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Project Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2016 | Oct. 31, 2015
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Project assets table [Line Items] |  |
Sale Leaseback Transaction, Net Book Value | $ 29,300 |
Project Assets without a sale-leaseback | 17,800 |
Project assets current | 0 | $ 5,260
Project assets noncurrent | 47,111 | 6,922
project assets current and noncurrent | $ 47,111 | $ 12,182

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- Definition Long-term project assets + References No definition available. + Details
Name: | fcel_Longtermprojectassets
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Project Assets, Current + References No definition available. + Details
Name: | fcel_ProjectAssetsCurrent
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Project Assets without a sale-leaseback + References No definition available. + Details
Name: | fcel_ProjectAssetswithoutasaleleaseback
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition project assets current and noncurrent + References No definition available. + Details
Name: | fcel_Projectassetscurrentandnoncurrent
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition [Line Items] for Project assets table [Table] + References No definition available. + Details
Name: | fcel_ProjectassetstableLineItems
Namespace Prefix: | fcel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51843-112757 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51831-112757 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51840-112757 + Details
Name: | us-gaap_SaleLeasebackTransactionNetBookValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant