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CUSTOMER ASSETS AND LIABILITIES (Fair Value of Customer Crypto Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Jan. 01, 2022 | Dec. 31, 2021 | [1]
--- | --- | --- | --- | ---
Cryptocurrency, by Type [Line Items] |  |  |  |
Customer crypto assets | $ 95,113,124 | [1] | $ 267,600,000 | $ 0
Percentage of total | 100.00% |  |  |
Bitcoin |  |  |  |
Cryptocurrency, by Type [Line Items] |  |  |  |
Customer crypto assets | $ 39,900,000 |  |  |
Percentage of total | 42.00% |  |  |
Ethereum |  |  |  |
Cryptocurrency, by Type [Line Items] |  |  |  |
Customer crypto assets | $ 24,100,000 |  |  |
Percentage of total | 25.30% |  |  |
Other crypto assets |  |  |  |
Cryptocurrency, by Type [Line Items] |  |  |  |
Customer crypto assets | $ 31,100,000 |  |  |
Percentage of total | 32.70% |  |  |
[1] | Safeguarding assets

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- Definition Cryptocurrency, by Type [Line Items] + References No definition available. + Details
Name: | coin_CryptocurrencyByTypeLineItems
Namespace Prefix: | coin_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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

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- Definition Safeguarding Asset, Platform Operator, Crypto-Asset, Percentage Of Total + References No definition available. + Details
Name: | coin_SafeguardingAssetPlatformOperatorCryptoAssetPercentageOfTotal
Namespace Prefix: | coin_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | coin_CryptoAssetAxis=coin_BitcoinMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | coin_CryptoAssetAxis=coin_EthereumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | coin_CryptoAssetAxis=coin_CryptoAssetOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |