Net Income Per Share - Additional Information (Details)	12 Months Ended
Dec. 31, 2025 shares
Equity and net loss per share [Abstract]
Unvested Class A earnout shares are subject to forfeiture under the deferred settlement agreement	375,000

Unvested Class A earnout shares are subject to forfeiture under the deferred settlement agreement.

No definition available.

Name:	fbyd_UnvestedClassAEarnoutSharesSubjectToForfeitureUnderTheDeferredSettlementAgreement
Namespace Prefix:	fbyd_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration