested Assets [Member] Other invested assets Other charges Separate Account, Liability, Increase (Decrease) from Other Change Weighted-average crediting rate Policyholder Account Balance, Weighted Average Crediting Rate Transfer into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Changes in Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Beginning balance before shadow accounting adjustments Ending balance before shadow accounting adjustments Additional Liability Long Duration Insurance Before Reinsurance And Shadow Adjustments Amount, before effect of reinsurance and shadow accounting adjustments, of present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. Weighted Average Weighted Average [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Acquisition and operating expenses, net of deferrals Selling, General and Administrative Expense Deferred tax asset Deferred Income Tax Assets, Net Fixed maturity securities, measurement input Debt Securities, Available-for-Sale, Measurement Input Schedule of Changes in Accumulated Other Comprehensive Income (Loss), Net of Taxes Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Commercial mortgage loans Commitments to Fund Commercial Mortgage Loan Investments [Member] Commitments to fund commercial mortgage loan investments. Industrial Industrial Property [Member] Residential mortgage-backed Residential mortgage-backed Residential Mortgage-Backed Securities [Member] Schedule of Weighted-Average Interest Rates for the Liability for Additional Insurance Liabilities Schedule of Weighted Average Interest Rates for the Liability for Additional Insurance Liabilities [Table Text Block] Schedule of weighted- average interest rates for the liability for additional insurance liabilities. Arrangement Duration Trading Arrangement Duration Financing Receivables More Then 90 Days Past Due Financing Receivables More Then 90 Days Past Due [Member] Financing Receivables More Then 90 Days Past Due [Member] Segments [Axis] Segments [Axis] Change in instrument- specific credit risk of market risk benefits AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Including Noncontrolling Interest [Member] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Less than 2.00% Policyholder Account Balance Guaranteed Minimum Crediting Rate Range Less Than 0200 [Member] Policyholder account balance guaranteed minimum crediting rate range less than 0200. Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Payment for (Proceeds from) Other Investing Activity Surrenders and withdrawals Policyholder Account Balance, Surrender and Withdrawal Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Other Commitments [Axis] Other Commitments [Axis] Other assets, at fair value Net market risk benefits, fair value Net liability Beginning balance Ending balance Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk Change in net unrealized investment gains (losses) Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Including OTTI Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Includes amounts related to other than temporary impairment (OTTI) loss. Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Limited partnerships Limited Partnerships Investments, Fair Value Disclosure Limited Partnerships Investments, Fair Value Disclosure Treasury stock acquired in connection with share repurchases Shares repurchase cost Treasury Stock, Value, Acquired, Cost Method Schedule of Balances of and Changes in Additional Insurance Liabilities Additional Liability, Long-Duration Insurance [Table Text Block] Increase from securities without allowance in previous periods Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not Previously Recorded Foreign currency translation and other adjustments Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member] Credit spreads Measurement Input, Credit Spread [Member] Gross amounts recognized, derivatives assets Derivative assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table] Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table] Amortization of deferred acquisition costs and intangibles Depreciation, Amortization and Accretion, Net Entity Registrant Name Entity Registrant Name Derivatives designated as cash flow hedges gain (loss), amount expected to be reclassified to net income in the next 12 months, net of tax Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Liquidation period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Investment performance Separate Account, Liability, Increase (Decrease) from Invested Performance Other Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change Additions Notional Amount Of Derivatives, Additions Additions during period to notional amount of derivatives. AOCI, Debt Securities, Available-for-Sale, Adjustment, After Tax [Roll Forward] AOCI, Debt Securities, Available-for-Sale, Adjustment, After Tax [Roll Forward] AOCI, Debt Securities, Available-for-Sale, Adjustment, After Tax Weighted-average debt-to-value Weighted Average Debt To Value This item represents the gross carrying amount of the debt compared to the value of the underlying properties. Total assets Assets, Fair Value Disclosure Number of securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Amortization of fixed maturity securities discounts and premiums Accretion (Amortization) of Discounts and Premiums, Investments Net amount, derivatives liabilities Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction Fair Value, Asset, Recurring Basis, Still Held, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Restatement Determination Date: Restatement Determination Date [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Due after five years through ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost Other, net Proceeds from (Payment for) Other Financing Activity Effect of changes in equity markets Market Risk Benefit, Increase (Decrease) from Equity Market Change Schedule of Liabilities by Class of Instrument that are Measured at Fair Value on Recurring Basis Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Amounts reclassified from OCI Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Separate account liabilities Beginning balance Ending balance Separate Account, Liability Name Trading Arrangement, Individual Name Gain (loss) recognized in net income (loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Repurchase of subsidiary shares Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests 1.51 - 2.00 One Point Five One to Two [Member] One Point Five One to Two Amount reclassified to net income (loss) in connection with forecasted transactions that were no longer considered probable of occurring Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net Postretirement benefit obligations, current period OCI, tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Derecognition (lapses and withdrawals) Additional Liability, Long-Duration Insurance, Derecognition Notional Notional Disclosures [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Total (gains) losses included in OCI attributable to liabilities still held, Included in OCI Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI Plaintiff's motion dismissed Plaintiffs Motion Dismissed Related To Dividends Paid By Subsidiary The value (monetary amount) of the dividends paid by a subsidiary the plaintiff sought to be returned by the parent company but was dismissed by the court. Name Awards Close in Time to MNPI Disclosures, Individual Name Beginning balance Ending balance Derivatives designated as cash flow hedges gain (loss), amount expected to be reclassified to future net income (loss), net of tax AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Bank loan investments Commitments To Fund Bank Loan Investments [Member] Commitments to Fund Bank Loan Investments [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] 1.26 - 1.50 One Point Two Six to One Point Five Zero [Member] One Point Two Six to One Point Five Zero 51% - 60% Fifty One Percent to Sixty Percent [Member] Fifty One Percent to Sixty Percent Fair value Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] Treasury stock, at cost Treasury Stock, Value AOCI Including Portion Attributable to Noncontrolling Interest AOCI Including Portion Attributable to Noncontrolling Interest [Member] Litigation Case [Axis] Litigation Case [Axis] Liability Class [Axis] Liability Class [Axis] Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Fixed maturity securities: Fixed Maturities [Member] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Balance Sheet Location [Domain] Statement of Financial Position Location, Balance [Domain] Net unrealized investment gains (losses) AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Policyholder account balances Beginning balance Ending balance Policyholder account balance Policyholder Account Balance Collateral received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Change in the discount rate used to measure future policy benefits AOCI, Liability for Future Policy Benefit, Including Noncontrolling Interest [Member] Number of mortgage loan Financing Receivable, Number Of Mortgage Loan Financing Receivable, Number Of Mortgage Loan Deferred profit liability Deferred Profit Liability Deferred profit liability. Gross amounts offset in the balance sheet, derivatives liabilities Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Less: Operating Income (Loss) [Abstract] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] 2025 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] All Executive Categories All Executive Categories [Member] Current year Current Year Claims and Claims Adjustment Expense Amortization Deferred Policy Acquisition Costs, Amortization Expense Common stock Common Stock, Value, Issued Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Table] Disclosure In Tabular Form Of Weighted Average Interest And Discount Rates For The Liability For Future Policy Benefits [Line Items] Disclosure In Tabular Form Of Weighted Average Interest And Discount Rates For The Liability For Future Policy Benefits [Line Items] Disclosure in tabular form of weighted average interest and discount rates for the liability for future policy benefits [Line items]. Premiums Premiums Earned, Net Utilities Utilities [Member] Utilities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Commitments and contingencies (Note 16) Commitments and Contingencies Counterparty financing spreads Measurement Input, Counterparty Financing Spreads [Member] Measurement Input, Counterparty Financing Spreads Total limited partnerships accounted for at NAV Fair Value Measured at Net Asset Value Per Share [Member] Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Adjustments to policyholder contract balances Other Comprehensive Income Unrealized Holding Gain Loss On Policyholder Contract Balances Arising During Period Before Tax Other comprehensive income unrealized holding gain loss on policyholder contract balances arising during period before tax. Noncontrolling interests Noncontrolling Interest [Member] Change in instrument-specific credit risk of MRBs, current period OCI, tax OCI, Market Risk Benefit, Instrument-Specific Credit Risk, Gain (Loss), after Adjustments, Tax Industrial Industrial [Member] Industrial Change in the discount rate used to measure future policy benefits AOCI, Liability for Future Policy Benefit, Noncontrolling Interest [Member] Schedule of Net Investment Income Investment Income [Table Text Block] Short-term investments Short-Term Investments [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Derivative assets: Derivative Financial Instruments, Assets Derivative Financial Instruments, Assets [Member] Effect of changes in cash flow assumptions Additional Liability, Long-Duration Insurance, Cumulative Increase (Decrease) from Cash Flow Change Life insurance Life Insurance Product Line [Member] Commercial mortgage loans Payments to Acquire Mortgage Notes Receivable Issuances Additional Liability, Long-Duration Insurance, Issuance Hedging Designation [Axis] Hedging Designation [Axis] Weighted-average debt service coverage ratio Weighted Average Debt Service Coverage Ratio This item represents the normalized annual income of the borrowers compared to the payments required under the terms of the corresponding loans. Fair Value, Liability, Recurring Basis, Still Held, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Taxes on adjustments Taxes On Reconciling Adjustments To Net Operating Income Loss Amount of tax provision (benefit) on adjustments to reconcile net operating income (loss) to net income (loss) available to Genworth Financial, Inc.'s common stockholders. Over collateralization, derivatives assets Collateral Received from Counterparties on Derivative Instruments, Over Collateralization Over collateralization from counterparties related to retained collateral from derivative counterparties. Liability for Claims and Claims Adjustment Expense [Line Items] Liability for Claims and Claims Adjustment Expense [Line Items] Future Policy Benefits Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Postretirement benefit obligations, current period OCI Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Gain (loss) reclassified into net income (loss) from OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Derivative Contract [Domain] Derivative Contract [Domain] Realized losses Debt Securities, Available-for-Sale, Realized Loss All Individuals All Individuals [Member] Fair value of financial instruments [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Expected future interest credited Measurement Input, Expected Future Interest Credited [Member] Measurement Input, Expected Future Interest Credited Derivative instruments Unrealized Gain (Loss) on Derivatives Market risk benefit assets Asset Market Risk Benefit, Asset, Amount Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Plaintiffs' motion Plaintiffs Motion Related To Dividends Paid By Subsidiary The value (monetary amount) of the dividends paid by a subsidiary the plaintiff seeks to be returned by the parent company. Policyholder Account Balances Long Duration Insurance Contracts Policyholder Account Balance Disclosure [Text Block] The entire disclosure for policyholder account balances. Cash from (used by) operating activities—discontinued operations Cash Provided by (Used in) Operating Activity, Discontinued Operation Amount reclassified from accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Greater than 100% Greater Than Hundred Percent [Member] Greater Than Hundred Percent Short-term investments Other Short-Term Investments Net unrealized investment gains (losses) AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest [Member] Liability for Future Policy Benefit Activity [Table] Liability for Future Policy Benefit Activity [Table] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Deposits to universal life and investment contracts Proceeds from Annuities and Investment Certificates Bond funds Bond Funds [Member] Bond Funds Geographical [Axis] Geographical [Axis] Change in unrealized gains (losses) on investment securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Disclosure In Tabular Form Of Weighted Average Interest And Discount Rates For The Liability For Future Policy Benefits [Table] Disclosure In Tabular Form Of Weighted Average Interest And Discount Rates For The Liability For Future Policy Benefits [Table] Disclosure in tabular form of weighted average interest and discount rates for the liability for future policy benefits [Table] . Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Total other invested assets Other Invested Assets, Fair Value Disclosure Fair value portion of other invested assets. Title of 12(b) Security Title of 12(b) Security Interest accretion (locked-in) rate Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate Provision Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] Middle Atlantic Middle Atlantic [Member] Middle Atlantic [Member] Due one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Number of plaintiffs Loss Contingency, Number of Plaintiffs Deferred Policy Acquisition Cost [Table] Deferred Policy Acquisition Cost [Table] Net income (loss) available to Genworth Financial, Inc.’s common stockholders per share: Earnings Per Share [Abstract] Paid related to insured events of: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Changes in fair value of market risk benefits attributable to interest rates, equity markets and associated hedges Changes In Fair Value Of Market Risk Benefits Attributable To Interest Rates, Equity Markets And Associated Hedges Amount of (gain) loss from changes in fair value attributable to interest rates, equity markets and associated hedges of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. Excludes change attributable to instrument-specific credit risk, changes in reserves, attributable fees and benefit payments. 