XML 76 R65.htm IDEA: XBRL DOCUMENT
v3.23.2

Subsequent Events - EMTEC Joint Development Agreement (Details) - Emre joint development agreement - USD ($) $ in Millions | Aug. 26, 2023 | Aug. 25, 2023 | Dec. 20, 2022 | Dec. 19, 2022
--- | --- | --- | --- | ---
Subsequent Events |  |  |  |
Research costs reimbursement amount |  |  | $ 60.0 | $ 50.0
Subsequent Event [Member] |  |  |  |
Subsequent Events |  |  |  |
Research costs reimbursement amount | $ 67.0 | $ 60.0 |  |

X
- Definition The amount of reimbursement under a research and development arrangement accounted for as a contract to perform research and development. + References No definition available. + Details
Name: | fcel_ResearchAndDevelopmentArrangementAmountOfReimbursement
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=fcel_EmreJointDevelopmentAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |