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Effective Income Tax Reconciliation (Parenthetical) (Detail) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Basic earnings per share amounts of the benefit resulting from the "Technological preferred or Preferred Enterprise" status | $ 0.66 | $ 0.57 | $ 0.68
Diluted earnings per share amounts of the benefit resulting from the "Technological preferred or Preferred Enterprise" status | $ 0.65 | $ 0.56 | $ 0.66

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- Definition Basic Earnings Per Shares Amount Resulting From Issuance Of Status + References No definition available. + Details
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- Definition Diluted Earnings Per Shares Amount Resulting From Issuance Of Status + References No definition available. + Details
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Namespace Prefix: | chkp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration