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Deferred Revenues (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 1,337,954	$ 1,186,573
Security subscriptions
Deferred Revenue Arrangement [Line Items]
Deferred revenue	554,215	476,261
Software updates and maintenance
Deferred Revenue Arrangement [Line Items]
Deferred revenue	765,899	702,786
Other
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 17,840	$ 7,526

X

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=us-gaap_SoftwareServiceSupportAndMaintenanceArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=chkp_OtherArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: