Other Balance Sheet Details - Other Long-Term Obligations (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Oct. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Income tax liability	$ 14,342	$ 9,083
Deferred tenant allowance	10,839cien_TenantImprovementAccrualNoncurrent	11,775cien_TenantImprovementAccrualNoncurrent
Straight-line rent	5,174us-gaap_DeferredRentCreditNoncurrent	4,127us-gaap_DeferredRentCreditNoncurrent
Capital lease obligations	4,589	1,983
Forward interest rate swap contract	2,083	0
Other	8,363cien_OtherObligationsNoncurrent	7,785cien_OtherObligationsNoncurrent
Other Liabilities, Noncurrent	$ 45,390us-gaap_OtherLiabilitiesNoncurrent	$ 34,753us-gaap_OtherLiabilitiesNoncurrent

Other Obligations, Noncurrent

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- Definition

Tenant Improvement Accrual, Noncurrent

+ References

No definition available.

+ Details

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

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-Topic 210

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-Subparagraph (SX 210.5-02.22)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

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-Subparagraph (a)

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-Topic 210

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-Subparagraph (SX 210.5-02.26(c))

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).

+ References

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- Definition

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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-Topic 815

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- Definition

Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

+ References

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