XML 72 R61.htm IDEA: XBRL DOCUMENT v3.22.2.2

Stockholders' Equity and Warrant Liabilities - Schedule of Warrant Activity (Details) - Series C Warrants	9 Months Ended
	Jul. 31, 2022 shares
Class of Warrant or Right, Outstanding	950,102
Warrants expired	(950,102)

X

- Definition

Represents number of warrants expired during the period.

+ References

No definition available.

+ Details

Name:	fcel_ClassOfWarrantOrRightExpired
Namespace Prefix:	fcel_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=fcel_SeriesCWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: