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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment Depreciation Rates) (Details)	12 Months Ended
	Dec. 31, 2017
Computers and Peripheral Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment depreciation rate	20.00%
Computers and Peripheral Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment depreciation rate	33.00%
Office Furniture and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment depreciation rate	7.00%
Office Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment depreciation rate	20.00%
Internal use software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment depreciation rate	33.00%

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- Definition

Property and equipment depreciation rate

+ References

No definition available.

+ Details

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Namespace Prefix:	NICE_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

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- Details

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X

- Details

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X

- Details

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X

- Details

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X

- Details

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