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Commitments and Contingencies Other Contractual Commitments and Open Purchase Orders (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
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| Operating lease commitments: | |
| Operating leases commitments, 2015 (remainder) | $ 9,560us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear |
| Operating lease commitments, 2016 | 9,453us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears |
| Operating lease commitments, 2017 | 7,252us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears |
| Operating lease commitments, 2018 | 6,506us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears |
| Operating lease commitments, 2019 | 4,567us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears |
| Operating lease commitments, Thereafter | 2,792us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter |
| Operating lease commitments | 40,130us-gaap_OperatingLeasesFutureMinimumPaymentsDue |
| Sublease rental income: | |
| Sublease rental income, 2015 (remainder) | 224ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderofFiscalYear |
| Sublease rental income, 2016 | 0ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueinTwoYears |
| Sublease rental income, 2017 | 0ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueinThreeYears |
| Sublease rental income, 2018 | 0ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueinFourYears |
| Sublease rental income, 2019 | 0ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueinFiveYears |
| Sublease rental income, Thereafter | 0ftnt_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueafterFiveYears |
| Sublease rental income | 224us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals |
| Operating lease commitments - net: | |
| Operating lease commitments - net, 2015 (remainder) | 9,336ftnt_OperatingLeasesNetFutureMinimumPaymentsDueRemainderofFiscalYear |
| Operating lease commitments - net, 2016 | 9,453ftnt_OperatingLeasesNetFutureMinimumPaymentsDueinTwoYears |
| Operating lease commitments - net, 2017 | 7,252ftnt_OperatingLeasesNetFutureMinimumPaymentsDueinThreeYears |
| Operating lease commitments - net, 2018 | 6,506ftnt_OperatingLeasesNetFutureMinimumPaymentsDueinFourYears |
| Operating lease commitments - net, 2019 | 4,567ftnt_OperatingLeasesNetFutureMinimumPaymentsDueinFiveYears |
| Operating lease commitments - net, Thereafter | 2,792ftnt_OperatingLeasesNetFutureMinimumPaymentsDueThereafter |
| Operating lease commitments - net | 39,906ftnt_OperatingLeasesNetFutureMinimumPayments |
| Inventory purchase commitments: | |
| Inventory purchase commitments, 2015 (remainder) | 67,715ftnt_PurchaseObligationDueRemainderofFiscalYear |
| Inventory purchase commitments, 2016 | 0us-gaap_PurchaseObligationDueInSecondYear |
| Inventory purchase commitments, 2017 | 0us-gaap_PurchaseObligationDueInThirdYear |
| Inventory purchase commitments, 2018 | 0us-gaap_PurchaseObligationDueInFourthYear |
| Inventory purchase commitments, 2019 | 0us-gaap_PurchaseObligationDueInFifthYear |
| Inventory purchase commitments, Thereafter | 0us-gaap_PurchaseObligationDueAfterFifthYear |
| Inventory purchase commitments | 67,715us-gaap_PurchaseObligation |
| Other contractual commitments and open purchase orders: | |
| Other contractual commitments and open purchase orders, 2015 (remainder) | 26,020ftnt_OtherCommitmentDueRemainderofFiscalYear |
| Other contractual commitments and open purchase orders, 2016 | 1,518us-gaap_OtherCommitmentDueInSecondYear |
| Other contractual commitments and open purchase orders, 2017 | 570us-gaap_OtherCommitmentDueInThirdYear |
| Other contractual commitments and open purchase orders, 2018 | 0us-gaap_OtherCommitmentDueInFourthYear |
| Other contractual commitments and open purchase orders, 2019 | 0us-gaap_OtherCommitmentDueInFifthYear |
| Other contractual commitments and open purchase orders, Thereafter | 0us-gaap_OtherCommitmentDueAfterFifthYear |
| Other contractual commitments and open purchase orders | 28,108us-gaap_OtherCommitment |
| Contractual Obligation | 135,729us-gaap_ContractualObligation |
| Contractual Obligation, 2015 (remainder) | 103,071ftnt_ContractualObligationDueRemainderofFiscalYear |
| Contractual Obligation, 2016 | 10,971us-gaap_ContractualObligationDueInSecondYear |
| Contractual Obligation, 2017 | 7,822us-gaap_ContractualObligationDueInThirdYear |
| Contractual Obligation, 2018 | 6,506us-gaap_ContractualObligationDueInFourthYear |
| Contractual Obligation, 2019 | 4,567us-gaap_ContractualObligationDueInFifthYear |
| Contractual Obligation, Thereafter | $ 2,792us-gaap_ContractualObligationDueAfterFifthYear |
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Contractual Obligation, Due Remainder of Fiscal Year No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due after Five Years No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due in Five Years No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due in Four Years No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due in Three Years No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due in Two Years No definition available.
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Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Remainder of Fiscal Year No definition available.
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Operating Leases, Net, Future Minimum Payments No definition available.
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Operating Leases, Net, Future Minimum Payments, Due in Five Years No definition available.
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Operating Leases, Net, Future Minimum Payments, Due in Four Years No definition available.
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Operating Leases, Net, Future Minimum Payments, Due in Three Years No definition available.
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Operating Leases, Net, Future Minimum Payments, Due in Two Years No definition available.
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Operating Leases, Net, Future Minimum Payments Due, Remainder of Fiscal Year No definition available.
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Operating Leases, Net, Future Minimum Payments, Due Thereafter No definition available.
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Other Commitment, Due Remainder of Fiscal Year No definition available.
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Purchase Obligation Due Remainder of Fiscal Year No definition available.
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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. No definition available.
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Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the fifth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the fourth fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year. No definition available.
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Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year. No definition available.
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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Contractually required future rental payments receivable on noncancelable subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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- Definition
Minimum amount of other commitment maturing after the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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- Definition
Minimum amount of other commitment maturing in the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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- Definition
Minimum amount of other commitment maturing in the fourth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. No definition available.
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Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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- Definition
Minimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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- Definition
Minimum amount of purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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- Definition
Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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- Definition
Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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