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Commitments and Contingencies (Details) member in Thousands, € in Millions |  |  |  |  |  |  |  |  |  | 1 Months Ended | 6 Months Ended |  |  |  |  |  |  |
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Jun. 09, 2026 | Mar. 25, 2026 USD ($) | Mar. 24, 2026 USD ($) | Nov. 19, 2025 EUR (€) | Aug. 01, 2025 USD ($) member | Nov. 18, 2024 EUR (€) | Apr. 01, 2024 judicialCase | Dec. 22, 2022 USD ($) | Jul. 27, 2018 classAction | May 31, 2026 USD ($) | Apr. 30, 2025 EUR (€) plaintiff | Apr. 30, 2020 USD ($) | Jun. 30, 2026 USD ($) stateAttorneyGeneral state | Jul. 29, 2026 USD ($) | Dec. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Apr. 29, 2025 mediaCompany | Oct. 24, 2024 radioAndTelevisionPublisher | Dec. 01, 2023 mediaCompany | May 12, 2023 EUR (€)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating and finance leases not yet commenced |  |  |  |  |  |  |  |  |  |  |  |  | $ 278,990,000,000 |  |  |  |  |  |  |
Non-cancelable contractual obligations |  |  |  |  |  |  |  |  |  |  |  |  | 349,310,000,000 |  |  |  |  |  |  |
Contractual obligations due in 2026 |  |  |  |  |  |  |  |  |  |  |  |  | 53,520,000,000 |  |  |  |  |  |  |
Contractual obligations due in 2027 |  |  |  |  |  |  |  |  |  |  |  |  | 81,650,000,000 |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | 15,462,000,000 |  | $ 35,873,000,000 | $ 12,005,000,000 |  |  |  |
Amount awarded to other party |  |  |  |  |  |  |  | $ 725,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Litigation, status update, period following decision in case | 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of class actions filed |  |  |  |  |  |  | 2 |  | 2 |  |  |  |  |  |  |  |  |  |  |
FTC Inquiry |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of penalty for settlement |  |  |  |  |  |  |  |  |  |  |  | $ 5,000,000,000.0 |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  |  |  |  |  |  |  |  |  |  |  |  | $ 62,850,000,000 |  |  |  |  |  |  |
IDPC Inquiry |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1,200
European Commission, Statement of Objections |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Imposed fine | € |  |  |  |  |  | € 798 |  |  |  |  |  |  |  |  |  |  |  |  |  |
European Commission, Subscription For No Ads |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Imposed fine | € |  |  |  |  |  |  |  |  |  |  | € 200 |  |  |  |  |  |  |  |  |
Frasco v. Flo Health, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages sought, value per class member |  |  |  |  | $ 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of class members | member |  |  |  |  | 1,250 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asociacion de Medios de Informacion (AMI) v. Meta Ireland | Meta Platforms Ireland Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of entities that filed a claim | mediaCompany |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 87 |
Loss contingency, damages awarded, value | € |  |  |  | € 542 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Union de Televisiones Comerciales Asociadas (UTECA) v. Meta Ireland | Meta Platforms Ireland Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of entities that filed a claim | radioAndTelevisionPublisher |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |
Amaury et al. v. Meta Platforms Ireland Limited | Meta Platforms Ireland Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of entities that filed a claim | mediaCompany |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 67 |  |  |
Number of additional plaintiffs that intervened | plaintiff |  |  |  |  |  |  |  |  |  |  | 34 |  |  |  |  |  |  |  |  |
Youth-Related Actions, Bellwether Trials |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages awarded, percentage |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Youth-Related Actions, Bellwether Trials | Meta & Youtube |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages awarded, value |  | $ 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Youth-Related Actions, Bellwether Trials | Youtube |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages awarded, percentage |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Youth-Related Actions, State Attorney General Cases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  |  |  |  |  |  |  |  |  | $ 953,000,000 |  |  |  |  |  |  |  |  |  |
Number of entities that filed a claim | state |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |
Loss contingency, damages awarded, value |  |  | $ 375,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of state attorneys general who have sued in multidistrict litigation | stateAttorneyGeneral |  |  |  |  |  |  |  |  |  |  |  |  | 29 |  |  |  |  |  |  |
Reclassification, Other | Money market funds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | $ (10,800,000,000) |  |  |  |  |  |  |
Money market funds | Reclassification, Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | 10,800,000,000 |  |  |  |  |  |  |
Contingent Obligation to Purchase Cloud Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other commitment |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,720,000,000 |  |  |  |  |  |  |
Other commitments, period |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating and finance leases not yet commenced |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 68,000,000,000 |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |
Finance lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |
Other commitments, period |  |  |  |  |  |  |  |  |  |  |  |  | 9 years |  |  |  |  |  |  |
Minimum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 years |  |  |  |  |  |
Finance lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 30 years |  |  |  |  |  |  |
Finance lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 30 years |  |  |  |  |  |  |
Other commitments, period |  |  |  |  |  |  |  |  |  |  |  |  | 25 years |  |  |  |  |  |  |
Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |  |  |
Finance lease, not yet commenced, term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |  |  |

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