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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Other Intangible Assets Estimated Useful Lives (Details) | 12 Months Ended
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Dec. 31, 2021
Core technology | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 4 years
Core technology | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 8 years
Customer relationships | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 3 years
Customer relationships | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 8 years
Trademarks | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 2 years
Trademarks | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 12 years
Customer backlog | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 2 years
Customer backlog | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 3 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=nice_CoreTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TrademarksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OrderOrProductionBacklogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |