Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement Statistical Measurement [Domain] Stock conversion ratio Redeemable Non Controlling Interest Exchange Agreement Stock Conversion Ratio Redeemable non controlling interest exchange agreement stock conversion ratio. vTv Therapeutics LLC V Tv L L C [Member] vTv LLC. Award Timing Predetermined Award Timing Predetermined [Flag] Related Party Transaction [Axis] Related Party Transaction [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Recently Issued Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Decrease in vTv Therapeutics Inc. stockholders' equity for sale of vTv Units as a result of common stock issuances Consolidation Changes Wholly Owned Subsidiary Parent Ownership Interest Changes Purchase Of Interest By Parent Consolidation changes wholly owned subsidiary parent ownership interest changes purchase of interest by parent. Net shares withheld for tax withholding related to the settlement of equity awards. Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net loss per share of vTv Therapeutics Inc. Class A common stock, basic (in usd per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related-Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Schedule Of Stock By Class [Table] Stock, Class of Stock [Table] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] MacAndrews & Forbes Incorporated Mac Andrews And Forbes Incorporated [Member] MacAndrews and Forbes Incorporated. Measurement Input Type Measurement Input Type [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Indirect research and development expense Indirect Research Development Expense Indirect Research Development Expense Type 2 Diabetes Type Two Diabetes [Member] Type 2 diabetes. Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Stock Option Common stock options granted under the Plan Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Organization Consolidation And Presentation Of Financial Statements [Line Items] Organization Consolidation And Presentation Of Financial Statements [Line Items] Organization consolidation and presentation of financial statements. Antidilutive Securities Antidilutive Securities [Axis] Total stockholders’ equity attributable to vTv Therapeutics Inc. Equity, Attributable to Parent Measurement Frequency Measurement Frequency [Axis] Insider Trading Policies and Procedures [Line Items] Total share-based compensation expense Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Letter Agreement Warrants and Other Warrants Letter Agreement Warrants And Other Warrants [Member] Letter agreement warrants. Reclass Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Reclass Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Reclass Issuance of Class A common stock and prefunded warrants, net offering costs (in shares) Stock Issued During Period, Shares, New Issues Current assets: Assets, Current [Abstract] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and stockholders’ equity Liabilities and Equity Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Net loss attributable to redeemable noncontrolling interest Temporary Equity, Net Income Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Conversion of Stock, Name Conversion of Stock, Name [Domain] Maximum Maximum [Member] General and administrative General and Administrative Expense [Member] Options exercisable (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Less: net loss attributable to noncontrolling interest Less: Net loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Accounting Policies [Abstract] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Loss before income taxes and noncontrolling interest Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Reclassification of noncontrolling interest to additional paid-in capital Noncontrolling Interest, Reclassification to Additional Paid-in-Capital Noncontrolling Interest, Reclassification to Additional Paid-in-Capital Novo License Agreement Novo License Agreement [Member] Novo license agreement. Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Measurement Input Type Measurement Input Type [Axis] Name Measure Name Redeemable Noncontrolling Interest Redeemable Noncontrolling Interests [Member] Redeemable noncontrolling interests. Schedule of Net Income Attributable to vTv Therapeutics Inc Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Schedule of Compensation Expense Related to Grants of Stock Options Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Current portion of operating lease liabilities Operating Lease, Liability, Current Class Of Stock [Line Items] Class of Stock [Line Items] Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Award Type Award Type [Axis] Contract liabilities, net of current portion Contract with Customer, Liability, Noncurrent Parent Company Parent Company [Member] Legal Entity Legal Entity [Axis] Total assets Assets Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Trading Symbol Trading Symbol Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Common stock warrants Warrant liability, related party Warrant [Member] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Awards outstanding, beginning balance (in shares) Awards outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 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] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Purchases / Issuance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Related Party Related Party [Member] Common stock, shares outstanding (in shares) Beginning balance, shares (in shares) Ending balance, shares (in shares) Common Stock, Shares, Outstanding Change in fair value of warrants Fair Value Adjustment of Warrants Document Information [Table] Document Information [Table] PEO PEO [Member] Interest income Investment Income, Interest Changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Issuance of common stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised 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] Accumulated Deficit Retained Earnings [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Total cash and cash equivalents, beginning of period Total cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax provision Income Tax Expense (Benefit) Class B Common Stock Common Class B [Member] Sale of Stock [Domain] Sale of Stock [Domain] Document Information [Line Items] Document Information [Line Items] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and Contingencies. Options vested and expected to vest (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Total vTv Therapeutics Inc Stockholders’ Equity (Deficit) Parent [Member] Net loss before noncontrolling interest Net loss before noncontrolling interest Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Liabilities: Liabilities, Fair Value Disclosure Percent of public float Sale of Stock, Maximum Securities To Be Sold, Percent Of Public Float Sale of Stock, Maximum Securities To Be Sold, Percent Of Public Float Aggregate offering price Sale Of Stock, Aggregate Offering Price Aggregate offering price. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other current assets Increase (Decrease) in Other Current Assets Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Amount of cash savings percentage Percentage Of Amount Of Cash Savings Percentage of amount of cash savings. Proceeds from issuance of private placement Proceeds from Issuance of Private Placement Proceeds from the exercise of stock options Proceeds from Stock Options Exercised City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Type 1 Diabetes Type One Diabetes [Member] Type 1 diabetes. All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] G42 Investments G42 Investments [Member] G42 Investments General and administrative General and Administrative Expense Unrecognized compensation cost related to non-vested share-based compensation arrangements Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Income Taxes [Table] Income Taxes [Table] Income taxes. Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Schedule Of Earnings Per Share [Line Items] Schedule Of Earnings Per Share [Line Items] Schedule Of Earnings Per Share [Line Items] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Preferred stock, par or stated value per share (in usd per share) Preferred Stock, Par or Stated Value Per Share Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation expense Depreciation Equity Components Equity Components [Axis] Change in redemption value of redeemable noncontrolling interest Change in redemption value of noncontrolling interest Noncontrolling Interest, Change in Redemption Value Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Entity Address, State or Province Entity Address, State or Province Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Related Party Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Individual: Individual [Axis] Other current assets Other Assets, Current Research and development Research and Development Expense [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Entity Entity [Domain] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus Research and Development Arrangement, Contract to Perform for Others, Type Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Project [Domain] Project [Domain] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Weighted average period to recognize unrecognized share-based compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Issuance of common stock upon exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Organization Consolidation And Presentation Of Financial Statements [Table] Organization Consolidation And Presentation Of Financial Statements [Table] Organization Consolidation And Presentation Of Financial Statements [Table] Number of days used to determine exchange value based on weighted average price of Class A common stock Period Used To Determine Exchange Value Based On Weighted Average Price Of Class Common Stock Period used to determine exchange value based on weighted average price of Class A common stock. Newsoara Biopharma Co Ltd Newsoara Biopharma Co Ltd [Member] Newsoara Biopharma Co Ltd. Segment Information Segment Reporting Disclosure [Text Block] Private Placement Pre-Funded Warrants Private Placement Pre-Funded Warrants [Member] Private Placement Pre-Funded Warrants Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Cadisegliatin Cadisegliatin [Member] Cadisegliatin Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Net loss attributable to noncontrolling interest Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest Weighted Average Weighted Average [Member] License fee received, term License Fee Received, Term License Fee Received, Term Expected volatility Measurement Input, Price Volatility [Member] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Stock Conversion Description Stock Conversion Description [Axis] Sale of stock, consideration received on transaction Sale of Stock, Consideration Received on Transaction 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] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Beginning Balance Ending Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Exercise price of warrants or rights (in usd per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Domain] M&F TTP Holdings LLC M F T T P Holdings L L C [Member] M&F TTP Holdings LLC. Share-Based Compensation Share-Based Payment Arrangement [Text Block] Assets Assets [Abstract] Nonrelated Party Nonrelated Party [Member] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Other Commitments Other Commitments [Axis] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Potential milestone payment Potential Milestone Payment Potential milestone payment. Stockholders’ equity: Equity, Attributable to Parent [Abstract] 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] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Research and development Total research and development expense Research and Development Expense Net shares withheld for tax withholding related to the settlement of equity awards (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Beginning balance Ending balance Redeemable Noncontrolling Interest, Equity, Carrying Amount Fair Value Of Assets And Liabilities Measured On Recurring Basis [Table] Fair Value Of Assets And Liabilities Measured On Recurring Basis [Table] Fair value of assets and liabilities measured on recurring basis table. Redeemable noncontrolling interest, equity, fair value Redeemable Noncontrolling Interest, Equity, Fair Value Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Collaborative Arrangements Collaborative Arrangement [Member] Other assets Increase (Decrease) in Other Noncurrent Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Options vested and expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Stock split conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Change from net loss attributable to vTv Therapeutics Inc. common shareholders and transfers to noncontrolling interest Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net Income Taxes [Line Items] Income Taxes [Line Items] Income taxes. Related Party Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] Fair value of assets and liabilities measured on recurring basis. Sale of Stock [Axis] Sale of Stock [Axis] Name Trading Arrangement, Individual Name Award Type Award Type [Domain] Noncontrolling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Inputs utilized in the valuation of warrants Warrants and Rights Outstanding, Measurement Input Compensation Amount Outstanding Recovery Compensation Amount Warrant liability, related party Warranty Liability Warranty Liability Percent of securities called by warrants Class of Warrant or Right, Percent of Securities Called by Warrants or Rights Class of Warrant or Right, Percent of Securities Called by Warrants or Rights Recovery of Erroneously Awarded Compensation Disclosure [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Financial Instruments Financial Instruments [Domain] Segments [Domain] Segments [Domain] Developmental and Regulatory Milestone Payment Developmental And Regulatory Milestone Payment [Member] Developmental and regulatory milestone payment. Income Statement Location Statement of Income Location, Balance [Axis] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Minimum Minimum [Member] Number of securities called by warrants or rights (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Repayment of notes payable Repayments of Notes Payable Company Selected Measure Name Company Selected Measure Name Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net loss attributable to common shareholders of vTv Therapeutics Inc., diluted Net Income (Loss) Available to Common Stockholders, Diluted All Executive Categories All Executive Categories [Member] Entity public float, threshold Entity Public Float, Threshold Entity Public Float, Threshold Common stock value Common Stock, Value, Issued Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other Indication Other Indication [Member] Other indication. Weighted average number of vTv Therapeutics Inc. Class A common stock, diluted (in shares) Weighted average vTv Therapeutics Inc. Class A common stock, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Percentage of non-voting economic interest of vTv Therapeutics Inc in vTv LLC Percentage Of Non Voting Economic Interest By Parent Percentage of non voting economic interest by parent. Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Noncontrolling Interest Noncontrolling Interest [Member] G2 Investments Purchase Agreement And Cogna Collaborative And License Agreement G2 Investments Purchase Agreement And Cogna Collaborative And License Agreement [Member] G2 Investments Purchase Agreement And Cogna Collaborative And License Agreement Document Transition Report Document Transition Report Minority Interest [Table] Noncontrolling Interest [Table] Underlying Securities Award Underlying Securities Amount Equity Component Equity Component [Domain] Document Period End Date Document Period End Date Project [Axis] Project [Axis] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Change in redemption value of redeemable noncontrolling interest Temporary Equity, Accretion to Redemption Value Other projects Other Projects [Member] Other Projects Income Taxes Income Tax Disclosure [Text Block] Class A Common Stock Common Class A [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Options exercisable, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Document Type Document Type Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Net Loss per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Exchange of Redeemable Non controlling Interest To Class A Common Stock Exchange Of Redeemable Non Controlling Interest To Class A Common Stock [Member] Exchange of redeemable non controlling interest to class A common stock. Revenue Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Non-qualified stock option awards expiration term Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Total current assets Assets, Current Statistical Measurement Statistical Measurement [Axis] 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] Schedule Of Earnings Per Share [Table] Schedule Of Earnings Per Share [Table] Schedule Of Earnings Per Share [Table] Sales-based Milestones Payment Sales Based Milestones Payment [Member] Sales-based milestones payment. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement License fee received License Fee Received License Fee Received Private Placement Private Placement [Member] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net loss attributable to vTv Therapeutics Inc. common shareholders Net loss attributable to common shareholders of vTv Therapeutics Inc., basic Net Income (Loss) Available to Common Stockholders, Basic Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current liabilities: Liabilities, Current [Abstract] Total operating expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Table] Net loss per share of vTv Therapeutics Inc. Class A common stock, diluted (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 Non-cash activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Percentage of non-voting economic interest of vTv Therapeutics Holdings LLC in vTv LLC Noncontrolling interest ownership percentage Percentage Of Non Voting Economic Interest Percentage of non voting economic interest. Shares sold (in shares) Sale of Stock, Number of Shares Issued in Transaction Earnings Per Share [Abstract] Earnings Per Share [Abstract] Description of Business and Basis of Presentation and Going Concern Business Description and Basis of Presentation [Text Block] Unaudited Interim Financial Information Unaudited Interim Financial Information Policy [Policy Text Block] Unaudited interim financial information policy. Proceeds from sale of Class A common stock and pre-funded warrants, net of offering costs Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants Schedule of Potentially Dilutive Securities not Included in Calculation of Diluted Net Loss per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Net Change in fair value included in earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Exercised (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Award Timing Disclosures [Line Items] Reportable Segment Reportable Segment [Member] Reportable Segment Granted (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Measurement Frequency Measurement Frequency [Domain] Stockholders' Equity (Deficit) Equity [Text Block] Share held by related party (in shares) Investment Owned, Balance, Shares Net loss attributable to vTv Therapeutics Inc. Net loss attributable to vTv Therapeutics Inc. Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Other Commitments Other Commitments [Domain] Other liabilities Increase (Decrease) in Other Operating Liabilities Non-qualified stock option awards vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Shares authorized (in shares) Preferred Stock, Shares Authorized Numerator: Net Income (Loss) Attributable to Parent [Abstract] Adoption Date Trading Arrangement Adoption Date Options vested and expected to vest, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] TD Cowen Sales Agreement TD Cowen Sales Agreement [Member] TD Cowen Sales Agreement Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating loss Operating Income (Loss) Consolidated Entities [Domain] Consolidated Entities [Domain] Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit) Financial Instrument Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock Class of Stock [Axis] 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] Other income (expense), net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Adjustments to reconcile net loss before noncontrolling interest to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Collaboration Agreements Collaborative Arrangement Disclosure [Text Block] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Weighted average grant date fair value of options granted (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Risk-free interest rate Measurement Input, Risk Free Interest Rate [Member] Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Schedule of the Conclusions Reached Regarding Fair Value Measurements Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Potentially dilutive securities not included in calculation of dilutive net loss per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] All Adjustments to Compensation All Adjustments to Compensation [Member] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Sale of stock, price per share (in usd per share) Sale of Stock, Price Per Share Sales / Repurchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Termination Date Trading Arrangement Termination Date Net cash (used in) provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Schedule of Stock Award Activity for the Period Share-Based Payment Arrangement, Option, Activity [Table Text Block] Weighted average number of vTv Therapeutics Inc. Class A common stock, basic (in shares) Weighted average vTv Therapeutics Inc. 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Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Research and Development Arrangement, Contract to Perform for Others, Type Research and Development Arrangement, Contract to Perform for Others, Type [Domain]