Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Schedule of Intangible Assets Intangible Asset and Goodwill [Table Text Block] Trading Arrangement: Trading Arrangement [Axis] Schedule of Other Assets Schedule of Other Assets, Noncurrent [Table Text Block] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Payments under tax receivable agreements Payments Under Tax Receivable Agreements Payments Under Tax Receivable Agreements Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Net income attributable to Clear Secure, Inc. used to calculate net income per common share, diluted Net Income (Loss) Available to Common Stockholders, Diluted Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Indefinite-Lived Intangible Assets [Abstract] Indefinite-Lived Intangible Assets [Abstract] Indefinite-Lived Intangible Assets Financial Instrument [Axis] Financial Instrument [Axis] Number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Segment Reporting [Abstract] Common stock Common Stock, Value, Issued Schedule of Activity Related to the RSAs Associated With Compensation Arrangements Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Payment of taxes on net settled stock-based awards Payment, Tax Withholding, Share-Based Payment Arrangement Accrued compensation and benefits Employee-related Liabilities, Current Other long-term assets Other Assets, Miscellaneous, Noncurrent Award requisite service period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Line of credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Proceeds from divestiture Proceeds from Divestiture of Businesses Add: reallocation of net income to Clear Secure, Inc. to reflect dilutive impact Dilutive Securities, Effect on Basic Earnings Per Share Amendment Flag Amendment Flag Current liabilities: Accrued Liabilities Liabilities, Current [Abstract] Conversion of stock, shares converted Conversion of Stock, Shares Converted Average price paid per share (in USD per share) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Amortization expense Amortization Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Founder PSUs Performance Restricted Stock Units (PSUs) [Member] Performance Restricted Stock Units (PSUs) Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Par value (in USD per share) Common Stock, Par or Stated Value Per Share Other Long Term Liabilities Liabilities, Noncurrent [Abstract] Cash and Cash Equivalents [Abstract] Intangible assets, net Intangible assets, net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Unvested balance, beginning of period (in shares) Unvested balance, end of period (in shares) Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Weighted-average shares of common stock outstanding, basic (in shares) Weighted-average number of shares outstanding used to calculate net income per common share, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Expected to vest within 1 year Share-Based Payment Arrangement, Tranche One [Member] Retirement Benefits [Abstract] Premium amortization and (discount accretion), net on marketable securities Accretion (Amortization) of Discounts and Premiums, Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Acquired intangibles - customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town O 2025 Q1 Dividends O 2025 Q1 Dividends [Member] O 2025 Q1 Dividends Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net income attributable to Clear Secure, Inc. used to calculate net income per common share, basic Net Income (Loss) Available to Common Stockholders, Basic Payment of dividend Payments of Ordinary Dividends Less: accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Sublease income Sublease Income Level 2 Fair Value, Inputs, Level 2 [Member] Other income (expense): Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Total other comprehensive income (loss) Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Acquired software Purchased Software [Member] Purchased Software Dividends [Domain] Dividends [Domain] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Issuance of shares (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Capitalized equity-based compensation Share-Based Payment Arrangement, Amount Capitalized Prepaid software licenses Prepaid Software Licenses, Current Prepaid Software Licenses, Current Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Non-controlling Interest Noncontrolling Interest [Member] Amortization of revolver loan costs Amortization of Debt Issuance Costs Discretionary contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Marketing expenditures Capital Addition Purchase Commitments [Member] Property and Equipment, net Property, Plant, and Equipment [Text Block] Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash (used in) provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Basic: Earnings Per Share, Basic [Abstract] Stockholder's Equity Equity [Text Block] Security Exchange Name Security Exchange Name Debt instrument term (in years) Debt Instrument, Term Treasury stock at cost, 0 shares as of June 30, 2026 and December 31, 2025 Treasury Stock, Common, Value Lessee Disclosure [Abstract] Fair value of RSUs vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Class B Common Stock par value $0.00001 per share (the “Class B Common Stock”) Class B Common Class B [Member] Shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Lease liability Operating Lease, Liability, Current Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Schedule of Property and Equipment Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Net Income per Common Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Net income per share of Class A Common Stock and Class B Common Stock (Note 14) Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Accumulated other comprehensive income (loss) AOCI Including Portion Attributable to Noncontrolling Interest [Member] Percent increase in authorized shares Share-based Compensation Arrangement by Share-based Payment Award, Percent Increase in Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Percent Increase in Authorized Shares Indefinite lived intangible assets Intangible Asset, Excluding Goodwill, Indefinite-Lived Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment 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] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Sale of Stock [Domain] Sale of Stock [Domain] O 2025 Q2 Dividends O 2025 Q2 Dividends [Member] O 2025 Q2 Dividends Purchases of marketable securities Payments to Acquire Debt Securities, Available-for-Sale Income Tax Disclosure [Abstract] Non-controlling Interest Exchange Non-controlling Interest Exchange [Member] Non-controlling Interest Exchange Unrealized gain (loss) on fair value of marketable securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Diluted: Earnings Per Share, Diluted [Abstract] Alclear Holdings LLC Alclear Holdings LLC [Member] Alclear Holdings LLC Purchase of strategic investment Payments to Acquire Other Investments Long-term purchase commitment, amount Long-Term Purchase Commitment, Amount Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Credit Facility [Domain] Credit Facility [Domain] Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted-average shares of common stock outstanding, diluted (in shares) Weighted-average number of shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Depreciation Period in Years Property, Plant, and Equipment, Useful Life Schedule of Prepaid Expenses and Other Current Asset Schedule of Other Current Assets [Table Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent U.S. Treasuries US Treasury Securities [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revenue from Contract with Customer [Abstract] Effect of dilutive shares (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Percent of savings for the company Tax Receivable Agreement, Percent of Savings For The Company Tax Receivable Agreement, Percent of Savings For The Company Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Equity-based compensation expense, net of forfeitures APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Internally developed software Software, Internally Developed [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Unvested balance, beginning of period (in USD per share) Unvested balance, end of period (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Repurchase and retirement of Class A Common Stock Repurchase and retirement of equity Repurchase and retirement of Class A Common Stock Stock Repurchased and Retired During Period, Value Operating lease liabilities Increase (Decrease) in Operating Lease Liability Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Commitment fee amount, line of credit Line of Credit Facility, Commitment Fee Amount Depreciation of property and equipment Depreciation Credit Agreement April 2021 Credit Agreement April 2021 [Member] Credit Agreement April 2021 Vesting [Domain] Vesting [Domain] Plan Name [Domain] Plan Name [Domain] Scenario [Domain] Scenario [Domain] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Asset impairment charges Tangible Asset Impairment Charges Sales and marketing Selling and Marketing Expense Right of use asset, net Operating Lease, Right-of-Use Asset Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] 2030 Contractual Obligation, to be Paid, Year Four Schedule of Calculation of Basic and Diluted Net Income Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Information Segment Reporting [Text Block] Long-term line of credit Long-Term Line of Credit Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Net increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Exchange rate effect on cash and cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Restricted cash Restricted Cash and Cash Equivalent Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest 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] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Shares authorized (in shares) Common Stock, Shares Authorized Weighted Average Useful Life in Years Intangible Asset, Finite-Lived, Useful Life Exercise Price Award Exercise Price Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Change in Contract with Customer, Liability [Roll Forward] Change in Contract with Customer, Liability [Roll Forward] Change in Contract with Customer, Liability Document Quarterly Report Document Quarterly Report Long-term purchase commitment, period Long-Term Purchase Commitment, Period 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] Sales of marketable securities Proceeds from Sale of Debt Securities, Available-for-Sale Scenario [Axis] Scenario [Axis] Total Contractual Obligation Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Schedule of Future Minimum Payments Contractual Obligation, Fiscal Year Maturity [Table Text Block] Schedule of Marketable Securities Marketable Securities [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Payment of special dividend Payment Of Special Dividend To Common Share Holders Payment Of Special Dividend To Common Share Holders Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Refund liability Contract with Customer, Refund Liability Thereafter Contractual Obligation, to be Paid, after Year Four Contractual Obligation, to be Paid, after Year Four Adoption Date Trading Arrangement Adoption Date Number of retail location, TSA precheck enrollment provided by clear Number Of Retail Location, TSA PreCheck Enrollment Provided By Clear Number Of Retail Location, TSA PreCheck Enrollment Provided By Clear Total stockholders’ equity attributable to Clear Secure, Inc. Equity, Attributable to Parent Prepaid Expenses and Other Current Assets Other Current Assets [Text Block] Prepaid insurance costs Prepaid Insurance Schedule of Unvested Restricted Stock Units Expected Vesting Period Schedule of Unvested Restricted Stock Units Expected Vesting Period [Table Text Block] Schedule of Unvested Restricted Stock Units Expected Vesting Period Special Dividends Adjustments to Additional Paid in Capital, Special Dividend Distribution Adjustments to Additional Paid in Capital, Special Dividend Distribution Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Accounting Policies [Abstract] Distributions to members Payments of Capital Distribution Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Accrued Liabilities and Other Long Term Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Capitalized costs associated with internally developed software Property, Plant, and Equipment, before Accumulated Depreciation, Addition Prepaid expenses and other current assets Total Prepaid Expense and Other Assets, Current Deferred income tax Deferred Income Tax Expense (Benefit) Patents Patents [Member] Maximum percentage of outstanding stock Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum Interest income, net Interest Income (Expense), Nonoperating Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Dilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of operating segments Number of Operating Segments RSU’s RSUs Restricted Stock Units (RSUs) [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Entity Central Index Key Entity Central Index Key Less: accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Equity [Abstract] 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] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation S 2025 Q1 Dividends S 2025 Q1 Dividends [Member] S 2025 Q1 Dividends Income Statement [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Prepaid revenue share fee Increase (Decrease) in Prepaid Revenue Share Fee, Current Increase (Decrease) in Prepaid Revenue Share Fee, Current Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Operating expenses: Operating Expenses [Abstract] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Marketing expense Marketing Expense Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] Noncash lease expense Operating Lease, Right-of-Use Asset, Periodic Reduction Name Forgone Recovery, Individual Name Period for recognition (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Non-GAAP Measure Description Non-GAAP Measure Description [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] Statement [Line Items] Statement [Line Items] Total assets Assets Strategic investment Equity Securities without Readily Determinable Fair Value, Amount, Noncurrent Equity Securities without Readily Determinable Fair Value, Amount, Noncurrent Schedule of Compensation Expense Related to the RSAs Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Tax Receivable Agreement and related changes to deferred tax assets associated with adjustments in tax basis Adjustments To Additional Paid In Capital, Deferred Tax Receivable Agreement Adjustment Adjustments To Additional Paid In Capital, Deferred Tax Receivable Agreement Adjustment Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Incentive Plans Share-Based Payment Arrangement [Text Block] Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-Term Purchase Commitment, Category of Item Purchased [Domain] 2026 Contractual Obligation, to be Paid, Remainder of Fiscal Year Issuance of stock, net of costs (in shares) Stock Issued During Period, Shares, New Issues PEO PEO [Member] Price volatility measurement period (in days) Share-based Compensation Arrangement by Share-based Payment Award, Volatility Price, Measurement Period Share-based Compensation Arrangement by Share-based Payment Award, Volatility Price, Measurement Period Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] 2028 Contractual Obligation, to be Paid, Year Two Compensation expense Share-Based Payment Arrangement, Expense Tax receivable liabilities Tax Receivable Agreement, Liabilities Tax Receivable Agreement, Liabilities Repurchase and retirement of Class A Common Stock (in shares) Repurchased and retirement of equity (in shares) Stock Repurchased and Retired During Period, Shares Other long term liabilities Total Other Liabilities, Noncurrent Goodwill Goodwill Dennis Liu [Member] Dennis Liu Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Continuous unrealized loss position from marketable securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Granted (in USD 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 Class C Common Stock par value $0.00001 per share (the “Class C Common Stock”) Class C Common Class C [Member] Due within 1 year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Subsequent Event Type [Domain] Subsequent Event Type [Domain] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Lease liability Operating Lease, Liability, Noncurrent Retained earnings Retained Earnings [Member] Revolving credit facility Revolving Credit Facility [Member] Money market funds measured at NAV Money Market Funds [Member] Forfeited (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Tax distribution to members Tax Distribution To Members Tax Distribution To Members Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Debt issuance costs Payments of Debt Issuance Costs Corporate bonds Corporate Debt Securities [Member] Net income per common share, diluted (in USD per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Amortization of intangible assets Intangible Asset, Finite-Lived, Amortization Expense Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Ownership [Domain] Ownership [Domain] Research and development Research and Development Expense Adjustments to reconcile net income to net cash provided from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] S 2026 Q1 Dividends S 2026 Q1 Dividends [Member] S 2026 Q1 Dividends Long-term Purchase Commitment [Line Items] Long-Term Purchase Commitment [Line Items] Share-Based Payment Arrangement [Abstract] Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Property and equipment, net Total property and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Financial Instruments [Domain] Financial Instruments [Domain] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Intangible Assets, net Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Purchase of fixed assets with accrued liabilities Capital Expenditures Incurred but Not yet Paid, Accrued Liabilities Capital Expenditures Incurred but Not yet Paid, Accrued Liabilities Less: comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Total intangible assets, cost Intangible Asset, Excluding Goodwill, before Accumulated Amortization Revenue Revenue from Contract with Customer [Text Block] O 2026 Q2 Dividends O 2026 Q2 Dividends [Member] O 2026 Q2 Dividends Revenue recognized included in opening balance Contract​ With​ Customer​ Liability, ​Revenue​ Recognized Included In Opening Balance Contract​ With​ Customer​ Liability, ​Revenue​ Recognized Included In Opening Balance Construction in progress Construction in Progress [Member] Sale of Stock [Axis] Sale of Stock [Axis] Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Schedule of Dividends Declared Dividends Declared [Table Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Gain on divestiture of a business Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Other long term liabilities Other Liabilities and Deferred Revenue, Noncurrent Dividends Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings 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] Dividends declared (in USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Net share settlements of stock-based awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Schedule of Contractual Maturities of Investments Investments Classified by Contractual Maturity Date [Table Text Block] Distribution to members Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Impairment of strategic investment Asset, Impairment Loss Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Other Assets Other Assets Disclosure [Text Block] Treasury stock (in shares) Beginning balance, treasury stock (in shares) Ending balance , treasury stock (in shares) Treasury Stock, Common, Shares Continuous unrealized loss for 12 months or longer value. Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Marketable securities Debt Securities, Available-for-Sale, Current Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Class of Stock [Line Items] Class of Stock [Line Items] Class A Common Stock par value $0.00001 per share (the “Class A Common Stock”) Class A Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Less: net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income attributable to Clear Secure, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Shares withheld for tax withholding obligation (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Total Other Assets, Noncurrent Document Type Document Type 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] Accrued liabilities Total Accrued Liabilities, Current Impairment of strategic investment Other Asset Impairment Charges Fair Value as of Grant Date Award Grant Date Fair Value Basis of Presentation and Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Impairment of intangible assets Intangible Asset, Excluding Goodwill, Impairment Loss Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income before tax Pretax income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (Note 16) Commitments and Contingencies Finite-lived intangible assets Intangible Asset, Finite-Lived, before Accumulated Amortization Schedule of Other Long Term Liabilities Other Noncurrent Liabilities [Table Text Block] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Total property and equipment, cost Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Coronavirus aid, relief, and economic security act retention credit Coronavirus Aid, Relief, And Economic Security Act Funds Receivable, Non-Current Coronavirus Aid, Relief, And Economic Security Act Funds Receivable, Non-Current Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Award vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Furniture and fixtures Furniture and Fixtures [Member] Liabilities and stockholders' equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Recognition of deferred revenue Contract​ With​ Customer​ Liability, ​Revenue​ Recognized ​Including​ Opening ​Balance Contract​ With​ Customer​ Liability, ​Revenue​ Recognized ​Including​ Opening ​Balance Acquired intangibles - brand names Trade Names [Member] 2029 Contractual Obligation, to be Paid, Year Three Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Tax receivable agreement liability - short term Long-Term Tax Receivable Agreement Liability, Noncurrent Long-Term Tax Receivable Agreement Liability, Noncurrent Fair Value Measurements Fair Value Disclosures [Text Block] Due within 2 years Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, Year Two Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, Year Two Ownership percentage Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Accrued and other long term liabilities Increase (Decrease) in Accrued Liabilities Leasehold improvements Leasehold Improvements [Member] Repurchase of Class A Common Stock Payments for Repurchase of Equity Balance as of January 1 Balance as of June 30 Contract with Customer, Liability Net Asset Value (NAV) Fair Value Measured at Net Asset Value Per Share [Member] Class D Common Stock par value $0.00001 per share (the “Class D Common Stock”) Class D Common Class D [Member] Common Class D Income taxes paid Income Tax Paid, before Refund Received Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Number of airports Number Of Airports Number Of Airports Credit Agreement November 2024 Credit Agreement November 2024 [Member] Credit Agreement November 2024 Cash, cash equivalents, and restricted cash, beginning of period Cash, cash equivalents, and restricted cash, end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accounts payable Increase (Decrease) in Accounts Payable Other accrued liabilities Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Equity-based compensation Share-Based Payment Arrangement, Noncash Expense Leases Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Net income per common share, basic (in USD per share) Earnings Per Share, Basic Deferred revenue Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Bank Time Deposits Bank Time Deposits [Member] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Restricted cash Restricted Cash, Noncurrent 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Total marketable securities Fair Value Debt Securities, Available-for-Sale Expected volatility rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Description of Business and Recent Accounting Developments Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] 2021 Omnibus Incentive Plan 2021 Omnibus Incentive Plan [Member] 2021 Omnibus Incentive Plan Equity Awards Adjustments Equity Awards Adjustments [Member] Percent of savings for holders Tax Receivable Agreement, Percent of Savings For Holders Tax Receivable Agreement, Percent of Savings For Holders Total liabilities and stockholders’ equity Liabilities and Equity Purchase of fixed assets with accounts payable Capital Expenditures Incurred but Not yet Paid, Accounts Payable Capital Expenditures Incurred but Not yet Paid, Accounts Payable Employee Stock Option Share-Based Payment Arrangement, Option [Member] Non-controlling interests Equity, Attributable to Noncontrolling Interest Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Additional paid-in capital Additional Paid in Capital Other income (expense), net Other Nonoperating Income (Expense) Debt Long-Term Debt [Text Block] Total stockholders’ equity attributable to Clear Secure, Inc. Parent [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Conversion ratio Common Stock, Conversion Ratio Common Stock, Conversion Ratio 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] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and Administrative Expense Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Number of airports with TSA precheck enrollment provided by clear Number Of Airports, TSA PreCheck Enrollment Provided By Clear Number Of Airports, TSA PreCheck Enrollment Provided By Clear Accrued Liabilities and Other Liabilities [Abstract] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Repurchase and retirement of equity (usd per share) Common Stock, Stock Repurchased and Retired, Average Price Per Share Common Stock, Stock Repurchased and Retired, Average Price Per Share Adjustment to Compensation: Adjustment to Compensation [Axis] Exchange of shares Shares Exchange during Period, Value Shares Exchange during Period, Value Exchange of shares (in shares) Shares Exchange During Period, Shares Shares Exchange During Period, Shares Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends Payable [Table] Dividends Payable [Table] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] 2027 Contractual Obligation, to be Paid, Year One Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Cost of direct salaries and benefits Cost, Direct Labor Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalent [Table] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Credit Agreement June 2026 Credit Agreement June 2026 [Member] Credit Agreement June 2026 Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] O 2026 Q1 Dividends O 2026 Q1 Dividends [Member] O 2026 Q1 Dividends Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Tax receivable agreement liability - short term Tax Receivable Agreement Liability, Current Tax Receivable Agreement Liability, Current Deferral of revenue Contract with Customer, Liability, Deferral of Revenue Contract with Customer, Liability, Deferral of Revenue Additional paid in capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Equipment Equipment [Member] Dividends [Axis] Dividends [Axis] Credit Agreement March 30, 2020 Credit Agreement March 30, 2020 [Member] Credit Agreement March 30, 2020 Prepaid revenue share fee Prepaid Revenue Share Fee, Current Prepaid Revenue Share Fee, Current Name Trading Arrangement, Individual Name Unrecognized expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Restricted Cash Cash and Cash Equivalents Disclosure [Text Block] Entity Address, Address Line Two Entity Address, Address Line Two Net share settlements of stock-based awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Commercial paper Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Vested (in USD 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 Income tax expense Income tax expense (benefit) Income Tax Expense (Benefit) Deferred tax asset Deferred Tax Assets, Deferred Income Cost of revenue share fee Cost of Revenue, Revenue Share Fee Cost of Revenue, Revenue Share Fee Acquired intangibles - technology Technology-Based Intangible Assets [Member] Award Timing Method Award Timing Method [Text Block] Description and Organization Consolidation, Policy [Policy Text Block] Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Exchangeable Alclear Units LLC Interest [Member] LLC Interest Expected to vest between 2 to 3 years Share-Based Payment Arrangement, Tranche Three [Member] Net income attributable to Clear Secure, Inc. Net income attributable to Clear Secure, Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Accrued partnership liabilities Accrued Partnership Liabilities, Current Accrued Partnership Liabilities, Current Statement [Table] Statement [Table] Expected to vest between 1 to 2 years Share-Based Payment Arrangement, Tranche Two [Member] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Restatement Determination Date: Restatement Determination Date [Axis] Tax distribution to members Noncontrolling Interest, Decrease From Distributions For Tax Payments To Noncontrolling Interest Holders Noncontrolling Interest, Decrease From Distributions For Tax Payments To Noncontrolling Interest Holders Schedule of Changes in Deferred Revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Employee Benefit Plan Defined Contribution Plan [Text Block] Category of Item Purchased [Axis] Category of Item Purchased [Axis] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]