Change in proceeds of sales of investments available for sale receivable in period Noncash Investing and Financing Activities, Change in Proceeds of Sales of Investments Noncash Investing and Financing Activities, Change in Proceeds of Sales of Investments Change in insurance recoverable Change in insurance recoverable Increase (Decrease) in Reinsurance Recoverable LTV 60% to 75% LTV 60 to 75 Percent [Member] Loan-to-value (LTV) ratio from 60 to 75%. 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Peterson Trustee of the Peterson Family Trust dated April 14 1992 v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman Kim H. Peterson Trustee of the Peterson Family Trust dated April 14 1992 v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman [Member] Kim H. Peterson Trustee of the Peterson Family Trust dated April 14 1992 v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Liabilities, Total Gains (Losses) Included in AOCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Other securities which provide for periodic payments, Fair Value Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Change in statutory capital surplus increase (decrease) Statutory Accounting Practices, Permitted Practice, Change in Statutory Capital and Surplus Statutory Accounting Practices, Permitted Practice, Change in Statutory Capital and Surplus Asset Class [Domain] Asset Class [Domain] Minimum Minimum [Member] Due in one year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par or stated value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Escrow fees Escrow Fees [Member] Escrow Fees [Member] Investment, Name [Axis] Investment, Name [Axis] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Subsidiary dividends paid to non-controlling interest shareholders Payments of Ordinary Dividends, Noncontrolling Interest Trading Symbol Trading Symbol Entity File Number Entity File Number Agent commissions Insurance Commissions Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] DSI DSI [Member] DSI Balance at Beginning of Period Balance at End of Period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Derivative, strike price Derivative, Price Risk Option Strike Price Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table] Credit Facility [Domain] Credit Facility [Domain] Net earnings per share attributable to common shareholders, basic (in usd per share) Earnings Per Share, Basic Derivative investments Derivative Instruments [Member] Derivative Instruments [Member] Real estate technology Real Estate Technology [Member] Real Estate Technology [Member] Summary of Reserve for Title Claim Losses F&G Insurance Subsidiary Financial Information and Regulatory Matters Insurance Disclosure [Text Block] Fixed maturity securities, available-for-sale, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Plaintiffs claim losses amount Loss Contingency, Damages Sought, Value Other assets Other Asset Commitments [Member] Other Asset Commitments 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 Credit Suisse Credit Suisse [Member] Credit Suisse Ownership [Domain] Ownership [Domain] Entity Interactive Data Current Entity Interactive Data Current Ceded Ceded Premiums Earned Prepaid expenses and other assets Prepaid Expenses and Other Current Assets [Member] Changes in assets and liabilities, net of effects from acquisitions: Increase (Decrease) in Operating Capital [Abstract] Barclay's Bank Barclays Bank [Member] Barclay's Bank. Accrued interest receivable Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Georgia GEORGIA Available-for-sale Securities Available-for-Sale Securities [Member] Litigation Status [Domain] Litigation Status [Domain] Non-performing Nonperforming Financial Instruments [Member] Interest credited/index credits to contractholder account balances Increase (Decrease) Interest Credited to Policy Owner Account Increase (Decrease) Interest Credited to Policy Owner Account Purchases of treasury stock Payments for Repurchase of Common Stock Class of Stock [Axis] Class of Stock [Axis] Tax deferred property exchange income Tax Deferred Property Exchange [Member] Tax Deferred Property Exchange Carrying Value Investments Owned, VIE, Unconsolidated, Carrying Value Investments Owned, VIE, Unconsolidated, Carrying Value Document Quarterly Report Document Quarterly Report Florida FLORIDA FHLB collateral pledged Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Net realized/unrealized (losses) gains on securities Equity Securities, FV-NI, Realized Gain (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Scenario [Domain] Scenario [Domain] Life insurance premiums, insurance and investment product fees, and other Life Insurance Premiums, Insurance and Investment Product Fees, Other [Member] Life Insurance Premiums, Insurance and Investment Product Fees, Other Greater than 1.00 Greater Than One Point Zero Zero [Member] Greater Than One Point Zero Zero Reinsurance related embedded derivative, included in other assets Embedded Derivatives Assets in Reinsurance Contracts [Member] Embedded Derivatives Assets in Reinsurance Contracts 1.00 - 1.25 1.00x - 1.25x Greater Than One But Less Than One Point Two Five [Member] Greater Than One But Less Than One Point Two Five [Member] Fair Values, Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Reclassification adjustments for change in unrealized gains and losses included in net earnings, tax (benefit) expense Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Document Fiscal Year Focus Document Fiscal Year Focus Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Net (decrease) increase in reserve for title claim losses Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] California CALIFORNIA Loan subservicing revenue Fees and Commissions, Mortgage Banking and Servicing Loss Contingencies [Table] Loss Contingencies [Table] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Loans Segregated by Risk Rating Exposure Financing Receivable Credit Quality Indicators [Table Text Block] Non-cash lease costs Operating Lease, Expense Option cost Fair Value Input Option Cost Fair Value Input Option Cost 2021 2020 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Earnings before equity in earnings of unconsolidated affiliates Income (Loss) From Continuing Operations Before Minority Interest And Income (Loss) On Equity Method Investments, Net Of Income Tax Income (Loss) From Continuing Operations Before Minority Interest And Income (Loss) On Equity Method Investments, Net Of Income Tax Litigation Status [Axis] Litigation Status [Axis] Equity securities (NAV) Equity Securities without Readily Determinable Fair Value, Amount Wakefield Capital, LLC, Wakefield Investments, LLC, 2Budz Holding, LLC, Doug and Kristine Heidrich, and Jeff and Heidi Orr v. Chicago Title Co. and Chicago Title Ins. Co. Wakefield Capital, LLC, Wakefield Investments, LLC, 2Budz Holding, LLC, Doug and Kristine Heidrich, and Jeff and Heidi Orr v. Chicago Title Co. and Chicago Title Ins. Co. [Member] Wakefield Capital, LLC, Wakefield Investments, LLC, 2Budz Holding, LLC, Doug and Kristine Heidrich, and Jeff and Heidi Orr v. Chicago Title Co. and Chicago Title Ins. Co. Common stock, shares, outstanding (in shares) Common Stock, Shares, Outstanding Goodwill Goodwill Treasury stock (in shares) Treasury Stock, Shares Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Funds withheld for reinsurance liabilities Funds Held under Reinsurance Agreements, Liability Income tax expense Income tax expense (benefit) Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Deferred tax liability Deferred Income Tax Liabilities, Net Balance Sheet Location [Domain] Balance Sheet Location [Domain] Change in allowance for expected credit losses Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) Derivative liability Derivative Liability Total liability derivatives Derivative Liability, Subject to Master Netting Arrangement, before Offset Loss Contingencies [Line Items] Loss Contingencies [Line Items] Debt securities Debt Securities, Available-for-Sale, Measurement Input Total investments Investments FNF common stock, $0.0001 par value; authorized 600,000,000 shares as of June 30, 2022 and December 31, 2021; outstanding of 276,949,217 and 283,778,574 as of June 30, 2022 and December 31, 2021, respectively, and issued of 325,730,482 and 325,486,429 as of June 30, 2022 and December 31, 2021, respectively Common Stock, Value, Issued Net earnings per share from discontinued operations attributable to common shareholders (in usd per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Preferred securities Preferred Stock [Member] Deferred policy acquisition costs and deferred sales inducements Increase (Decrease) in Deferred Policy Acquisition Costs and Deferred Sales Inducements Increase (Decrease) in Deferred Policy Acquisition Costs and Deferred Sales Inducements Earnings per share Net Income Loss Per Common Share Attributable To Controlling Interest [Abstract] Net income (loss) per common share attributable to controlling interest. 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Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Other comprehensive earnings/loss - unrealized gain/loss on investments and other financial instruments OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Common stock, shares authorized (in shares) Common Stock, Shares Authorized Change in fair value of other derivatives and embedded derivatives Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Limited partnerships Limited Partnership [Member] Limited Partnership [Member] Corporates, Non-structured Hybrids, Municipal and Government securities: Corporates, Non-structured Hybrids, Municipal and Government securities: [Member] Corporates, Non-structured Hybrids, Municipal and Government Securities Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Commercial mortgage loans Commercial mortgages Commercial Mortgage Commercial Portfolio Segment [Member] Maximum Maximum [Member] Credit linked note Credit Linked Note [Member] Credit Linked Note [Member] Effects of Reinsurance [Table] Effects of Reinsurance [Table] Residential mortgage loans Residential Mortgage [Member] Investment in affiliate Investment in Affiliate, Measurement Input Investment in Affiliate, Measurement Input New York NEW YORK Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cash and cash equivalents, at June 30, 2022 and December 31, 2021 includes $586 and $480, respectively, of pledged cash related to secured trust deposits Cash and Cash Equivalents, at Carrying Value Performing Performing Financial Instruments [Member] Stockholders' Equity Stockholders' Equity, Total [Member] Mixed Use Warehouse [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Dividends Stockholders' Equity Note Disclosure [Text Block] New Jersey NEW JERSEY Net earnings from continuing operations Net earnings (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Future policy benefits Liability for Future Policy Benefit, before Reinsurance Purchases of investment securities Payments to Acquire Debt Securities, Available-for-Sale Mountain Mountain [Member] Mountain [Member] Other long-term investments Other Long-Term Investments Schedule of Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Term of contract, term two Derivative, Term of Contract, Term Two Derivative, Term of Contract, Term Two Other securities which provide for periodic payments, Amortized Cost Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Charges assessed to contractholders for mortality and admin Charges Assessed To Contract Holders For Mortality And Administration Mortality and expense charges and administrative fees. Net decrease in trade receivables Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Limited Partnerships Limited Partnerships [Member] Limited Partnerships Assets, Net transfer In (Out) of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Subsequent Event [Line Items] Subsequent Event [Line Items] Adjustment for net unrealized investment gains and losses Present Value of Future Insurance Profits, Unrealized Gain (Loss) on Investment Gross Unrealized Losses Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Segment Information Segment Reporting Disclosure [Text Block] Fixed maturity securities, available-for-sale securities, allowance for credit losses Allowance for Expected Credit Losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Volatility Measurement Input, Price Volatility [Member] Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Debt Security Category [Axis] Debt Security Category [Axis] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Gross Unrealized Losses, 12 months or longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Fair Value Total Estimated Fair Value Estimate of Fair Value Measurement [Member] Structured hybrids Structured Hybrids [Member] Structured hybrids. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Current year Current Year Claims and Claims Adjustment Expense Commercial mortgage loans Investments, Commercial Mortgage Loans, Fair Value Disclosure Fair value of the investment commercial mortgage loan portfolio Allowance % of Total Financing Receivable, Allowance for Credit Loss to Outstanding, Percent Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Net earnings per share from continuing operations attributable to common shareholders (in usd per share) Income (Loss) from Continuing Operations, Per Basic Share Equity securities Equity Securities, FV-NI, Measurement Input Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Provision for title insurance claim losses as a percentage of title insurance premiums Provision For Title Insurance Claims on Current Year Policies Provision For Title Insurance Claims on Current Year Policies Kim Funding, LLC, Kim H. Peterson, Joseph J. Cohen, and ABC Funding Strategies, LLC v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman Kim Funding, LLC, Kim H. Peterson, Joseph J. Cohen, and ABC Funding Strategies, LLC v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman [Member] Kim Funding, LLC, Kim H. Peterson, Joseph J. Cohen, and ABC Funding Strategies, LLC v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman Dividend to shareholders, pro rata percentage of common stock Dividend to Shareholders, Pro Rata Percentage of Common Stock Dividend to Shareholders, Pro Rata Percentage of Common Stock Unrealized gain on investments in unconsolidated affiliates Other comprehensive earnings - unrealized gain on investments in unconsolidated affiliates Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) On Equity Method Investments Arising During Period, Net Of Tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) On Equity Method Investments Arising During Period, Net Of Tax Change in NAV of limited partnerships, net Unrealized Gain (loss) in Net Asset Value of Limited Partnerships Unrealized Gain (loss) in Net Asset Value of Limited Partnerships Trade receivables Accounts Receivable, after Allowance for Credit Loss Notional Amount Derivative, Notional Amount Preferred stock, $0.0001 par value; authorized 50,000,000 shares; issued and outstanding, none Preferred Stock, Value, Issued Unlocking Deferred Policy Acquisition Costs and Present Value of Future Profits, Unlocking Adjustment Deferred Policy Acquisition Costs and Present Value of Future Profits, Unlocking Adjustment Assets, Total Gains (Losses) Included in AOCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Net change in income taxes Increase (Decrease) in Income Taxes Payable Number of Board of Directors on the litigation committee Number of Board of Directors Number of Board of Directors Changes in Fair Value of Financial Instruments - Assets Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Pending Litigation Pending Litigation [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Earnings from continuing operations before income taxes and equity in earnings of unconsolidated affiliates Earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Net amount recoverable Gain on Business Interruption Insurance Recovery Total fixed maturities Fixed Maturities [Member] Title premiums Premiums Written, Net Non-controlling Interest Noncontrolling Interest [Member] Pennsylvania PENNSYLVANIA Non-performance spread Fair Value Inputs Non Performance Spread Fair Value Inputs Non Performance Spread Total Deferred Policy Acquisition Costs and Present Value of Future Profits [Abstract] Related Party [Axis] Related Party [Axis] Investments, All Other Investments [Abstract] Investments, All Other Investments [Abstract] Wilton Reassurance Company Wilton Reassurance Company [Member] Wilton reassurance company. Diluted Earnings Per Share, Diluted [Abstract] Assets, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Collections of notes receivable Proceeds from Collection of Notes Receivable Level 2 Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Assets, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Change in future policy benefits Increase (Decrease) in Future Policy Benefit Reserves Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Revenue Recognition, Services, Real Estate Transactions Revenue Recognition, Services, Real Estate Real Estate Transactions [Policy Text Block] Revenue Recognition, Services, Real Estate Real Estate Transactions 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] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Commitment to Invest Commitment to Invest [Member] Commitment to Invest [Member] Residential mortgage loans Residential mortgages Residential Mortgage Residential Portfolio Segment [Member] Schedule of Distribution of CMLs, Gross Valuation by Property Type and Geographic Region Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Reserve for title claim losses Liability for Unpaid Claims and Claims Adjustment Expense, Net Third Party Valuation Third Party Valuation Technique [Member] Third Party Valuation Technique [Member] Provision for loan losses Financing Receivable, Credit Loss, Expense (Reversal) Foreign Governments Debt Security, Government, Non-US [Member] Net (purchases of) proceeds from sales and maturities of short-term investment securities Payments for (Proceeds from) Short-Term Investments F&G Reinsurance Reinsurance [Text Block] Collateral held Collateral Already Posted, Aggregate Fair Value Change in valuation of derivatives, equity and preferred securities, net Unrealized Gain (Loss) on Investments Direct title insurance premiums Insurance Contracts, Direct Title Insurance Premiums [Member] Insurance Contracts, Direct Title Insurance Premiums [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Total title claim loss provision Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Allowance for expected loan loss, percent Financing Receivable Allowance for Expected Credit Loss, Percent Financing Receivable Allowance for Expected Credit Loss, Percent Credit Facility [Axis] Credit Facility [Axis] Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates) OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Proceeds Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Equity [Abstract] Equity [Abstract] Subsequent Event [Table] Subsequent Event [Table] Total mortgage loans Total Mortgage Loans [Member] Total Mortgage Loans [Member] Entity Tax Identification Number Entity Tax Identification Number Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Schedule of Investments [Table] Schedule of Investments [Table] Reinsurance Disclosures [Abstract] Reinsurance Disclosures [Abstract] CalPrivate Bank v. Kim H. Peterson Trustee of the Peterson Family Trust dated April 14 1992 CalPrivate Bank v. Kim H. Peterson Trustee of the Peterson Family Trust dated April 14 1992 [Member] CalPrivate Bank v. Kim H. Peterson Trustee of the Peterson Family Trust dated April 14 1992 Stock-based compensation APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Schedule of Investment in Mortgage Loans by Loan to Value and Debt Service Coverage Ratios Schedule of Investment in Mortgage Loans by Loan to Value and Debt Service Coverage Ratios [Table Text Block] Tabular disclosure of investments in loans separated by loan to value (LTV) and debt service coverage ratios (DSCR). Change in funds withheld from reinsurers Increase (Decrease) in Reinsurance Payables Exposure to Credit Loss on Call Options Held Schedule Of Exposure To Credit Loss On Derivative Instrument Table [Table Text Block] Schedule of exposure to credit loss on derivative instrument. Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Swap rates Fair Value Inputs, Treasury Rates Fair Value Inputs, Treasury Rates Entity Central Index Key Entity Central Index Key Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Invested cash and short-term investments Invested Cash And Short Term Investments [Member] Invested cash and short-term investments. Measurement Input Type [Axis] Measurement Input Type [Axis] Entity [Domain] Entity [Domain] City Area Code City Area Code ASSETS Assets [Abstract] Net change in other assets and other liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Change in purchases of investments available for sale payable in period Noncash Investing and Financing Activities, Change in Purchases of Investments Noncash Investing and Financing Activities, Change in Purchases of Investments Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Less: Comprehensive earnings attributable to non-controlling interests Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Asset Class [Axis] Asset Class [Axis] Total financial liabilities at fair value Financial Liabilities Fair Value Disclosure Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Stock-based compensation cost Share-Based Payment Arrangement, Noncash Expense Additional investments in unconsolidated affiliates Payments to Acquire Equity Method Investments Equity in earnings of unconsolidated affiliates Equity in earnings (loss) of unconsolidated affiliates Income (Loss) from Equity Method Investments Susan Heller Fenley Separate Property Trust, Susan Heller Fenley Inherited Roth IRA, Shelley Lynn Tarditi Trust and ROJ, LLC v. Chicago Title Co., Chicago Title Ins. Co. et al Susan Heller Fenley Separate Property Trust, Susan Heller Fenley Inherited Roth IRA, Shelley Lynn Tarditi Trust and ROJ, LLC v. Chicago Title Co., Chicago Title Ins. Co., [Member] Susan Heller Fenley Separate Property Trust, Susan Heller Fenley Inherited Roth IRA, Shelley Lynn Tarditi Trust and ROJ, LLC v. Chicago Title Co., Chicago Title Ins. Co., Weighted Average Weighted Average [Member] Texas TEXAS Lease liabilities recognized in exchange for lease right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Gross losses Debt Securities, Available-for-Sale, Realized Loss Schedule of Residential Mortgage Loans by State Schedule of Residential Mortgage Loans by Geographic Location [Table Text Block] Schedule of Residential Mortgage Loans by Geographic Location Real Estate [Domain] Real Estate [Domain] Acquisitions and dispositions Payments to Acquire Businesses, Net of Dispositions Payments to Acquire Businesses, Net of Dispositions South Atlantic South Atlantic US [Member] South Atlantic US [Member] Due in one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Blackstone Wave Asset Holdco Blackstone Wave [Member] Blackstone Wave 2023 Present Value of Future Insurance Profits, Expected Amortization, Year One Increase (Decrease) 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allocation adjustments Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Purchase price allocation adjustments Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Purchase Price Allocation Adjustments Treasury stock repurchased Treasury Stock, Value, Acquired, Cost Method Net earnings attributable to Fidelity National Financial, Inc. common shareholders Net Income (Loss) Attributable to Parent 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 Fixed maturity securities, available-for-sale Debt Securities [Member] Deferrals Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Addition Subsequent Event Type [Axis] Subsequent Event Type [Axis] ServiceLink, excluding title premiums, escrow fees, and subservicing fees ServiceLink, Excluding Title Premiums, Escrow Fees And Subservicing Fees [Member] ServiceLink, Excluding Title Premiums, Escrow Fees And Subservicing Fees [Member] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Additions to property and equipment and capitalized software Payments To Acquire Property, Plant, and Equipment and Software Payments To Acquire Property, Plant, and Equipment and Software Scenario [Axis] Scenario [Axis] Total financial assets at fair value Assets, fair value Assets, Fair Value Disclosure Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] New England New England [Member] New England [Member] Interest Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Amortization Expense, Accrued Interest Municipals US States and Political Subdivisions Debt Securities [Member] Supplemental Cash Flow Elements 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Contractholder funds Contract Holder Funds [Member] Available-for-sale embedded derivative Available For Sale Embedded Derivatives [Member] Available-for-sale embedded derivatives. Accumulated other comprehensive (loss) earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Trade and notes receivables, net of allowance for credit losses of $34 and $32 at June 30, 2022 and December 31, 2021, respectively Trade and notes receivables, net of allowance Accounts and Financing Receivable, after Allowance for Credit Loss Contractholder funds Policyholder Account Balance Income taxes Income Taxes Paid, Net Revenue recognized Contract with Customer, Liability, Revenue Recognized Entity Small Business Entity Small Business Term of contract, term four Derivative, Term of Contract, Term Four Derivative, Term of Contract, Term Four Measurement Basis [Axis] Measurement Basis [Axis] Other Commitments [Table] Other Commitments [Table] Cash dividend per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Revenues: Revenues [Abstract] Subsidiary dividends declared to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Net Premiums Earned, Net Percentage of total investments Residential Mortgage Receivable, Percentage of Total Percentage of the total residential loan portfolio Schedules of Investment Concentrations Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Debt-to-Value [Axis] Debt-to-Value [Axis] Interest accrual rate utilized to calculate accretion of interest Value of Business Acquired, Assumption, Interest Rate to Calculate Accretion on Intangible Asset Value of Business Acquired, Assumption, Interest Rate to Calculate Accretion on Intangible Asset Whole loans Whole Loans [Member] Whole Loans Municipals Municipals [Member] Municipals. Other long-term investments Other Assets, Fair Value Disclosure Realized (losses) gains on certain derivative instruments Gain (Loss) on Sale of Derivatives Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments, Excluding Discontinued Operations Income (Loss) from Equity Method Investments, Excluding Discontinued Operations Distributions from unconsolidated affiliates, return on investment Proceeds from Equity Method Investment, Distribution Ceded Credit Risk [Table] Ceded Credit Risk [Table] LTV Less Than 50 % LTV Less Than 50 Percent [Member] Loan-to-value (LTV) ratio less than 50%. CalPrivate Bank v. Chicago Title Co. and Chicago Title Ins. Co. CalPrivate Bank v. Chicago Title Co. and Chicago Title Ins. Co. [Member] CalPrivate Bank v. Chicago Title Co. and Chicago Title Ins. Co. Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] U.S. Government US Government Agencies Debt Securities [Member] Lease liabilities Operating Lease, Liability Additional investment in consolidated subsidiaries Payments for Proceeds From Investment in Consolidated Subsidiaries Payments for Proceeds From Investment in Consolidated Subsidiaries Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Banc of California, National Association v. Laurie Peterson Banc of California, National Association v. Laurie Peterson [Member] Banc of California, National Association v. Laurie Peterson Change in fair value of reinsurance related embedded derivatives Change in fair value of derivatives Derivative, Gain (Loss) on Derivative, Net Term of contract, term one Derivative, Term of Contract, Term One Derivative, Term of Contract, Term One Laurie Peterson v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman Laurie Peterson v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman, [Member] Laurie Peterson v. Chicago Title Co., Chicago Title Ins. Co., Thomas Schwiebert, Adelle Ducharme, and Betty Elixman, Matter of FGL Holdings Matter of FGL Holdings [Member] Matter of FGL Holdings Aggregate consideration received Sale of Stock, Consideration Received on Transaction Financing Receivable Credit Quality Indicator Prior Year [Abstract] Financing Receivable Credit Quality Indicator Prior Year [Abstract] Financing Receivable Credit Quality Indicator Prior Year Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Hedging Designation [Axis] Hedging Designation [Axis] Entity Filer Category Entity Filer Category Morgan Stanley Morgan Stanley [Member] Morgan Stanley. United States UNITED STATES Investments measured under equity method or NAV expedient Investments Measured Under Equity Method Or Net Asset Value Expedient Investments Measured Under Equity Method Or Net Asset Value Expedient Liabilities Liabilities, Fair Value Disclosure [Abstract] Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Security Exchange Name Security Exchange Name Available-for-sale securities Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Revenue from contract with customer Revenue from Contract with Customer, Excluding Assessed Tax Canadian Imperial Bank of Commerce Canadian Imperial Bank of Commerce [Member] Canadian Imperial Bank of Commerce [Member] Cash and Cash Equivalents Cash and Cash Equivalents [Member] Prepaid expenses and other assets Prepaid Expense and Other Assets Cover [Abstract] Cover [Abstract] 2022 2021 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Revenue Recognition Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Call options Call Option [Member] Claim loss provision related to: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Realized (losses) gains on derivatives and embedded derivatives Change In Fair Value Derivatives, Including Other Derivatives Change In Fair Value Derivatives, Including Other Derivatives Investments [Domain] Investments [Domain] Forecast Forecast [Member] Total liabilities and equity Liabilities and Equity Current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Residential mortgage loans Investments, Residential Mortgage Loans, Fair Value Disclosure Fair value of the investment residential mortgage loan portfolio Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Limited partnerships Equity Method Investments [Member] Gross gains Debt Securities, Available-for-Sale, Realized Gain Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Net earnings per share attributable to common shareholders, diluted (in usd per share) Earnings Per Share, Diluted Proceeds from sales of property and equipment Proceeds from Sale of Property, Plant, and Equipment Ownership percentage by parent Noncontrolling Interest, Ownership Percentage by Parent Consolidation Items [Axis] Consolidation Items [Axis] Amortized Cost Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Equity securities Equity Securities [Member] Surrender rates Fair Value Inputs Surrender Rates Fair Value Inputs Surrender Rates Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Corporates Corporate Debt Securities [Member] Investment expense Investment Income, Investment Expense Net earnings from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Total asset derivatives Fair Value Derivative Asset, Subject to Master Netting Arrangement, before Offset Entity Address, Address Line One Entity Address, Address Line One Total expenses Benefits, Losses and Expenses Jade22 Jade22 [Member] Jade22 Deferred revenue (contract liabilities) Contract with Customer, Liability Product and Service [Axis] Product and Service [Axis] Class of Stock [Domain] Class of Stock [Domain] Interest expense Interest Expense Fixed maturity securities available-for-sale: Debt Securities, Available-for-Sale [Abstract] Debt-to-Value [Domain] Debt-to-Value [Domain] Gross investment income Gross Investment Income, Operating Student Housing Student Housing [Member] Student Housing Other long-term investments Other Long-Term Investments [Member] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Merrill Lynch Merrill Lynch [Member] Merrill Lynch [Member] Revenue from Contract with Customer [Abstract] Subtotal, Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Fidelity National Financial Inc. Fidelity National Financial Inc. [Member] Fidelity National Financial Inc. DAC Dac [Member] DAC. 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