Advance payments received amount.

No definition available.

Name:	GTLL_AdvancePaymentsReceviedAmount
Namespace Prefix:	GTLL_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

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-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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SCHEDULE OF NOTE RECEIVABLE (Details) (Parenthetical) - USD ($)			6 Months Ended
	Sep. 30, 2022	Dec. 14, 2021	Dec. 31, 2022	Dec. 31, 2021
Repayments of related party debt				$ 405
Senior Secured Promissory Note [Member] \| Tersus Power, Inc [Member]
Debt instrument face amount		$ 500,000
Maturity date description		The Note shall bear interest at 5% annually, be amortized over 25 years and the Borrower shall pay the full amount of principal and interest in one balloon payment on December 14, 2026 (the “Maturity Date”).
Advanced payment amount		$ 37,500
Repayments of related party debt	$ 350,000
Senior Secured Promissory Note [Member] \| Tersus Power, Inc [Member] \| Maximum [Member]
Advance borrower fund, amount		$ 500,000