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Share Option and Warrant Reserves (Details Narratives)	12 Months Ended
	Dec. 31, 2022 $ / shares	Dec. 31, 2021 $ / shares
Share Option and Warrant Reserves
Number of share options granted	3,430,000	1,405,000
Weighted average exercise price granted	$ 0.46	$ 0.56

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- References

No definition available.

+ Details

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Namespace Prefix:	fury_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

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Name:	fury_WeightedAverageExercisePriceGranted
Namespace Prefix:	fury_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

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- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2021-03-24

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Balance Type:	na
Period Type:	duration