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Arrangement, Increase for Cost Recognition Less: Treasury stock, 49,709,331 and 48,221,655 shares as of March 31, 2026 and December 31, 2025, respectively, at cost Treasury Stock, Value Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax 2027 Long-Term Debt, Maturity, Year One Segments [Domain] Segments [Domain] Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Shares subject to possible redemption (in shares) Option Indexed to Issuer's Equity, Indexed Shares Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Acquired equity interests in acquiree, percentage Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Company Selected Measure Name Company Selected Measure Name 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Transaction [Table] Net loss per share (in usd per share) Net loss per share (in usd per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] FNF Revolver Corporate Revolver Note [Member] Corporate Revolver Note [Member] Sale of stock (in shares) Sale of Stock, Number of Shares Issued in Transaction Treasury shares (in shares) Beginning balance, Treasury Stock (in shares) Ending balance, Treasury Stock (in shares) Treasury Stock, Common, Shares Earnings per share Earnings Per Share [Abstract] Termination Fees Expense Termination Fees Expenses [Member] Termination Fees Expenses Consolidation Items [Domain] Consolidation Items [Domain] Total other (expense) income Nonoperating Income (Expense) Parent ownership percentage Subsidiary, Ownership Percentage, Parent Distributions from investments in unconsolidated affiliates Proceeds from Equity Method Investment, Distribution, Return of Capital Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Net loss from discontinued operations, net of tax - see Note J Net loss from discontinued operations Net loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Option Indexed to Issuer's Equity [Axis] Option Indexed to Issuer's Equity [Axis] Gross profit Gross Profit Net loss from discontinued operations - see Note J Income (Loss) From Equity Method Investment, Discontinued Operations Income (Loss) From Equity Method Investment, Discontinued Operations Other activity in non-controlling interests Stockholders' Equity, Other 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Tax Other Comprehensive Income Loss Reclassification Adjustment For Net Unrealized Gains Losses On Unconsolidated Affiliates, Net Of Tax, Include Net Earnings. 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Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net decrease in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Other operating revenue Total other operating revenue Other Operating Revenue [Member] Total Other Operating Revenue [Member]