1.00 - 1.25 One to One Point Two Five [Member] One to One Point Two Five Amortization of deferred acquisition costs and intangibles Amortization Of Deferred Acquisition Costs And Intangibles The aggregate expense charged against earnings to allocate the cost of deferred acquisition costs and intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Additions Number of Policies Additions Additions during period to policies with embedded derivative features. Fixed indexed annuity embedded derivatives Fixed indexed annuity embedded derivatives Embedded Derivative Financial Instruments [Member] Actual variances from expected experience  Actual Variances From Expected Experience The net effect of actual variances from expected experience in liability remeasurement (gains) losses included within net income. Non-U.S. corporate Debt Security, Corporate, Non-US [Member] Market risk benefits, net of reinsurance recoverable Market Risk Benefit, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] Shares repurchased (in shares) Treasury Stock, Shares, Acquired Fair Value of Financial Instruments [Line Items] Fair Value of Financial Instruments [Line Items] Fair Value of Financial Instruments [Line Items] Award Timing Disclosures [Line Items] Schedule of Net Investment Gains (Losses) Gain (Loss) on Securities [Table Text Block] Measurement Frequency [Domain] Measurement Frequency [Domain] Net beginning balance Net ending balance Liability for Unpaid Claims and Claims Adjustment Expense, Net OCI before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Debt Service Coverage Ratio [Domain] Debt Service Coverage Ratio [Domain] Debt Service Coverage Ratio Net income (loss) available to Genworth Financial, Inc.’s common stockholders Net Income (Loss) Attributable to Parent New England New England [Member] New England [Member] Net transfers from (to) separate accounts Net transfers from (to) general account Transfer to (from) Policyholder Account Balance (to) from Separate Account Future policy benefits Total future policy benefits Liability for Future Policy Benefit, before Reinsurance Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Treasury stock acquired in connection with share repurchases Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Net premiums collected Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected West South Central West South Central [Member] West South Central [Member] Write-offs Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Reportable segment adjusted operating income (loss) available to Genworth Financial, Inc.’s common stockholders Operating income (loss) Operating Income (Loss) Schedule of Derivative Liabilities Subject to Master Netting Arrangement Offsetting Liabilities [Table Text Block] Net unrealized gains (losses) on securities with an allowance for credit losses Net Unrealized Gains Losses On Securities With An Allowance For Credit Losses Net Unrealized Gains Losses On Securities With An Allowance For Credit Losses Net unrealized investment gains (losses) Net unrealized investment (gains) losses: AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest [Member] Retained earnings Retained Earnings (Accumulated Deficit) At guaranteed minimum Policyholder Account Balance, at Guaranteed Minimum Crediting Rate [Member] 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] Less than 12 months, Number of securities in a continuous loss position Less than 12 months, Number of securities in a continuous loss position Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Fixed maturity securities—taxable Taxable Fixed Maturities [Member] Fixed maturity securities-taxable Derivative qualifying as hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Fixed maturity and equity securities Proceeds From Sales Of Debt And Equity Securities Amount of cash inflow from sales of investments in debt and equity securities measured at fair value. Deferred income taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income (loss) to net cash from (used by) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from (used by) financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Additional insurance liabilities Additional Insurance Liabilities [Member] Additional Insurance Liabilities [Member]. Commercial mortgage loans Commercial Mortgage Loans [Member] Commercial mortgage loans Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Assets Measured at Fair Value on Recurring Basis and Utilized Significant Unobservable (Level 3) Inputs to Determine Fair Value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Interest accretion Liability for Future Policy Benefit, Interest Expense Amendment Flag Amendment Flag Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Liability for policy and contract claims Total liability for policy and contract claims Beginning balance Ending balance Liability for Claims and Claims Adjustment Expense Percentage of investment portfolio by which no other industry group exceeded Percentage of Investment Portfolio by Which No Industry Group Exceeded Investment disclosure of credit risk exposure of fixed maturity securities in a single issuer as measured by a stated percentage of the Company's stockholders' equity, by which no industry group exceeded other than those identified. Termination Date Trading Arrangement Termination Date Beginning balance, at original discount rate Ending balance, at original discount rate Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance Adjustments to policyholder contract balances Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Policyholder Contract Balances This item represents the increase (decrease) in unrealized investment gains (losses) related to policyholder contract balances. Apartments Apartment Building [Member] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Less: reinsurance recoverable Market Risk Benefit, Reinsurance Recoverable, after Allowance Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments [Table] Disclosure In Tabular Form Of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefit Payments [Table] Disclosure in tabular form of undiscounted and discounted expected future gross premiums and expected future benefit payments [Table]. Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain (Loss) Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Schedule of Assets by Class of Instrument that are Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Basic (in shares) Weighted-average common shares used in basic earnings (loss) per share calculations (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Basic and Diluted Earnings (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Derivative assets, at fair value Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Segment Reporting [Abstract] Segment Reporting [Abstract] Market Risk Benefit [Roll Forward] Market Risk Benefit [Roll Forward] Expected future gross premiums Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance Fair Value, Separate Account Investment [Line Items] Fair Value, Separate Account Investment [Line Items] Policyholder account minimum credit rating Policyholder Account Balance, Guaranteed Minimum Credit Rating Net realized gains (losses) on available-for-sale fixed maturity securities Debt Securities, Available-for-Sale, Realized Gain (Loss) Unrealized gains (losses) on fixed maturity securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Issuances Liability for Future Policy Benefit, Expected Net Premium, Issuance Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Change in the discount rate used to measure future policy benefits OCI, Liability for Future Policy Benefit, Gain (Loss), after Reclassification Adjustment and Tax Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Liability remeasurement (gains) losses Liability for Future Policy Benefit, Remeasurement Gain (Loss) Net realized gains (losses) on equity securities sold Equity Securities, FV-NI, Realized Gain (Loss) Recoveries Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Below investment grade External Credit Rating, Noninvestment Grade [Member] Gross amounts offset in the balance sheet, derivatives assets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Foreign currency translation and other adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] 2021 and prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Equity securities Equity Securities [Member] Fixed maturity securities available-for-sale, allowance for credit losses Beginning balance Ending balance Allowance for credit losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Total liabilities Liabilities Consumer—cyclical Consumer—cyclical Consumer Cyclical [Member] Consumer- Cyclical [Member] Dividends paid to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Number Of Policies [Roll Forward] Number Of Policies [Roll Forward] Number Of Policies Subtotal Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Commitments to fund investments: Commitments to fund Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Equity funds Separate Account, Equity Security [Member] Gross premiums Liability for Future Policy Benefit, Gross Premium Income Fair Value, Separate Account Investment [Table] Fair Value, Separate Account Investment [Table] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Consolidation Items [Axis] Consolidation Items [Axis] Schedule of Policyholder Account Balance Policyholder Account Balance [Table Text Block] Gross investment income before expenses and fees Gross Investment Income, Operating Policy charges Separate Account, Liability, Policy Charge Other Realized Gains Losses On Other Investments Realized Gains Losses On Other Investments Market Risk Benefit [Table] Market Risk Benefit [Table] Other invested assets Other Invested Assets Not Carried At Fair Value Amount of other invested assets not measured at fair value in the statement of financial position. Assessments collected Additional Liability Long Duration Insurance Assessments Collected Amount of assessments collected from policyholder related to present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate Debt Securities Corporate Debt Securities [Member]