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current liabilities Liabilities, Current Asociacion de Medios de Informacion (AMI) v. 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Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Segment Reporting [Line Items] Segment Reporting [Line Items] Amaury et al. v. Meta Platforms Ireland Limited Amaury et al. v. Meta Platforms Ireland Limited [Member] Amaury et al. v. 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Meta Ireland Union de Televisiones Comerciales Asociadas (UTECA) v. Meta Ireland [Member] Union de Televisiones Comerciales Asociadas (UTECA) v. 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Benefit Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of the period Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of the period Total cash, cash equivalents, restricted cash, and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation 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] Restricted cash and restricted cash equivalents, included in prepaid expenses and other current assets Restricted Cash and Cash Equivalent, Current 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] Subsequent Event [Table] Subsequent Event [Table] Equity method investment, ownership percentage Equity Method Investment, Ownership Percentage Share-based compensation Share-Based Payment Arrangement, Noncash Expense Lease not yet commenced, residual value guarantee, maximum Unrecorded Unconditional Purchase Obligation, Residual Value Guarantee, Maximum Unrecorded Unconditional Purchase Obligation, Residual Value Guarantee, Maximum Employee compensation Labor and Related Expense Intangible asset transferred to subsidiary, increase in reported value Income Tax Examination, Intangible Assets Transferred To Subsidiary, Increase In Reported Value Income Tax Examination, Intangible Assets Transferred To Subsidiary, Increase In Reported Value Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Disposal Group Name [Axis] Disposal Group Name [Axis] Frasco v. Flo Health, Inc. Frasco v. Flo Health, Inc. [Member] Frasco v. Flo Health, Inc. Investment, Name [Domain] Investment, Name [Domain] 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic EPS (in dollars per share) Earnings Per Share, Basic May 2026 Notes May 2026 Debt [Member] May 2026 Debt Repurchases of Class A common stock Payments for Repurchase of Common Stock Youth-Related Actions, Bellwether Trials Youth-Related Actions, Bellwether Trials [Member] Youth-Related Actions, Bellwether Trials Total current assets Assets, Current Imposed fine Loss Contingency, Imposed Fine Loss Contingency, Imposed Fine Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt Long-Term Debt, Excluding Current Maturities Time deposits Bank Time Deposits [Member] Cost of revenue Cost of Revenue Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net 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Securities without Readily Determinable Fair Value [Table Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders' equity Liabilities and Equity Reality Labs Reality Labs [Member] Reality Labs Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Restricted cash and restricted cash equivalents, included in other assets Restricted Cash and Cash Equivalent, Noncurrent Other liabilities Increase (Decrease) in Other Noncurrent Liabilities Long-term Debt Long-Term Debt [Text Block] Equity Securities without Readily Determinable Fair Value [Table] Equity Securities without Readily Determinable Fair Value [Table] Name Awards Close in Time to MNPI Disclosures, Individual Name Number of entities that filed a claim Loss Contingency, Number Of Entities That Filed A Claim Loss Contingency, Number Of Entities That Filed A Claim 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] Schedule of Property, Plant and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends Payable [Table] Dividends Payable [Table] Financial Instruments [Abstract] Financial Instruments 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 Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Contractual obligations due in 2027 Contractual Obligation, to be Paid, Year One Other commitment Other Commitment Servers and network assets Servers and Network Assets [Member] Servers and Network Assets Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Number of additional plaintiffs that intervened Loss Contingency, Number Of Additional Plaintiffs That Intervened Loss Contingency, Number Of Additional Plaintiffs That Intervened Total Assets, Fair Value Disclosure Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Other Other Noncash Income (Expense) Debt Instrument Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Restricted cash equivalents Restricted Cash Equivalents, Fair Value Disclosure Restricted Cash Equivalents, Fair Value Disclosure Entity Filer Category Entity Filer Category Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Name Trading Arrangement, Individual Name Unrecognized share-based compensation expense, non-options Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Unrealized gain (loss) on marketable equity securities Equity Securities, FV-NI, Unrealized Gain (Loss) Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Unrecognized tax benefits that would result in tax benefit if realized Unrecognized Tax Benefits that Would Impact Effective Tax Rate Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision (benefit) for income taxes Income Tax Expense (Benefit) Payment of penalty for settlement Loss Contingency Accrual, Payments Award Timing Method Award Timing Method [Text Block] Net decrease in cash, cash equivalents, restricted cash, and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net income Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Amount awarded to other party Litigation Settlement, Amount Awarded to Other Party Finance lease, not yet commenced, term (in years) Lessee, Finance Lease, Lease Not yet Commenced, Term of Contract Number of class actions filed Loss Contingency, New Claims Filed, Number Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Acquisitions and Goodwill Acquisitions And Goodwill [Text Block] Acquisitions And Goodwill Loss contingency, damages sought, value Loss Contingency, Damages Sought, Value Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Numerator Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]