v3.20.4

Material Agreements (Details)	1 Months Ended					6 Months Ended
	Dec. 29, 2020 USD ($) shares	Sep. 18, 2020 shares	Jul. 30, 2020 USD ($)	May 31, 2020 USD ($) shares	Apr. 30, 2020	Dec. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)
CEO [Member]
Other Commitments [Line Items]
Annual compensation						$ 500,000
Non-compete agreement and severance benefits						90,000
CFO [Member]
Other Commitments [Line Items]
Annual compensation						250,000
Non-compete agreement and severance benefits						72,000
Consulting Agreement [Member]
Other Commitments [Line Items]
Percentage of equity interest in Galaxy					4.90%
Consulting Agreement [Member] | Stock Plan 2020 [Member]
Other Commitments [Line Items]
Shares issued for services | shares		97,250,000
Equity Purchase Agreement [Member]
Other Commitments [Line Items]
Value of shares purchased	$ 500,000			$ 10,000,000
Shares issued | shares	100,000,000			50,000,000
Accounts Receivable Factoring Agreement [Member]
Other Commitments [Line Items]
Percentage of factoring fees			2.50%
Percentage of factoring fees increases			3.50%
Credit line			$ 1,000,000
Factored receivables			$ 300,000			$ 487,000	$ 0
Supply Agreement [Member]
Other Commitments [Line Items]
Number of units ordered under supply agreement						4,000
Supply agreement amount						$ 3,488,000
Tooling costs						$ 25
Number of units supplied under supply agreement						739

X

- Definition

Amount of credit line.

+ References

No definition available.

+ Details

Name:	gaxy_CreditLine
Namespace Prefix:	gaxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of factored receivables.

+ References

No definition available.

+ Details

Name:	gaxy_FactoredReceivables
Namespace Prefix:	gaxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Number of units ordered under supply agreement.

+ References

No definition available.

+ Details

Name:	gaxy_NumberOfUnitsOrderedUnderSupplyAgreement
Namespace Prefix:	gaxy_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of units supplied under supply agreement.

+ References

No definition available.

+ Details

Name:	gaxy_NumberOfUnitsSuppliedUnderSupplyAgreement
Namespace Prefix:	gaxy_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of equity interest in galaxy.

+ References

No definition available.

+ Details

Name:	gaxy_PercentageOfEquityInterestInGalaxy
Namespace Prefix:	gaxy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of factoring fees.

+ References

No definition available.

+ Details

Name:	gaxy_PercentageOfFactoringFees
Namespace Prefix:	gaxy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of factoring fees increases.

+ References

No definition available.

+ Details

Name:	gaxy_PercentageOfFactoringFeesIncreases
Namespace Prefix:	gaxy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Supply agreement amount.

+ References

No definition available.

+ Details

Name:	gaxy_SupplyAgreementAmount
Namespace Prefix:	gaxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Tooling costs.

+ References

No definition available.

+ Details

Name:	gaxy_ToolingCosts
Namespace Prefix:	gaxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Value of shares purchased.

+ References

No definition available.

+ Details

Name:	gaxy_ValueOfSharesPurchased
Namespace Prefix:	gaxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of expense for salary and wage arising from service rendered by officer. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(4))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

Name:	us-gaap_OfficersCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment.

+ References

No definition available.

+ Details

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

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefFinancialOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=gaxy_ConsultingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gaxy_StockPlan2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=gaxy_EquityPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=gaxy_AccountsReceivableFactoringAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=gaxy_SupplyAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: