Fair Value of XLM - Additional Information (Details)	Dec. 31, 2022 Xlm $ / shares	Sep. 30, 2022 Xlm $ / shares
Fair Value Disclosures [Abstract]
Investment owned balance shares held by custodian \| Xlm	74,479,879.8332186	74,950,703.0854167
XLM fair value per share \| $ / shares	$ 0.07	$ 0.12

Investment owned balance shares held by custodian.

No definition available.

Name:	gxlm_InvestmentOwnedBalanceSharesHeldByCustodian
Namespace Prefix:	gxlm_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant