Name:	ggrou_AgencyFeePerBushelFromMembersToArrangeCornUnderMethodB
Namespace Prefix:	ggrou_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Represents annual contractual payments for the procurement of corn and other agency services.

No definition available.

Name:	ggrou_AnnualPaymentsForProcurementOfCornAndOtherAgencyServices
Namespace Prefix:	ggrou_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the amount of incentive paid per bushel to the members who deliver corn to the entity under Method A.

No definition available.

Name:	ggrou_IncentivePaymentPerBushelToMembersOnDeliveryOfCornUnderMethodA
Namespace Prefix:	ggrou_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Represents the payment made by Cargill for corn delivered to the entity using Method B.

No definition available.

Name:	ggrou_PaymentForCornDeliveredUsingMethodB
Namespace Prefix:	ggrou_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

No definition available.

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

- Details

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

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.