Contributions to subsidiaries Payments of Distributions to Affiliates Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Credit spreads Measurement Input, Credit Spread [Member] Related party transactions Related Party Transactions Disclosure [Text Block] Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Cover [Abstract] 2030 and thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Multiemployer Plan [Table] Multiemployer Plan [Table] 2016 Short-Duration Insurance Contracts, Accident Year 2016 [Member] Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Trading Symbol Trading Symbol Non-NEOs Non-NEOs [Member] Share-based payment arrangement, tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Employer matching contribution, vesting period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Cash dividends Dividends, Cash Income Tax Examination [Line Items] Income Tax Examination [Line Items] Short-term investments Short-Term Investments [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Ceding commission Reinsurance, Percentage Of Ceding Commission Reinsurance, Percentage Of Ceding Commission Reinsurance Reinsurance Accounting Policy [Policy Text Block] Nature of business and organization structure Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Loss before equity in income of subsidiaries Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Proceeds from stock options exercised Proceeds from Stock Options Exercised Fair Value Fair Value Disclosures [Text Block] Net unrealized investment gains (losses) OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Award Timing Disclosures [Line Items] Short-duration Insurance Contracts, Accident Year [Domain] Short-Duration Insurance Contracts, Accident Year [Domain] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Schedule Of Average Payout Of Incurred Claims Schedule Of Average Payout Of Incurred Claims [Table Text Block] Schedule Of Average Payout Of Incurred Claims Employee transfer (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer In Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer In Period Plan Name [Domain] Plan Name [Domain] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Senior Notes, Due 2029 Senior Notes, Due 2029 [Member] Senior Notes, Due 2029 Short-duration Insurance Contracts, Claims Development [Table] Short-Duration Insurance Contracts, Claims Development [Table] Dividend equivalents (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents, Weighted Average Grant Date Fair Value Increase (reduction) in rate resulting from: Effective Income Tax Rate Reconciliation, Percent [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Scenario One Scenario One [Member] Scenario One Award Timing Method Award Timing Method [Text Block] Subtotal Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] All outstanding liabilities before 2015, net of reinsurance Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net Domestic mortgage insurance Domestic Mortgage Insurance Product [Member] Domestic Mortgage Insurance Product Measurement Frequency [Axis] Measurement Frequency [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Insider Trading Policies and Procedures [Line Items] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Compensation Amount Outstanding Recovery Compensation Amount Number of states in which entity operates Number of States in which Entity Operates 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] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Capital loss carry forwards Deferred Tax Assets, Capital Loss Carryforwards Premiums receivable Premiums Receivable, Net Payments of Debt Issuance Costs Payments of Debt Issuance Costs Tabular List, Table Tabular List [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Credit Facility [Domain] Credit Facility [Domain] Liability for Claims and Claims Adjustment Expense Loss reserves, beginning of year Loss reserves, end of year Liability for Claims and Claims Adjustment Expense 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] Other comprehensive income (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Profit commission Reinsurance, Maximum Percentage Profit Commission Reinsurance, Maximum Percentage Profit Commission DSUs Deferred Share Units [Member] Deferred Share Units Employee Stock Option Share-Based Payment Arrangement, Option [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Proceeds from (Payments for) Other Financing Activities Proceeds from (Payments for) Other Financing Activities Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Current reinsurance coverage Current Reinsurance Coverage Current Reinsurance Coverage Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Current first layer retained loss Current First Layer Retained Loss Current First Layer Retained Loss Contractual Maturities of Fixed Maturity Securities Available-For-Sale Investments Classified by Contractual Maturity Date [Table Text Block] Award Type [Axis] Award Type [Axis] Net income per common share: Earnings Per Share, Basic [Abstract] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Total liabilities Liabilities Cash dividends paid (in usd per share) Common Stock, Dividends, Per Share, Cash Paid Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revolving Credit Facility Revolving Credit Facility [Member] Expiration Date Trading Arrangement Expiration Date Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Quota Share Reinsurance Ceding Percentage, Ceding Commission, And Profit Commission Reinsurance, Ceding [Table Text Block] Reinsurance, Ceding Total Shareholder Return Amount Total Shareholder Return Amount Largest Customer Largest Customer [Member] Largest Customer 2020 Short-Duration Insurance Contract, Accident Year 2020 [Member] Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Transfer out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Gross realized gains Debt Securities, Available-for-Sale, Realized Gain Loss reserves Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Retirement Plan Name [Axis] Retirement Plan Name [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Other assets Other Assets Number of reported delinquencies Short-Duration Insurance Contract, Cumulative Number of Reported Claims Employee Benefit Plans Postemployment Benefit Plans, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Deferred Acquisition Costs ("DAC") Deferred Acquisition Costs [Policy Text Block] Deferred Acquisition Costs Net unrealized gains (losses) on securities Change in net unrealized investment gains (losses) Change in net unrealized investment gains (losses) OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Statutory Accounting Practice, Jurisdiction [Axis] Statutory Accounting Practice, Jurisdiction [Axis] Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Total equity Stockholders' equity, beginning balance Stockholders' equity, ending balance Equity, Attributable to Parent Gross deferred income tax assets Deferred Tax Assets, Gross Due one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Concentration Risk Type [Domain] Concentration Risk Type [Domain] Residential and other mortgage-backed, amortization Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Acquisition and operating expenses, net of deferrals Selling, General and Administrative Expense Amounts payable to Genworth Accounts Payable Defined contribution plan, cost Defined Contribution Plan, Cost SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Document Fiscal Period Focus Document Fiscal Period Focus Percentage of payout, year six Short-Duration Insurance Contracts, Historical Claims Duration, Year Six All Executive Categories All Executive Categories [Member] Retirement Plan Tax Status [Domain] Retirement Plan Tax Status [Domain] Net unrealized gains (losses) on investments AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Assets Assets [Abstract] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pricing Services Pricing Services [Member] Pricing Services Document Type Document Type Loss reserves Net loss reserves, beginning of year Net loss reserves, end of year Liability for Unpaid Claims and Claims Adjustment Expense, Net Percentage of payout, year four Short-Duration Insurance Contracts, Historical Claims Duration, Year Four Parent Company Parent Company [Member] Maximum Maximum [Member] Condensed Cash Flow Statement Condensed Cash Flow Statement [Table Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Liability for Loss Reserves Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Investment Type [Axis] Investment Type [Axis] Reinsurance Reinsurance [Text Block] Accrued investment income Accrued Investment Income Receivable Statistical Measurement [Axis] Statistical Measurement [Axis] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Non-cash capital contributions to subsidiaries Other Significant Noncash Transaction, Value of Consideration Given Name Outstanding Recovery, Individual Name Statutory net assets above minimum threshold, amount Statutory Net Assets Above Minimum Threshold, Amount Statutory Net Assets Above Minimum Threshold, Amount S 2023 Q4 Dividends S 2023 Q4 Dividends [Member] S 2023 Q4 Dividends Award Timing Predetermined Award Timing Predetermined [Flag] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Assumed Assumed Premiums Earned Redemption price, percentage Debt Instrument, Redemption Price, Percentage Diluted (in usd per share) Earnings Per Share, Diluted Counterparty Name [Domain] Counterparty Name [Domain] Other Income Revenue from Contract with Customer [Policy Text Block] Income before income taxes, domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic State and Local Jurisdiction State and Local Jurisdiction [Member] Loss Reserves Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Retirement Benefits [Abstract] Percent of employees' gross pay Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Enact Holdings Inc. 2021 Omnibus Incentive Plan Enact Holdings Inc. 2021 Omnibus Incentive Plan [Member] Enact Holdings Inc. 2021 Omnibus Incentive Plan Customer [Axis] Customer [Axis] Statement of Financial Position [Abstract] Fixed maturity securities portfolio, percentage Debt Securities, Available-For-Sale, Percentage Of Portfolio Debt Securities, Available-For-Sale, Percentage Of Portfolio Fair Value, Asset, Recurring Basis, Still Held, Unrealized 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] Other asset-backed Asset-Backed Securities [Member] Condensed Statement of Comprehensive Income Condensed Statement of Comprehensive Income [Table Text Block] Total realized and unrealized gains (losses) included in net income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statutory Information Insurance Disclosure [Text Block] Loss Reserves Liability Reserve Estimate, Policy [Policy Text Block] Other Deferred Tax Liabilities, Other Genworth Omnibus Incentive Plans Genworth Omnibus Incentive Plans [Member] Genworth Omnibus Incentive Plans NCDOI North Carolina Department Of Insurance [Member] North Carolina Department Of Insurance Provision for income taxes Total provision for income taxes Benefit (expense) for income taxes Benefit for income taxes Income Tax Expense (Benefit) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Valuation technique, broker quotes Valuation Technique, Broker Quotes [Member] Valuation Technique, Broker Quotes Period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Statement of Comprehensive Income [Abstract] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Interest expense Interest Expense, Operating and Nonoperating Net premiums written: Premiums Written, Net [Abstract] Number of additional shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Equity Method Investments Equity Method Investments [Policy Text Block] Employee transfer (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer, Shares All Adjustments to Compensation All Adjustments to Compensation [Member] Additional paid-in capital Additional Paid in Capital Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Commitments and Contingencies Disclosure [Abstract] Legal Entity [Axis] Legal Entity [Axis] Total other comprehensive income (loss) Other Comprehensive Income (Loss) And Other Adjustments, Net Of Tax, Portion Attributable To Parent Other Comprehensive Income (Loss) And Other Adjustments, Net Of Tax, Portion Attributable To Parent Enact Re Ltd Enact Re Ltd [Member] Enact Re Ltd Dividends from subsidiaries SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries Unearned premiums Increase (Decrease) in Unearned Premiums Related Party Transaction [Axis] Related Party Transaction [Axis] Reinsurance Policy, Type [Axis] Reinsurance Contract [Axis] Condensed Income Statement Condensed Income Statement [Table Text Block] Unrealized gains (losses) on investment securities Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity Address, State or Province Entity Address, State or Province Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Amortized cost SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Cost Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Financial Instruments [Domain] Financial Instruments [Domain] Time-based cash awards Time-Based Cash Awards [Member] Time-Based Cash Awards Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Reserve Adjustment [Domain] Reserve Adjustment [Domain] Reserve Adjustment [Domain] Liabilities and equity Liabilities and Equity [Abstract] Change in allowance for credit losses on commitment Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease) Restatement Determination Date Restatement Determination Date Fair value Estimate of Fair Value Measurement [Member] Net investment income Net investment income Net Investment Income Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Schedule II - Parent Company Only Condensed Financial Information of Parent Company Only Disclosure [Text Block] Ceding percentage Reinsurance, Percentage Of Premiums Ceded Reinsurance, Percentage Of Premiums Ceded Scenario Two Scenario Two [Member] Scenario Two Right-of-use assets Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Condensed Financial Information Disclosure [Abstract] Schedule of Estimated Fair Value Liabilities Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Purchase of equity interest Purchase of equity investment Payments to Acquire Equity Method Investments Earnings Per Share Earnings Per Share [Text Block] Subsequent Event Subsequent Event [Member] Non-Cyclical Consumer Sector Non-Cyclical Consumer Sector [Member] Non-Cyclical Consumer Sector Expenses: Costs and Expenses [Abstract] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Net investment gains (losses) Net (gains) losses on investments Net investment gains (losses) Gain (Loss) on Investments Income Taxes Income Tax, Policy [Policy Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Other income Other Income PEO PEO [Member] Premiums receivable Increase (Decrease) in Premiums Receivable Name Trading Arrangement, Individual Name Entity Public Float Entity Public Float Operating lease term (in years) Lessee, Operating Lease, Remaining Lease Term Loss before income taxes and equity in income of subsidiaries Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest 2023 Short-Duration Insurance Contract, Accident Year 2023 [Member] Pro Forma income tax increase Income Tax Expense, Pro Forma Increase, Separate Return Method Income Tax Expense, Pro Forma Increase, Separate Return Method Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Premiums Revenue Recognition, Premiums Earned, Policy [Policy Text Block] 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] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Schedule I, Summary of Investments - Other than Investments in Related Parties SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Text Block] Local Phone Number Local Phone Number Valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Contributions to subsidiaries Payments to Acquire Interest in Subsidiaries and Affiliates Loss incurred related to prior accident years, favorable (unfavorable) adjustments Prior Year Claims And Claims Adjustment, Favorable Reserve Adjustments Prior Year Claims And Claims Adjustment, Favorable Reserve Adjustments Change in certain assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Investments Deferred Tax Liabilities, Investments 2021 Short-Duration Insurance Contract, Accident Year 2021 [Member] PEO Total Compensation Amount PEO Total Compensation Amount Fixed maturity securities available-for-sale, fair value Fair value Fair value Total fixed maturity securities Debt Securities, Available-for-Sale, Excluding Accrued Interest U.S. government, agencies and GSEs US Government-sponsored Enterprises Debt Securities [Member] Debt Disclosure [Abstract] Carrying value SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount Common stock Common Stock [Member] Accrued investment income Increase (Decrease) in Accrued Investment Income Receivable Percentage of payout, year eight Short-Duration Insurance Contracts, Historical Claims Duration, Year Eight Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Unrecorded Unconditional Purchase Obligation, Term Unrecorded Unconditional Purchase Obligation, Term Effects of Reinsurance Effects of Reinsurance [Table Text Block] Line of Credit Line of Credit [Member] Net premiums earned: Premiums Earned, Net [Abstract] Savings Plan Contribution Two Savings Plan Contribution Two [Member] Savings Plan Contribution Two Segment Reporting [Abstract] Entity Central Index Key Entity Central Index Key Claims Development [Line Items] Claims Development [Line Items] Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Total incurred Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Statutory Accounting Practices Disclosure Statutory Accounting Practices Disclosure [Table Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Genworth 2018 Omnibus Incentive Plan Genworth 2018 Omnibus Incentive Plan [Member] Genworth 2018 Omnibus Incentive Plan Stockholders' Equity Equity [Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting Segment Reporting Disclosure [Text Block] Stock-based compensation expense and exercises and other APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Measurement Basis [Axis] Measurement Basis [Axis] Percentage of payout, year three Short-Duration Insurance Contracts, Historical Claims Duration, Year Three S 2022 Q4 Dividends S 2022 Q4 Dividends [Member] S 2022 Q4 Dividends Title Trading Arrangement, Individual Title Consolidated Entities [Axis] Consolidated Entities [Axis] Unrecognized tax benefits Unrecognized Tax Benefits Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] City Area Code City Area Code Equity in income of subsidiaries Equity in income of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Auditor Location Auditor Location Accrued commissions and general expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Dividends Payable [Table] Dividends Payable [Table] Repurchase of common stock Repurchase of common stock Payments for Repurchase of Common Stock Summary Investment Income Investment Income [Table Text Block] Summary of Significant Inputs used for Fair Value Measurement of Fixed Maturity Securities Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Weighted-average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Net income per common share: Earnings Per Share [Abstract] Equity: Equity [Abstract] Acquisition costs deferred Increase (Decrease) in Deferred Policy Acquisition Costs Fair value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Risk-to-capital ratio Statutory Accounting Practices, Ratio Of Risk To Capital Statutory Accounting Practices, Ratio Of Risk To Capital Stock repurchased and retired during period (in shares) Stock Repurchased and Retired During Period, Shares Related Party Transaction [Line Items] Related Party Transaction [Line Items] Non-U.S. government Debt Security, Government, Non-US [Member] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Operating lease liabilities Operating Lease, Liability Underlying Securities Award Underlying Securities Amount PSUs Performance Shares [Member] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Amendment Flag Amendment Flag Carrying amount Reported Value Measurement [Member] SARs Stock Appreciation Rights (SARs) [Member] Less than 12 months, Number of securities Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract] Deferred borrowing charges Debt Issuance Costs, Net Due one year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Borrowings Debt Disclosure [Text Block] Condensed Income Statement [Table] Condensed Income Statement [Table] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Face amount Debt Instrument, Face Amount Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Other postretirement benefits cost Other Postretirement Benefits Cost (Reversal of Cost) U.S. government, agencies and GSEs US Government Debt Securities [Member] Audit Information [Abstract] Audit Information [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Statutory Accounting Principles Industry-Specific Policies, Insurance Companies [Policy Text Block] Other Payments for (Proceeds from) Other Investing Activities 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] Auditor Name Auditor Name Terminated (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt 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] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Unearned premium and loss reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Unearned Premiums Reserve SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract] Net income Net income Net income available to EHI common stockholders Net Income (Loss) Available to Common Stockholders, Basic Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] 2024 Short-Duration Insurance Contract, Accident Year 2024 [Member] Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Statutory minimum net assets threshold Minimum Net Assets Threshold Minimum Net Assets Threshold Total assets Assets Cumulated paid claims and allocated claim adjustment expenses, net of reinsurance Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net Utilities Industry Group Utilities Industry Sector [Member] Utilities Industry Sector Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Statutory Accounting Practice, Jurisdiction [Domain] Statutory Accounting Practice, Jurisdiction [Domain] Share-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Statutory policyholders’ surplus Statutory Accounting Practices, Statutory Capital and Surplus, Balance Reclassification adjustments to net investment (gains) losses, net of taxes of $(4,756), $(2,945) and $(464), respectively Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Net unrealized investment gains (losses) AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax Termination Date Trading Arrangement Termination Date Statutory net assets above minimum threshold, percent Statutory Net Assets Above Minimum Threshold, Percent Statutory Net Assets Above Minimum Threshold, Percent Related Party Transaction [Table] Related Party Transaction [Table] 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] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Statutory net assets amount Statutory Net Assets Amount Statutory Net Assets Amount Other liabilities Other Liabilities Reinsurance Retention Policy [Table] Reinsurance Retention [Table] Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Genworth Holdings, Inc. Genworth Holdings, Inc. [Member] Genworth Holdings, Inc. Debt Instrument [Axis] Debt Instrument [Axis] Net income Net income Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Employee transfer (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Employee Transfer, Weighted Average Grant Date Fair Value Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Total investments Available-for-Sale Securities [Member] Total losses and expenses Benefits, Losses and Expenses Entity File Number Entity File Number Consolidated Entities [Domain] Consolidated Entities [Domain] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Capital Loss Carryforward Capital Loss Carryforward [Member] Current federal income taxes Current Federal Tax Expense (Benefit) Dividends Dividends, Common Stock Name Forgone Recovery, Individual Name Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Net Investment Income and Net Investment Gains and Losses Investment, Policy [Policy Text Block] Other Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Residential and other mortgage-backed, fair value Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Qualified Plan Qualified Plan [Member] Liabilities: Components of Deferred Tax Liabilities [Abstract] Percentage of payout, year two Short-Duration Insurance Contracts, Historical Claims Duration, Year Two Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount 2018 Short-Duration Insurance Contracts, Accident Year 2018 [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Provision for income taxes OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax 12 months or more, Gross unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Net realized gains (losses) Debt Securities, Available-for-Sale, Realized Gain (Loss) Name Awards Close in Time to MNPI Disclosures, Individual Name Amortization of deferred acquisition costs and intangibles Amortization Of Deferred Policy Acquisition Costs And Intangibles Amortization Of Deferred Policy Acquisition Costs And Intangibles Revenue Benchmark Revenue Benchmark [Member] Less than 12 months, Gross unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Entity Filer Category Entity Filer Category Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Statistical Measurement [Domain] Statistical Measurement [Domain] Gross unrealized losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax All Trading Arrangements All Trading Arrangements [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period 2017 Short-Duration Insurance Contracts, Accident Year 2017 [Member] 2022 Short-Duration Insurance Contract, Accident Year 2022 [Member] Tax credit carryforward, amount Tax Credit Carryforward, Amount Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Equity method investments Investments in subsidiaries Equity Method Investments Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Residential mortgage-backed Residential Mortgage-Backed Securities [Member] Other Performance Measure, Amount Other Performance Measure, Amount Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] PMIERs required by GSEs Private Mortgage Insurer Eligibility Requirements Set By Government Sponsored Enterprises [Member] Private Mortgage Insurer Eligibility Requirements Set By Government Sponsored Enterprises Initial reinsurance coverage Initial Reinsurance Coverage Initial Reinsurance Coverage Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Effects of Reinsurance [Table] Effects of Reinsurance [Table] Industry Sector [Domain] Industry Sector [Domain] Gross realized (losses) Debt Securities, Available-for-Sale, Realized Loss Total federal income taxes Federal Income Tax Expense (Benefit), Continuing Operations Entity Tax Identification Number Entity Tax Identification Number Schedule of Long-term Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Deferred acquisition costs Deferred Policy Acquisition Cost Income taxes payable Taxes Payable, Current Plan Name [Axis] Plan Name [Axis] Net assets risk-based multiplier Net Assets Risk-Based Multiplier Net Assets Risk-Based Multiplier Equity Components [Axis] Equity Components [Axis] Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Technology And Communications Sector Technology And Communications Sector [Member] Technology And Communications Sector Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year, Net Losses paid related to current accident year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year, Net Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year, Net Beginning Balance Ending Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Total expenses Costs and Expenses State income taxes Deferred Tax Assets, State Taxes Loss Adjustment [Domain] Loss Adjustment [Domain] Loss Adjustment [Domain] Direct Direct Premiums Earned Investments [Domain] Investments [Domain] Supplementary disclosure of cash flow information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Health And Life Insurance Benefit Plans Health And Life Insurance Benefit Plans [Member] Health And Life Insurance Benefit Plans Maturities of fixed maturity securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Net deferred income tax asset (liability) Deferred Tax Assets, Net 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five Increase in valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Weighted average Weighted Average [Member] 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] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Losses paid related to prior accident years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Operating lease expense Operating Lease, Expense Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Loss Adjustment [Axis] Loss Adjustment [Axis] Loss Adjustment Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Amortization of fixed maturity securities discounts and premiums Accretion (Amortization) of Discounts and Premiums, Investments Recurring Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Product and Service [Domain] Product and Service [Domain] Statutory amount available for dividend payments without regulatory approval Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval Exercised (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Fair Value Disclosures [Abstract] Losses incurred related to prior accident years Prior year claims and claims unfavorable (favorable) adjustment Prior Year Claims and Claims Adjustment Expense Percentage of payout, year seven Short-Duration Insurance Contracts, Historical Claims Duration, Year Seven Total gains (losses) attributable to assets still held included in net income Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Direct Direct Premiums Written Security Exchange Name Security Exchange Name Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Write-down of available-for-sale fixed maturity securities Write down of AFS securities Write down of AFS securities Unrealized gains (losses) on investment securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Related Party Transaction [Domain] Related Party Transaction [Domain] Financial Services Sector Financial Services Sector [Member] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Fixed maturity securities available-for-sale Fixed maturity securities Fixed Maturities [Member] Number of awards Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Fair value SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Fair Value Current state income taxes Current State and Local Tax Expense (Benefit) Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Amortized cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Debt Securities, Available-for-sale Debt Securities, Available-for-Sale [Table Text Block] Schedule of Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments [Table Text Block] Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Incurred claims and allocated loss adjustment expenses, net reinsurance Total incurred Short-Duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net Common stock, issued (in shares) Common Stock, Shares, Issued Retirement Plan Name [Domain] Retirement Plan Name [Domain] Entity [Domain] Entity [Domain] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Concentration risk, percentage Concentration Risk, Percentage Gross unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Amounts receivable from Genworth Accounts Receivable, after Allowance for Credit Loss Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Common stock, authorized (in shares) Common Stock, Shares Authorized Insurance [Abstract] Insurance [Abstract] Transfer into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Entity Voluntary Filers Entity Voluntary Filers Reinsurance, excess retention, amount reinsured, per policy Reinsurance, Excess Retention, Amount Reinsured, Per Policy Deferred income taxes Deferred Income Tax Expense (Benefit) Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Roll Forward] Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Roll Forward] Debt Securities, Available-for-sale, Unrealized Gain (Loss) Total other comprehensive income (loss) Other comprehensive income, net of taxes Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Investment Expenses Investment Expenses [Member] Investment Expenses Fair value, recurring Fair Value, Recurring [Member] 12 months or more, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Other liabilities Increase (Decrease) in Other Operating Liabilities Long-term borrowings Total Long-Term Debt Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Percent of match Defined Contribution Plan, Employer Matching Contribution, Percent of Match Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Investment Income [Table] Investment Income [Table] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Stock acquired, average cost per share (in usd per share) Shares Acquired, Average Cost Per Share Investment expenses and fees Investment Income, Investment Expense Document Annual Report Document Annual Report Summary of Net Investment Gains (Losses) Schedule of Realized Gain (Loss) [Table Text Block] Performance adjustment (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment Vested (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Schedule of Liability For Unpaid Claims And Claim Adjustments Expenses, By Segment Schedule of Liability For Unpaid Claims And Claim Adjustments Expenses, By Product [Table Text Block] Schedule of Liability For Unpaid Claims And Claim Adjustments Expenses, By Product Accounting Policies [Abstract] Liabilities: Liabilities [Abstract] Revenues: Revenues [Abstract] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Short-term investments Short-Term Investments PEO Name PEO Name Award Type [Domain] Award Type [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Deferred tax asset Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Additional paid-in capital Additional Paid-in Capital [Member] Employee benefits Retirement Benefits [Text Block] Accounting Pronouncements Adopted and Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Proceeds from sales of fixed maturity securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-Sale Losses incurred Policyholder Benefits and Claims Incurred, Net Assets: Components of Deferred Tax Assets [Abstract] Income taxes paid Income Taxes Paid Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Share-based Payment Arrangement, Activity Share-Based Payment Arrangement, Activity [Table Text Block] Total deferred income tax assets Deferred Tax Assets, Net of Valuation Allowance Performance adjustment (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment, Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment, Weighted-Average Grant Date Fair Value Reserve Adjustment [Axis] Reserve Adjustment [Axis] Reserve Adjustment Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Ceded Ceded Premiums Written Total state income taxes State and Local Income Tax Expense (Benefit), Continuing Operations Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Losses and expenses: Losses And Expenses [Abstract] Losses And Expenses Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Non-U.S. corporate Debt Security, Corporate, Non-US [Member] Auditor Firm ID Auditor Firm ID Effective rate Effective Income Tax Rate Reconciliation, Percent Total liabilities and equity Liabilities and Equity Premium as a percentage of net premium SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net Early Repayment of Senior Debt Early Repayment of Senior Debt Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Ceded Ceded Premiums Earned Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Investments Marketable Securities, Policy [Policy Text Block] Deferred acquisition costs Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost Energy Sector Energy Sector [Member] Dividends paid Payments of Dividends Internal models Valuation Technique, Internal Models [Member] Valuation Technique, Internal Models Information Technology and Administrative Services Information Technology And Administrative Services [Member] Information Technology And Administrative Services Percentage of payout, year nine Short-Duration Insurance Contracts, Historical Claims Duration, Year Nine Industry Sector [Axis] Industry Sector [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Measurement Input Type [Axis] Measurement Input Type [Axis] Individual: Individual [Axis] Fixed maturity securities, measurement input (in basis points) Debt Securities, Available-for-Sale, Measurement Input Accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Dividends [Domain] Dividends [Domain] Product and Service [Axis] Product and Service [Axis] Statement [Line Items] Statement [Line Items] Measurement Input Type [Domain] Measurement Input Type [Domain] Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] 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] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Percentage of payout, year ten Short-Duration Insurance Contracts, Historical Claims Duration, Year 10 Allowance for Credit Losses and Impairments on Available-For-Sale Securities Credit Loss, Financial Instrument [Policy Text Block] Schedule of Fair Value Assets Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Minimum Minimum [Member] Adoption Date Trading Arrangement Adoption Date Related Party Transactions [Abstract] Other reserves and run-off Run-off and Other Reserves Product [Member] Run-off and Other Reserves Product Amortization of DAC Deferred Policy Acquisition Costs, Amortization Expense Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Unrecorded Unconditional Purchase Obligation, Purchases Unrecorded Unconditional Purchase Obligation, Purchases 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] Statutory U.S. federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Asset, Held-in-Trust Asset, Held-in-Trust Long-Term Debt, Gross Long-term borrowings, gross Long-Term Debt, Gross Exercise Price Award Exercise Price Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Unearned Premiums Insurance Premiums Revenue Recognition, Policy [Policy Text Block] Arrangement Duration Trading Arrangement Duration Operating loss carryforwards Operating Loss Carryforwards Deposits Deposits [Member] Less than 12 months, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Total gains (losses) attributable to assets still held included in OCI Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI Domestic Tax Jurisdiction Domestic Tax Jurisdiction [Member] Total investments Investments Condensed Statement of Income Captions [Line Items] Condensed Statement of Income Captions [Line Items] Initial first layer retained loss Initial First Layer Retained Loss Initial First Layer Retained Loss Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Debt instrument, term (in years) Debt Instrument, Term All Individuals All Individuals [Member] U.S. corporate Debt Security, Corporate, US [Member] Income Tax Disclosure [Abstract] Change in short-term investments Payments for (Proceeds from) Short-Term Investments Statement of Stockholders' Equity [Abstract] 2015 Short-Duration Insurance Contracts, Accident Year 2015 [Member] Reinsurance Retention Policy [Line Items] Reinsurance Retention [Line Items] Reclassification adjustments to net investment (gains) losses, tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Gross unrealized gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Nonvested award cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Operating costs and expenses Operating Costs and Expenses Corporate Expenses Corporate Expenses [Member] Corporate Expenses Total IBNR liabilities including expected development on reported claims as of December 31, 2024 Short-Duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net Decrease in unearned premiums (Increase) Decrease in Unearned Premiums, Net Related Party [Domain] Related and Nonrelated Parties [Domain] Net unrealized gains (losses) on investments Unrealized Gain (Loss) on Investments Accrued Investment Income Accrued Investment Income [Policy Text Block] Accrued Investment Income Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Number of securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Other assets Increase (Decrease) in Other Operating Assets Deferred federal income taxes Deferred Federal Income Tax Expense (Benefit) Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Retained Aggregate Loss and Initial and Current Reinsurance Coverage Schedule of Retained Aggregate Loss and Reinsurance Coverage [Table Text Block] Schedule of Retained Aggregate Loss and Reinsurance Coverage Measure: Measure [Axis] Unearned premiums Unearned Premiums Asset Class [Domain] Asset Class [Domain] 12 months or more, Number of securities Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Entity Emerging Growth Company Entity Emerging Growth Company Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Income Tax, Examination [Table] Income Tax, Examination [Table] Liabilities, fair value Liabilities, Fair Value Disclosure Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Funded percent Multiemployer Plan, Funded Percent Multiemployer Plan, Funded Percent Equity Component [Domain] Equity Component [Domain] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Dividends Declared Dividends Declared [Table Text Block] Statement [Table] Statement [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] Counterparty Name [Axis] Counterparty Name [Axis] Summary of significant accounting policies Significant Accounting Policies [Text Block] Qualified And Nonqualified Plan Qualified And Nonqualified Plan [Member] Qualified And Nonqualified Plan Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Level 1 Fair Value, Inputs, Level 1 [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Statement of Cash Flows [Abstract] Senior Notes Senior Notes [Member] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statutory net income Statutory Accounting Practices, Statutory Net Income Amount Short-duration Insurance Contracts, Accident Year [Axis] Short-Duration Insurance Contracts, Accident Year [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrecorded Unconditional Purchase Obligation, Including Lease Not yet Commenced, Total Unrecorded Unconditional Purchase Obligation Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Total paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Income Taxes Income Tax Disclosure [Text Block] Repurchase of common stock Stock Repurchased and Retired During Period, Value 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Net Investment Income [Line Items] Net Investment Income [Line Items] Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted average discount rate, percent Operating Lease, Weighted Average Discount Rate, Percent 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) Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Credit Facility [Axis] Credit Facility [Axis] Vesting period Multiemployer Plan, Vesting Period Multiemployer Plan, Vesting Period Long-term borrowings Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reinsurance recoverable, beginning of year Reinsurance recoverable, beginning of year Reinsurance recoverable, end of year Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Deferred state income taxes Deferred State and Local Income Tax Expense (Benefit) Fair Value as of Grant Date Award Grant Date Fair Value Customer Concentration Risk Customer Concentration Risk [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Line of credit facility, accordion feature, increase limit Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Concentration Risk Type [Axis] Concentration Risk Type [Axis] Common stock, $0.01 par value; 600,000 shares authorized; 152,318 and 159,344 shares issued and outstanding as of December 31, 2024 and 2023, respectively Common stock Common Stock, Value, Issued Genworth 2012 Omnibus Incentive Plan Genworth 2012 Omnibus Incentive Plan [Member] Genworth 2012 Omnibus Incentive Plan Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Share-Based Payment Arrangement [Abstract] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] State income tax, net of federal income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Other Deferred Tax Assets, Other Multiemployer Plan [Line Items] Multiemployer Plan [Line Items] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Percentage of portfolio priced using third-party pricing services Debt Securities, Available-for-Sale, Excluding Accrued Interest, Percentage Of Portfolio Priced Using Third-Party Pricing Services Debt Securities, Available-for-Sale, Excluding Accrued Interest, Percentage Of Portfolio Priced Using Third-Party Pricing Services Total deferred income tax liabilities Deferred Tax Liabilities, Gross Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Basic (in usd per share) Earnings Per Share, Basic Cash, cash equivalents and short-term investments Cash and Cash Equivalents [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Fixed maturity securities available-for-sale: Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract] Nonqualified Plan Nonqualified Plan [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Dividends Payable [Line Items] Dividends Payable [Line Items] 2019 Short-Duration Insurance Contract, Accident Year 2019 [Member] Dividend equivalents (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Schedule of Fair Value Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Net unrealized losses on investment securities Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss Assumed Assumed Premiums Written Total revenues Revenues Revenues Comprehensive income: Partners' Capital, Comprehensive Income [Abstract] Share based compensation Share-Based Payment Arrangement [Text Block] Savings Plan Contribution One Savings Plan Contribution One [Member] Savings Plan Contribution One Entity Address, City or Town Entity Address, City or Town Proceeds from the issuance of long-term debt Proceeds from Issuance of Long-Term Debt Leases Lessee, Leases [Policy Text Block] Dividends [Axis] Dividends [Axis] Share-based payment arrangement, expense Share-Based Payment Arrangement, Expense Investments, Debt and Equity Securities [Abstract] Contingency reserve Statutory Accounting Practices, Statutory Contingency Reserve Statutory Accounting Practices, Statutory Contingency Reserve Unrecognized tax benefits penalties and interest Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Terminated (in shares) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Net premiums written Written premiums Premiums Written, Net 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] Income taxes Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), Tax Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), Tax Multiemployer plan, employer contribution, cost Multiemployer Plan, Employer Contribution, Cost Document Fiscal Year Focus Document Fiscal Year Focus Subtotal Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total Assets, Fair Value Disclosure Document Period End Date Document Period End Date Total lease payments Lessee, Operating Lease, Liability, to be Paid Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Percentage of payout, year one Short-Duration Insurance Contracts, Historical Claims Duration, Year One Asset Class [Axis] Asset Class [Axis] Insider Trading Arrangements [Line Items] Fixed maturity securities available-for-sale, amortized cost Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Document Transition Report Document Transition Report Losses incurred related to current accident year Current Year Claims and Claims Adjustment Expense Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Customer [Domain] Customer [Domain] Entity Current Reporting Status Entity Current Reporting Status Percentage of payout, year five Short-Duration Insurance Contracts, Historical Claims Duration, Year Five Schedule of Unrealized Losses on Investments Gain (Loss) on Securities [Table Text Block] Retained earnings Retained Earnings [Member] Amortization of debt issuance costs Amortization of Debt Issuance Costs Gross investment income before expenses and fees Gross Investment Income, Operating 6.5% Senior Notes, due 2025 Senior Notes, Due 2025 [Member] Senior Notes, Due 2025 Other operating income Other Operating Income Premiums Net premiums earned Premiums Earned, Net RSUs Restricted Stock Units (RSUs) [Member] SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table] SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Amounts reclassified from other comprehensive income (loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Purchases of fixed maturity securities available-for-sale Payments to Acquire Debt Securities, Available-for-Sale Company Selected Measure Name Company Selected Measure Name