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Financial Income, Net (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortization of marketable securities premium and accretion of discount, net	$ 33,021us-gaap_AmortizationOfDebtDiscountPremium	$ 22,389us-gaap_AmortizationOfDebtDiscountPremium	$ 33,784us-gaap_AmortizationOfDebtDiscountPremium
Financial income, net	28,762us-gaap_InvestmentIncomeNet	34,931us-gaap_InvestmentIncomeNet	40,332us-gaap_InvestmentIncomeNet
Financial Income
Schedule of Trading Securities and Other Trading Assets [Line Items]
Interest income	65,497us-gaap_InvestmentIncomeInterest / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	71,107us-gaap_InvestmentIncomeInterest / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	73,711us-gaap_InvestmentIncomeInterest / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember
Realized gain on sale of marketable securities	288us-gaap_MarketableSecuritiesRealizedGainLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	2,311us-gaap_MarketableSecuritiesRealizedGainLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	1,436us-gaap_MarketableSecuritiesRealizedGainLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember
Foreign currency re-measurement gain and others		893us-gaap_ForeignCurrencyTransactionGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	873us-gaap_ForeignCurrencyTransactionGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember
Total financial income	65,785us-gaap_InvestmentIncomeNonoperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	74,311us-gaap_InvestmentIncomeNonoperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember	76,020us-gaap_InvestmentIncomeNonoperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialIncomeMember
Financial Expense
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortization of marketable securities premium and accretion of discount, net	33,021us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	37,903us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	33,784us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember
Foreign currency re-measurement loss	1,844us-gaap_ForeignCurrencyTransactionGainLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember
Others	2,158us-gaap_OtherNonoperatingExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	1,477us-gaap_OtherNonoperatingExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	1,904us-gaap_OtherNonoperatingExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember
Total financial expense	$ 37,023us-gaap_InvestmentIncomeInvestmentExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	$ 39,380us-gaap_InvestmentIncomeInvestmentExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember	$ 35,688us-gaap_InvestmentIncomeInvestmentExpense / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = chkp_FinancialExpenseMember

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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