Name:	gpac_DeferredUnderwritingCommissionsNonCurrent
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Dissolution expenses payable if a Business Combination is not completed within the Combination Period.

No definition available.

Name:	gpac_DissolutionExpensesPayable
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair market value as a percentage of the net assets held in the Trust Account (excluding the amount of deferred underwriting discounts held in trust and taxes payable on the income earned on the Trust Account) at the time of the signing an agreement to enter into a Business Combination.

No definition available.

Name:	gpac_FairMarketValueAsPercentageOfNetAssetsHeldInTrustAccountIncludedInInitialBusinessCombination
Namespace Prefix:	gpac_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

Maturity period of securities obligations, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	gpac_MaturityPeriodOfSecuritiesObligations
Namespace Prefix:	gpac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Maximum number of days to redeem public shares if the initial business combination is not complete within the completion window, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	gpac_MaximumNumberDaysToRedeemPublicShares
Namespace Prefix:	gpac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Maximum number of months of entitlement from closing of the initial public offering, to liquidating distributions from the Trust Account with respect to any Founder Shares held by it., in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	gpac_MaximumNumberOfMonthsFromClosingOfInitialPublicOffering
Namespace Prefix:	gpac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of days prior to the consummation in initial Business Combination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	gpac_NumberOfDaysPriorInInitialBusinessCombination
Namespace Prefix:	gpac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of operating businesses that must be included in initial Business Combination.

No definition available.

Name:	gpac_NumberOfOperatingBusinessesIncludedInInitialBusinessCombination
Namespace Prefix:	gpac_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Amount of other costs incurred in connection with the offering of Units in Initial Public Offering and Private Placement of Warrants.

No definition available.

Name:	gpac_OtherOfferingCosts
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Payment for underwriting discounts in connection with initial public offering.

No definition available.

Name:	gpac_PaymentOfUnderwritingFee
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Percentage of Public Shares that would be redeemed if a Business Combination is not completed within the Initial Combination Period.

No definition available.

Name:	gpac_PercentageOfPublicSharesToRedeemIfBusinessCombinationIsNotCompletedWithinInitialCombinationPeriod
Namespace Prefix:	gpac_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

Period during which sufficient liquidity is available to meet company's working capital requirement in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	gpac_PeriodToMeetSufficientLiquidityForWorkingCapital
Namespace Prefix:	gpac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Permitted annual withdrawal limit form trust account to fund the company's working capital.

No definition available.

Name:	gpac_PermittedWithdrawalLimitFromTrustAccountToFundWorkingCapital
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Post-transaction ownership percentage of the outstanding voting securities of the target business sufficient for it not to be required to register as an investment company under the Investment Company Act of 1940.

No definition available.

Name:	gpac_PostTransactionOwnershipPercentageOfTheTargetBusiness
Namespace Prefix:	gpac_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

The number of securities into which each unit may be converted. For example, but not limited to, each unit may be converted into two shares of common stock.

No definition available.

Name:	gpac_UnitsNumberOfSecuritiesCalledByUnits
Namespace Prefix:	gpac_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Withdrawals for tax payments are excluded from annual limitation; however, such tax-related withdrawals may only be made from interest earned and not from the principal held in the trust account.

No definition available.

Name:	gpac_WithdrawalsFromTrustAccountNotSubjectToConditions
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of working capital (deficit) or surplus.

No definition available.

Name:	gpac_WorkingCapitalDeficitOrSurplus
Namespace Prefix:	gpac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Year of inception.

No definition available.

Name:	gpac_YearOfInception
Namespace Prefix:	gpac_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-11

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-12

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-21

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-SubTopic 210
-Topic 946
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-20

Name:	us-gaap_Cash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

No definition available.

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.A)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480341/340-10-S99-1

Name:	us-gaap_DeferredOfferingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The cash inflow associated with the amount received from entity's first offering of stock to the public.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

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

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

No definition available.

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Per share or per unit amount of equity securities issued.

No definition available.

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Number of new stock issued during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

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

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.

No definition available.

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

Name:	us-gaap_ClassOfWarrantOrRightAxis=gpac_PublicWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementClassOfStockAxis=gpac_PublicSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gpac_SponsorAndUnderwritersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: