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CUSTOMER ASSETS AND LIABILITIES (Schedule of Customers' Cash and Crypto Positions) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Jan. 01, 2022 | Dec. 31, 2021 | Sep. 30, 2021
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |  |  |  |
Customer custodial cash | $ 6,591,105 |  |  | $ 10,526,233 |  | $ 8,956,966
Customer crypto assets | 95,113,124 | [1] | $ 267,600,000 | 0 | [1] |
Total customer assets | 101,704,229 |  |  | 10,526,233 |  |
Customer custodial cash liabilities | 6,357,657 |  |  | 10,480,612 |  |
Customer crypto liabilities | 95,113,124 | [2] | $ 267,600,000 | 0 | [2] |
Total customer liabilities | $ 101,470,781 |  |  | $ 10,480,612 |  |
[1] | Safeguarding assets
[2] | Safeguarding liabilities

X
- Definition Client Custodial Cash, Current + References No definition available. + Details
Name: | coin_ClientCustodialCashCurrent
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Custodial Cash Due to Clients, Current + References No definition available. + Details
Name: | coin_CustodialCashDueToClientsCurrent
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Customer Assets + References No definition available. + Details
Name: | coin_CustomerAssets
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Customer Liabilities + References No definition available. + Details
Name: | coin_CustomerLiabilities
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Safeguarding Asset, Platform Operator, Crypto-Asset + References No definition available. + Details
Name: | coin_SafeguardingAssetPlatformOperatorCryptoAsset
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Safeguarding Liability, Platform Operator, Crypto-Asset + References No definition available. + Details
Name: | coin_SafeguardingLiabilityPlatformOperatorCryptoAsset
Namespace Prefix: | coin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration