{
 "instance": {
  "gpp-20191231x10k.htm": {
   "axisCustom": 0,
   "axisStandard": 25,
   "contextCount": 239,
   "dts": {
    "calculationLink": {
     "local": [
      "gpp-20191231_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "gpp-20191231_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "gpp-20191231x10k.htm"
     ]
    },
    "labelLink": {
     "local": [
      "gpp-20191231_lab.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-doc-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-doc-2019-01-31.xml",
      "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "gpp-20191231_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-ref-2019-01-31.xml",
      "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-ref-2019-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "gpp-20191231.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd",
      "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd",
      "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-parts-codification-2019-01-31.xsd"
     ]
    }
   },
   "elementCount": 534,
   "entityCount": 1,
   "hidden": {
    "http://fasb.org/us-gaap/2019-01-31": 8,
    "http://www.gpreinc.com/20191231": 1,
    "http://xbrl.sec.gov/dei/2019-01-31": 4,
    "total": 13
   },
   "keyCustom": 56,
   "keyStandard": 342,
   "memberCustom": 45,
   "memberStandard": 27,
   "nsprefix": "gpp",
   "nsuri": "http://www.gpreinc.com/20191231",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "00090 - Document - Document and Entity Information",
     "role": "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R10": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10401 - Disclosure - Dispositions",
     "role": "http://www.gpreinc.com/role/DisclosureDispositions",
     "shortName": "Dispositions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R11": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10501 - Disclosure - Fair Value Disclosures",
     "role": "http://www.gpreinc.com/role/DisclosureFairValueDisclosures",
     "shortName": "Fair Value Disclosures",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R12": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10601 - Disclosure - Property and Equipment",
     "role": "http://www.gpreinc.com/role/DisclosurePropertyAndEquipment",
     "shortName": "Property and Equipment",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R13": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10701 - Disclosure - Goodwill",
     "role": "http://www.gpreinc.com/role/DisclosureGoodwill",
     "shortName": "Goodwill",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R14": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10801 - Disclosure - Debt",
     "role": "http://www.gpreinc.com/role/DisclosureDebt",
     "shortName": "Debt",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R15": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10901 - Disclosure - Asset Retirement Obligations",
     "role": "http://www.gpreinc.com/role/DisclosureAssetRetirementObligations",
     "shortName": "Asset Retirement Obligations",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R16": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11001 - Disclosure - Unit-Based Compensation",
     "role": "http://www.gpreinc.com/role/DisclosureUnitBasedCompensation",
     "shortName": "Unit-Based Compensation",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R17": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalNotesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11101 - Disclosure - Partners' Deficit",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficit",
     "shortName": "Partners' Deficit",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalNotesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R18": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11201 - Disclosure - Earnings Per Unit",
     "role": "http://www.gpreinc.com/role/DisclosureEarningsPerUnit",
     "shortName": "Earnings Per Unit",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R19": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11301 - Disclosure - Income Taxes",
     "role": "http://www.gpreinc.com/role/DisclosureIncomeTaxes",
     "shortName": "Income Taxes",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00100 - Statement - Consolidated Balance Sheets",
     "role": "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
     "shortName": "Consolidated Balance Sheets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:AccountsReceivableNetCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R20": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11401 - Disclosure - Commitments and Contingencies",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingencies",
     "shortName": "Commitments and Contingencies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R21": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11501 - Disclosure - Related Party Transactions",
     "role": "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactions",
     "shortName": "Related Party Transactions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R22": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11601 - Disclosure - Equity Method Investment",
     "role": "http://www.gpreinc.com/role/DisclosureEquityMethodInvestment",
     "shortName": "Equity Method Investment",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R23": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11701 - Disclosure - Quarterly Financial Data",
     "role": "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialData",
     "shortName": "Quarterly Financial Data",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R24": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ConsolidationPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "20102 - Disclosure - Basis of Presentation and Description of Business (Policy)",
     "role": "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessPolicy",
     "shortName": "Basis of Presentation and Description of Business (Policy)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ConsolidationPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R25": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "20202 - Disclosure - Summary Of Significant Accounting Policies (Policies)",
     "role": "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies",
     "shortName": "Summary Of Significant Accounting Policies (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R26": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30203 - Disclosure - Summary Of Significant Accounting Policies (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables",
     "shortName": "Summary Of Significant Accounting Policies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R27": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30303 - Disclosure - Revenue (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureRevenueTables",
     "shortName": "Revenue (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R28": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30403 - Disclosure - Dispositions (Table)",
     "role": "http://www.gpreinc.com/role/DisclosureDispositionsTable",
     "shortName": "Dispositions (Table)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R29": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "gpp:ScheduleOfComponentsOfPropertyAndEquipmentTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30603 - Disclosure - Property and Equipment (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentTables",
     "shortName": "Property and Equipment (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "gpp:ScheduleOfComponentsOfPropertyAndEquipmentTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_us-gaap_LimitedPartnerMember_us-gaap_StatementClassOfStockAxis_gpp_CommonUnitsPublicMember",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LimitedPartnersCapitalAccountUnitsIssued",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00105 - Statement - Consolidated Balance Sheets (Parenthetical)",
     "role": "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
     "shortName": "Consolidated Balance Sheets (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_us-gaap_LimitedPartnerMember_us-gaap_StatementClassOfStockAxis_gpp_CommonUnitsPublicMember",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LimitedPartnersCapitalAccountUnitsIssued",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R30": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30803 - Disclosure - Debt (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureDebtTables",
     "shortName": "Debt (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R31": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30903 - Disclosure - Asset Retirement Obligations (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsTables",
     "shortName": "Asset Retirement Obligations (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R32": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31003 - Disclosure - Unit-Based Compensation (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationTables",
     "shortName": "Unit-Based Compensation (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R33": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfCommonStockOutstandingRollForwardTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31103 - Disclosure - Partners' Deficit (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitTables",
     "shortName": "Partners' Deficit (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfCommonStockOutstandingRollForwardTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R34": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31203 - Disclosure - Earnings Per Unit (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureEarningsPerUnitTables",
     "shortName": "Earnings Per Unit (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R35": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31303 - Disclosure - Income Taxes (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureIncomeTaxesTables",
     "shortName": "Income Taxes (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R36": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "gpp:ImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31403 - Disclosure - Commitments and Contingencies (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
     "shortName": "Commitments and Contingencies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "gpp:ImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R37": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31603 - Disclosure - Equity Method Investment (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentTables",
     "shortName": "Equity Method Investment (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R38": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31703 - Disclosure - Quarterly Financial Data (Tables)",
     "role": "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataTables",
     "shortName": "Quarterly Financial Data (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R39": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_7_1_2015_To_7_31_2015",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnitsSoldInPublicOffering",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40101 - Disclosure - Basis of Presentation and Description of Business (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
     "shortName": "Basis of Presentation and Description of Business (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_7_1_2015_To_7_31_2015",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnitsSoldInPublicOffering",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R4": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00200 - Statement - Consolidated Statements of Operations",
     "role": "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
     "shortName": "Consolidated Statements of Operations",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:CostMaintenance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R40": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
       "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
       "span",
       "p",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-5",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40201 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails",
     "shortName": "Summary Of Significant Accounting Policies (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
       "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
       "span",
       "p",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-5",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R41": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:PropertyPlantAndEquipmentTextBlock",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_srt_RangeAxis_srt_MinimumMember_us-gaap_PropertyPlantAndEquipmentByTypeAxis_us-gaap_BuildingAndBuildingImprovementsMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentUsefulLife",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40202 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Estimated Useful Lives Of Assets) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails",
     "shortName": "Summary Of Significant Accounting Policies (Schedule Of Estimated Useful Lives Of Assets) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:PropertyPlantAndEquipmentTextBlock",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_srt_RangeAxis_srt_MinimumMember_us-gaap_PropertyPlantAndEquipmentByTypeAxis_us-gaap_BuildingAndBuildingImprovementsMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentUsefulLife",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R42": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_10_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40301 - Disclosure - Revenue (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
     "shortName": "Revenue (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "0",
      "lang": "en-US",
      "name": "gpp:AverageTruckingMilesTraveledFromReceiptPointToDeliveryPoint",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit13",
      "xsiNil": "false"
     }
    },
    "R43": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40302 - Disclosure - Revenue (Disaggregatation Of Revenue By Major Source) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
     "shortName": "Revenue (Disaggregatation Of Revenue By Major Source) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R44": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ContractWithCustomerAssetAndLiabilityTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018_srt_ProductOrServiceAxis_gpp_ServiceAndLeaseAgreementsMember",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ContractWithCustomerLiability",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40303 - Disclosure - Revenue (Changes in Unearned Revenue From Service Agreements) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
     "shortName": "Revenue (Changes in Unearned Revenue From Service Agreements) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ContractWithCustomerAssetAndLiabilityTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018_srt_ProductOrServiceAxis_gpp_ServiceAndLeaseAgreementsMember",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ContractWithCustomerLiability",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R45": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnits",
      "reportCount": 1,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40401 - Disclosure - Dispositions (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
     "shortName": "Dispositions (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2018_To_12_31_2018_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember",
      "decimals": "-5",
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R46": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2018_To_12_31_2018",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "gpp:PartnersCapitalAccountRetirementOfUnits",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40402 - Disclosure - Dispositions (Summary Of Assets And Liabilities Disposed Of) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
     "shortName": "Dispositions (Summary Of Assets And Liabilities Disposed Of) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_11_15_2018_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_gpp_EthanolPlantsInBlufftonIndianaLakotaIowaAndRigaMichiganMember",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R47": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40602 - Disclosure - Property and Equipment (Schedule of Components of Property and Equipment) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
     "shortName": "Property and Equipment (Schedule of Components of Property and Equipment) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R48": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NumberOfReportingUnits",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit110",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40701 - Disclosure - Goodwill (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureGoodwillNarrativeDetails",
     "shortName": "Goodwill (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NumberOfReportingUnits",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit110",
      "xsiNil": "false"
     }
    },
    "R49": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DeferredFinanceCostsNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40801 - Disclosure - Debt (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
     "shortName": "Debt (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DeferredFinanceCostsNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R5": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapital",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00300 - Statement - Consolidated Statements of Partners' Deficit",
     "role": "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit",
     "shortName": "Consolidated Statements of Partners' Deficit",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2016",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:PartnersCapital",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R50": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40802 - Disclosure - Debt (Schedule of Long-Term Debt Repayments) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails",
     "shortName": "Debt (Schedule of Long-Term Debt Repayments) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R51": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationCurrent",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40901 - Disclosure - Asset Retirement Obligations (Schedule of Change in the Liability for the Asset Retirement Obligations) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails",
     "shortName": "Asset Retirement Obligations (Schedule of Change in the Liability for the Asset Retirement Obligations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationLiabilitiesIncurred",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R52": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41001 - Disclosure - Unit-Based Compensation (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails",
     "shortName": "Unit-Based Compensation (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R53": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41002 - Disclosure - Unit-Based Compensation (Schedule of Non-vested Unit-based Award Activity) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails",
     "shortName": "Unit-Based Compensation (Schedule of Non-vested Unit-based Award Activity) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R54": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnits",
      "reportCount": 1,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41101 - Disclosure - Partners' Deficit (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
     "shortName": "Partners' Deficit (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "lang": "en-US",
      "name": "gpp:DistributionMadeToLimitedPartnerAndGenearlPartnerThresholdInDaysAfterEndOfEachCalendarQuarterDistributionPayment",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R55": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnits",
      "reportCount": 1,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41103 - Disclosure - Partners' Deficit (Rollforward of the Number of Common Limited Partner Units Outstanding) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
     "shortName": "Partners' Deficit (Rollforward of the Number of Common Limited Partner Units Outstanding) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "INF",
      "lang": "en-US",
      "name": "us-gaap:PartnersCapitalAccountUnitsUnitbasedCompensation",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R56": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_gpp_MinimumQuarterlyCashDistributionMember_us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis_gpp_CommonUnitholdersMember",
      "decimals": "3",
      "first": true,
      "lang": "en-US",
      "name": "gpp:DistributionMadeToLimitedPartnerDistributionsMarginalPercentageInterestInDistribution",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit14",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41104 - Disclosure - Partners' Deficit (Summary of the Percentage Allocations of Available Cash from Operating Surplus Based on Specified Target Distribution Levels) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
     "shortName": "Partners' Deficit (Summary of the Percentage Allocations of Available Cash from Operating Surplus Based on Specified Target Distribution Levels) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_gpp_MinimumQuarterlyCashDistributionMember_us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis_gpp_CommonUnitholdersMember",
      "decimals": "3",
      "first": true,
      "lang": "en-US",
      "name": "gpp:DistributionMadeToLimitedPartnerDistributionsMarginalPercentageInterestInDistribution",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit14",
      "xsiNil": "false"
     }
    },
    "R57": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_10_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DistributionMadeToLimitedPartnerDeclarationDate",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41105 - Disclosure - Partners' Deficit (Summary Of Quarterly Cash Distributions Declarations, Payments And Scheduled Payments) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsDetails",
     "shortName": "Partners' Deficit (Summary Of Quarterly Cash Distributions Declarations, Payments And Scheduled Payments) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_10_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DistributionMadeToLimitedPartnerDeclarationDate",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R58": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DistributionMadeToLimitedPartnerCashDistributionsPaid",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41106 - Disclosure - Partners' Deficit (Schedule of Allocation of Total Cash Distributions to the General and Limited Partners) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
     "shortName": "Partners' Deficit (Schedule of Allocation of Total Cash Distributions to the General and Limited Partners) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DistributionMadeToLimitedPartnerCashDistributionsPaid",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R59": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41201 - Disclosure - Earnings Per Unit (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
     "shortName": "Earnings Per Unit (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit1",
      "xsiNil": "false"
     }
    },
    "R6": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NetIncomeLoss",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00400 - Statement - Consolidated Statements of Cash Flows",
     "role": "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows",
     "shortName": "Consolidated Statements of Cash Flows",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:DepreciationDepletionAndAmortization",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R60": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DistributionMadeToLimitedPartnerCashDistributionsDeclared",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41202 - Disclosure - Earnings Per Unit (Schedule of Basic and Diluted Earnings Per Unit) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
     "shortName": "Earnings Per Unit (Schedule of Basic and Diluted Earnings Per Unit) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "gpp:EarningsLessThanDistributions",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R61": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DeferredTaxAssetsGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41301 - Disclosure - Income Taxes (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureIncomeTaxesNarrativeDetails",
     "shortName": "Income Taxes (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DeferredTaxAssetsGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R62": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CurrentIncomeTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41302 - Disclosure - Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails",
     "shortName": "Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CurrentIncomeTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R63": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41303 - Disclosure - Income Taxes (Schedule Of Differences Between The Income Tax Expense (Benefit) Computed At The Statutory Federal income Tax Rate And As Presented On The Consolidated Statements Of Operations) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails",
     "shortName": "Income Taxes (Schedule Of Differences Between The Income Tax Expense (Benefit) Computed At The Statutory Federal income Tax Rate And As Presented On The Consolidated Statements Of Operations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R64": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseRightOfUseAsset",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41401 - Disclosure - Commitments and Contingencies (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
     "shortName": "Commitments and Contingencies (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:ShortTermLeaseCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R65": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseRightOfUseAsset",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41402 - Disclosure - Commitments and Contingencies (Impact On Consolidated Balance Sheet From Adoption Of New Lease Standard) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
     "shortName": "Commitments and Contingencies (Impact On Consolidated Balance Sheet From Adoption Of New Lease Standard) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:ImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_1_1_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseLiabilityCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R66": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41403 - Disclosure - Commitments and Contingencies (Components Of Lease Expense) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails",
     "shortName": "Commitments and Contingencies (Components Of Lease Expense) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R67": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "gpp:CashPaidForAmountsIncludedInMeasurmentOfLeaseLiabilitiesOperatingCashFlowsFromOperatingLease",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41404 - Disclosure - Commitments and Contingencies (Supplemental Cash Flow Information Related To Operating Leases) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalCashFlowInformationRelatedToOperatingLeasesDetails",
     "shortName": "Commitments and Contingencies (Supplemental Cash Flow Information Related To Operating Leases) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "gpp:CashPaidForAmountsIncludedInMeasurmentOfLeaseLiabilitiesOperatingCashFlowsFromOperatingLease",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R68": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:SupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41405 - Disclosure - Commitments and Contingencies (Supplemental Balance Sheet Information Related To Operating Leases) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails",
     "shortName": "Commitments and Contingencies (Supplemental Balance Sheet Information Related To Operating Leases) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:SupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R69": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41406 - Disclosure - Commitments and Contingencies (Schedule of Aggregate Minimum Lease Payments) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails",
     "shortName": "Commitments and Contingencies (Schedule of Aggregate Minimum Lease Payments) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R7": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10101 - Disclosure - Basis of Presentation and Description of Business",
     "role": "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusiness",
     "shortName": "Basis of Presentation and Description of Business",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R70": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41407 - Disclosure - Commitments and Contingencies (Schedule of Aggregate Minimum Lease Payments Remaining) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails",
     "shortName": "Commitments and Contingencies (Schedule of Aggregate Minimum Lease Payments Remaining) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2018",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R71": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseLeaseIncomeLeasePayments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41408 - Disclosure - Commitments and Contingencies (Components Of Lease Revenue) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails",
     "shortName": "Commitments and Contingencies (Components Of Lease Revenue) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OperatingLeaseLeaseIncomeLeasePayments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R72": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:OperatingLeasesOfLessorTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019_srt_ProductOrServiceAxis_gpp_AmendedStorageAndThroughputAgreementMember",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41409 - Disclosure - Commitments and Contingencies (Summary of Minimum Future Rental Revenue) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails",
     "shortName": "Commitments and Contingencies (Summary of Minimum Future Rental Revenue) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "gpp:OperatingLeasesOfLessorTableTextBlock",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019_srt_ProductOrServiceAxis_gpp_AmendedStorageAndThroughputAgreementMember",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R73": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherCommitmentDueInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41410 - Disclosure - Commitments and Contingencies (Schedule of Aggregate Minimum Agreement Payments) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails",
     "shortName": "Commitments and Contingencies (Schedule of Aggregate Minimum Agreement Payments) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherCommitmentDueInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R74": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-5",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41501 - Disclosure - Related Party Transactions (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails",
     "shortName": "Related Party Transactions (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": "-5",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R75": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestments",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41601 - Disclosure - Equity Method Investment (Narrative) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
     "shortName": "Equity Method Investment (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "As_Of_12_31_2019_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_us-gaap_CorporateJointVentureMember",
      "decimals": "-5",
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R76": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:EquityMethodInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_12_1_2018_To_11_30_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41602 - Disclosure - Equity Method Investment (Combined Summary Of Operations Data For Equity Investment) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails",
     "shortName": "Equity Method Investment (Combined Summary Of Operations Data For Equity Investment) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:EquityMethodInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_12_1_2018_To_11_30_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R77": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_10_1_2019_To_12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "Unit12",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41701 - Disclosure - Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details)",
     "role": "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
     "shortName": "Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_10_1_2019_To_12_31_2019",
      "decimals": "-3",
      "lang": "en-US",
      "name": "us-gaap:CostsAndExpenses",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit12",
      "xsiNil": "false"
     }
    },
    "R8": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10201 - Disclosure - Summary Of Significant Accounting Policies",
     "role": "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPolicies",
     "shortName": "Summary Of Significant Accounting Policies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R9": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10301 - Disclosure - Revenue",
     "role": "http://www.gpreinc.com/role/DisclosureRevenue",
     "shortName": "Revenue",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "body",
       "html"
      ],
      "baseRef": "gpp-20191231x10k.htm",
      "contextRef": "Duration_1_1_2019_To_12_31_2019",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 73,
   "tag": {
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cover page.",
        "label": "Document and Entity Information [Abstract]"
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "dei_CurrentFiscalYearEndDate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "End date of current fiscal year in the format --MM-DD.",
        "label": "Current Fiscal Year End Date",
        "terseLabel": "Current fiscal year end date"
       }
      }
     },
     "localname": "CurrentFiscalYearEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "gMonthDayItemType"
    },
    "dei_DocumentAnnualReport": {
     "auth_ref": [
      "r364"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as an annual report.",
        "label": "Document Annual Report"
       }
      }
     },
     "localname": "DocumentAnnualReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentFiscalPeriodFocus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.",
        "label": "Document Fiscal Period Focus",
        "terseLabel": "Document fiscal period focus"
       }
      }
     },
     "localname": "DocumentFiscalPeriodFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fiscalPeriodItemType"
    },
    "dei_DocumentFiscalYearFocus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.",
        "label": "Document Fiscal Year Focus",
        "terseLabel": "Document fiscal year focus"
       }
      }
     },
     "localname": "DocumentFiscalYearFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "gYearItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document period end date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentTransitionReport": {
     "auth_ref": [
      "r363"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as a transition report.",
        "label": "Document Transition Report"
       }
      }
     },
     "localname": "DocumentTransitionReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity central index key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.",
        "label": "Entity Common Stock, Shares Outstanding",
        "terseLabel": "Entity common stock, shares outstanding"
       }
      }
     },
     "localname": "EntityCommonStockSharesOutstanding",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "sharesItemType"
    },
    "dei_EntityCurrentReportingStatus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Current Reporting Status"
       }
      }
     },
     "localname": "EntityCurrentReportingStatus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.",
        "label": "Entity [Domain]",
        "terseLabel": "Entity [Domain]"
       }
      }
     },
     "localname": "EntityDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityExTransitionPeriod": {
     "auth_ref": [
      "r370"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.",
        "label": "Entity Ex Transition Period"
       }
      }
     },
     "localname": "EntityExTransitionPeriod",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityFilerCategory": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Filer Category",
        "terseLabel": "Entity filer category"
       }
      }
     },
     "localname": "EntityFilerCategory",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "filerCategoryItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation, State or Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityInteractiveDataCurrent": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).",
        "label": "Entity Interactive Data Current"
       }
      }
     },
     "localname": "EntityInteractiveDataCurrent",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityPublicFloat": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
        "label": "Entity Public Float"
       }
      }
     },
     "localname": "EntityPublicFloat",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity registrant name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityShellCompany": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
        "label": "Entity Shell Company"
       }
      }
     },
     "localname": "EntityShellCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntitySmallBusiness": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).",
        "label": "Entity Small Business"
       }
      }
     },
     "localname": "EntitySmallBusiness",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_EntityVoluntaryFilers": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.",
        "label": "Entity Voluntary Filers"
       }
      }
     },
     "localname": "EntityVoluntaryFilers",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.",
        "label": "Entity Well-known Seasoned Issuer"
       }
      }
     },
     "localname": "EntityWellKnownSeasonedIssuer",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_LegalEntityAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The set of legal entities associated with a report.",
        "label": "Legal Entity [Axis]"
       }
      }
     },
     "localname": "LegalEntityAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_Security12bTitle": {
     "auth_ref": [
      "r361"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Title of a 12(b) registered security.",
        "label": "Title of 12(b) Security"
       }
      }
     },
     "localname": "Security12bTitle",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "securityTitleItemType"
    },
    "dei_SecurityExchangeName": {
     "auth_ref": [
      "r362"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the Exchange on which a security is registered.",
        "label": "Security Exchange Name"
       }
      }
     },
     "localname": "SecurityExchangeName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarExchangeCodeItemType"
    },
    "dei_TradingSymbol": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Trading symbol of an instrument as listed on an exchange.",
        "label": "Trading Symbol",
        "terseLabel": "Trading symbol"
       }
      }
     },
     "localname": "TradingSymbol",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "tradingSymbolItemType"
    },
    "gpp_AmendedRailTransportationServicesAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amended Rail Transportation Services Agreement [Member]",
        "label": "Amended Rail Transportation Services Agreement [Member]",
        "terseLabel": "Amended Rail Transportation Services Agreement [Member]"
       }
      }
     },
     "localname": "AmendedRailTransportationServicesAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_AmendedStorageAndThroughputAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amended Storage And Throughput Agreement [Member]",
        "label": "Amended Storage And Throughput Agreement [Member]",
        "terseLabel": "Amended Storage And Throughput Agreement [Member]"
       }
      }
     },
     "localname": "AmendedStorageAndThroughputAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_AverageTruckingMilesTraveledFromReceiptPointToDeliveryPoint": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Average Trucking Miles Traveled From Receipt Point To Delivery Point",
        "label": "Average Trucking Miles Traveled From Receipt Point To Delivery Point",
        "terseLabel": "Average trucking miles traveled from receipt point to delivery point"
       }
      }
     },
     "localname": "AverageTruckingMilesTraveledFromReceiptPointToDeliveryPoint",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "lengthItemType"
    },
    "gpp_BasisOfPresentationAndSignificantAccountingPoliciesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Basis of Presentation and Significant Accounting Policies [Line Items]",
        "label": "Basis of Presentation and Significant Accounting Policies [Line Items]"
       }
      }
     },
     "localname": "BasisOfPresentationAndSignificantAccountingPoliciesLineItems",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_BasisOfPresentationAndSignificantAccountingPoliciesTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Basis of Presentation and Significant Accounting Policies [Table]",
        "label": "Basis of Presentation and Significant Accounting Policies [Table]"
       }
      }
     },
     "localname": "BasisOfPresentationAndSignificantAccountingPoliciesTable",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_BirminghamBioenergyPartnersLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Birmingham BioEnergy Partners LLC [Member]",
        "label": "Birmingham Bioenergy Partners Llc [Member]",
        "terseLabel": "Birmingham BioEnergy Partners LLC [Member]"
       }
      }
     },
     "localname": "BirminghamBioenergyPartnersLlcMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_BirminghamTerminalServicesAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Birmingham Terminal Services Agreement [Member]",
        "label": "Birmingham Terminal Services Agreement [Member]",
        "terseLabel": "Birmingham Terminal Services Agreement [Member]"
       }
      }
     },
     "localname": "BirminghamTerminalServicesAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CashDistributionThereafterMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash Distribution, Thereafter [Member]",
        "label": "Cash Distribution Thereafter [Member]",
        "terseLabel": "Thereafter [Member]"
       }
      }
     },
     "localname": "CashDistributionThereafterMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CashPaidForAmountsIncludedInMeasurmentOfLeaseLiabilitiesOperatingCashFlowsFromOperatingLease": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash Paid For Amounts Included In The Measurment Of Lease Liabilities, Operating Cash Flows From Operating Lease",
        "label": "Cash Paid For Amounts Included In The Measurment Of Lease Liabilities, Operating Cash Flows From Operating Lease",
        "terseLabel": "Operating cash flows from operating leases"
       }
      }
     },
     "localname": "CashPaidForAmountsIncludedInMeasurmentOfLeaseLiabilitiesOperatingCashFlowsFromOperatingLease",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalCashFlowInformationRelatedToOperatingLeasesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_CommonUnitholdersMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Common Unitholders [Member]",
        "label": "Common Unitholders [Member]",
        "terseLabel": "Common Unitholders [Member]"
       }
      }
     },
     "localname": "CommonUnitholdersMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CommonUnitsGreenPlainsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Common Units - Green Plains [Member]",
        "label": "Common Units Green Plains [Member]",
        "terseLabel": "Common Units - Green Plains [Member]"
       }
      }
     },
     "localname": "CommonUnitsGreenPlainsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CommonUnitsPublicMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Common Units - Public [Member]",
        "label": "Common Units Public [Member]",
        "terseLabel": "Common Units - Public [Member]"
       }
      }
     },
     "localname": "CommonUnitsPublicMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ComputerAndSoftwareMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Computer And Software [Member]",
        "label": "Computer And Software [Member]",
        "terseLabel": "Computers And Software [Member]"
       }
      }
     },
     "localname": "ComputerAndSoftwareMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ComputerEquipmentFurnitureAndFixturesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Computer Equipment, Furniture and Fixtures [Member]",
        "label": "Computer Equipment Furniture And Fixtures [Member]",
        "terseLabel": "Computer Equipment, Furniture and Fixtures [Member]"
       }
      }
     },
     "localname": "ComputerEquipmentFurnitureAndFixturesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CreditExpiringJune302020Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Credit Expiring June 30, 2020 [Member]",
        "label": "Credit Expiring June302020 [Member]",
        "terseLabel": "Credit Expiring June 30, 2020 [Member]"
       }
      }
     },
     "localname": "CreditExpiringJune302020Member",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_CreditExpiringMarch312020Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Credit Expiring March 31, 2020 [Member]",
        "label": "Credit Expiring March312020 [Member]",
        "terseLabel": "Credit Expiring March 31, 2020 [Member]"
       }
      }
     },
     "localname": "CreditExpiringMarch312020Member",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_DisposalGroupIncludingDiscontinuedOperationAdditionalConsideration": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disposal Group, Including Discontinued Operation, Additional Consideration",
        "label": "Disposal Group, Including Discontinued Operation, Additional Consideration",
        "terseLabel": "Additional consideration received"
       }
      }
     },
     "localname": "DisposalGroupIncludingDiscontinuedOperationAdditionalConsideration",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligations": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disposal Group Including Discontinued Operation Asset Retirement Obligations",
        "label": "Disposal Group Including Discontinued Operation Asset Retirement Obligations",
        "terseLabel": "Asset retirement obligations"
       }
      }
     },
     "localname": "DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligations",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_DistributionMadeToLimitedPartnerAndGenearlPartnerFirstQualifierPercentageDistribution": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distribution made to limited partner and general partner, first qualifier percentage distribution until the partnership distributes an amount equal to the minimum quarterly distribution for that quarter on each outstanding common unit.",
        "label": "Distribution Made To Limited Partner And Genearl Partner First Qualifier Percentage Distribution",
        "terseLabel": "Partnership distributions, first qualifier, percentage distribution on each outstanding unit"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerAndGenearlPartnerFirstQualifierPercentageDistribution",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_DistributionMadeToLimitedPartnerAndGenearlPartnerThresholdInDaysAfterEndOfEachCalendarQuarterDistributionPayment": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distribution Made To Limited Partner And Genearl Partner Threshold In Days After End Of Each Calendar Quarter Distribution Payment",
        "label": "Distribution Made To Limited Partner And Genearl Partner Threshold In Days After End Of Each Calendar Quarter Distribution Payment"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerAndGenearlPartnerThresholdInDaysAfterEndOfEachCalendarQuarterDistributionPayment",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "gpp_DistributionMadeToLimitedPartnerDistributionsMarginalPercentageInterestInDistribution": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distribution Made To Limited Partner Distributions, Marginal Percentage Interest In Distribution",
        "label": "Distribution Made To Limited Partner Distributions, Marginal Percentage Interest In Distribution",
        "terseLabel": "Marginal Percentage Interest In Distribution"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDistributionsMarginalPercentageInterestInDistribution",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_DistributionMadeToLimitedPartnersAndGeneralPartnerCashDistributionsDeclared": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distribution Made to Limited Partners and General Partner, Cash Distributions Declared",
        "label": "Distribution Made to Limited Partners and General Partner, Cash Distributions Declared",
        "negatedLabel": "Quarterly cash distributions to unitholders"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnersAndGeneralPartnerCashDistributionsDeclared",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_DistributionsMadeToLimitedPartnersAndGeneralPartnerLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distributions Made to Limited Partners And General Partner [Line Items]",
        "label": "Distributions Made to Limited Partners And General Partner [Line Items]"
       }
      }
     },
     "localname": "DistributionsMadeToLimitedPartnersAndGeneralPartnerLineItems",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_DistributionsMadeToLimitedPartnersAndGeneralPartnerTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distributions Made to Limited Partners And General Partner [Table]",
        "label": "Distributions Made to Limited Partners And General Partner [Table]"
       }
      }
     },
     "localname": "DistributionsMadeToLimitedPartnersAndGeneralPartnerTable",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_EarningsLessThanDistributions": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Earnings Less Than Distributions",
        "label": "Earnings Less Than Distributions",
        "negatedLabel": "Earnings (less than) in excess of distributions"
       }
      }
     },
     "localname": "EarningsLessThanDistributions",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_EarningsPerUnitLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Earnings Per Unit [Line Items]",
        "label": "Earnings Per Unit [Line Items]"
       }
      }
     },
     "localname": "EarningsPerUnitLineItems",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_EarningsPerUnitTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Earnings Per Unit [Table]",
        "label": "Earnings Per Unit [Table]"
       }
      }
     },
     "localname": "EarningsPerUnitTable",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "gpp_EthanolPlantsInBlufftonIndianaLakotaIowaAndRigaMichiganMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ethanol Plants In Bluffton Indiana Lakota Iowa And Riga Michigan [Member]",
        "label": "Ethanol Plants In Bluffton Indiana Lakota Iowa And Riga Michigan [Member]",
        "terseLabel": "Ethanol Plants In Bluffton Indiana Lakota Iowa And Riga Michigan [Member]"
       }
      }
     },
     "localname": "EthanolPlantsInBlufftonIndianaLakotaIowaAndRigaMichiganMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedRailTransportationServicesAgreementLogisticalOperationsManagementAndOtherServicesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Rail Transportation Services Agreement, Logistical Operations Management And Other Services [Member]",
        "label": "Fee Based Rail Transportation Services Agreement Logistical Operations Management And Other Services [Member]",
        "terseLabel": "Fee-based Rail Transportation Services Agreement, Logistical Operations Management And Other Services [Member]"
       }
      }
     },
     "localname": "FeeBasedRailTransportationServicesAgreementLogisticalOperationsManagementAndOtherServicesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedRailTransportationServicesAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Rail Transportation Services Agreement [Member]",
        "label": "Fee Based Rail Transportation Services Agreement [Member]",
        "terseLabel": "Fee-based Rail Transportation Services Agreement [Member]"
       }
      }
     },
     "localname": "FeeBasedRailTransportationServicesAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedStorageAndThroughputAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Storage And Throughput Agreement [Member]",
        "label": "Fee Based Storage And Throughput Agreement [Member]",
        "terseLabel": "Fee-based Storage and Throughput Agreement [Member]"
       }
      }
     },
     "localname": "FeeBasedStorageAndThroughputAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedStorageAndThroughputAndRailTransporatationAgreementsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Storage and Throughput and Rail Transporatation Agreements [Member]",
        "label": "Fee Based Storage And Throughput And Rail Transporatation Agreements [Member]",
        "terseLabel": "Fee-based Storage and Throughput and Rail Transporatation Agreements [Member]"
       }
      }
     },
     "localname": "FeeBasedStorageAndThroughputAndRailTransporatationAgreementsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedTruckingTransportationAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Trucking Transportation Agreement [Member]",
        "label": "Fee Based Trucking Transportation Agreement [Member]",
        "terseLabel": "Fee-based Trucking Transportation Agreement [Member]"
       }
      }
     },
     "localname": "FeeBasedTruckingTransportationAgreementMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FeeBasedTruckingTransportationAndTerminalServicesAgreementsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fee-based Trucking Transportation and Terminal Services Agreements [Member]",
        "label": "Fee Based Trucking Transportation And Terminal Services Agreements [Member]",
        "terseLabel": "Fee-based Trucking Transportation and Terminal Services Agreements [Member]"
       }
      }
     },
     "localname": "FeeBasedTruckingTransportationAndTerminalServicesAgreementsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_FirstTargetCashDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "First Target Cash Distribution [Member]",
        "label": "First Target Cash Distribution [Member]",
        "terseLabel": "First Target Distribution [Member]"
       }
      }
     },
     "localname": "FirstTargetCashDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_GainLossOnAssignmentOfOperatingLeases": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 4.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Gain (Loss) On Assignment Of Operating Leases",
        "label": "Gain (Loss) On Assignment Of Operating Leases",
        "negatedLabel": "Gain on assignment of operating leases"
       }
      }
     },
     "localname": "GainLossOnAssignmentOfOperatingLeases",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_GeneralPartnerDistributionNotIncludingIncentiveDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "General Partner: Distribution Not Including Incentive Distribution [Member]",
        "label": "General Partner Distribution Not Including Incentive Distribution [Member]",
        "terseLabel": "General Partner: Distribution Not Including Incentive Distribution [Member]"
       }
      }
     },
     "localname": "GeneralPartnerDistributionNotIncludingIncentiveDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_GeneralPartnerIncentiveDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "General Partner: Incentive Distribution [Member]",
        "label": "General Partner Incentive Distribution [Member]",
        "terseLabel": "General Partner: Incentive Distribution [Member]"
       }
      }
     },
     "localname": "GeneralPartnerIncentiveDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_GeneralPartnerSInterestPercent": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "General Partner's Interest Percent",
        "label": "General Partner's Interest Percent",
        "terseLabel": "General partner's interest"
       }
      }
     },
     "localname": "GeneralPartnerSInterestPercent",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_GreenPlainsInc.Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Green Plains Inc. [Member]",
        "label": "Green Plains Inc. [Member]",
        "terseLabel": "Green Plains Inc. [Member]"
       }
      }
     },
     "localname": "GreenPlainsInc.Member",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_GreenPlainsTradeGroupLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Green Plains Trade Group LLC [Member]",
        "label": "Green Plains Trade Group Llc [Member]",
        "terseLabel": "Green Plains Trade Group LLC [Member]"
       }
      }
     },
     "localname": "GreenPlainsTradeGroupLlcMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_GreenPlainsTradeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Green Plains Trade [Member]",
        "label": "Green Plains Trade [Member]",
        "terseLabel": "Green Plains Trade [Member]"
       }
      }
     },
     "localname": "GreenPlainsTradeMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Impact On Consolidated Balance Sheet From Adoption Of New Lease Standard [Table Text Block]",
        "label": "Impact On Consolidated Balance Sheet From Adoption Of New Lease Standard [Table Text Block]",
        "terseLabel": "Impact On Consolidated Balance Sheet From Adoption Of New Lease Standard"
       }
      }
     },
     "localname": "ImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_IncentiveDistributionPercentageOfAvailableCashDistributedFromOperatingSurplus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Incentive Distribution, PercentageIncentive Distribution, Percentage Of Available Cash Distributed From Operating Surplus",
        "label": "Incentive Distribution, Percentage Of Available Cash Distributed From Operating Surplus",
        "terseLabel": "Incentive distribution, percentage of available cash distributed from operating surplus"
       }
      }
     },
     "localname": "IncentiveDistributionPercentageOfAvailableCashDistributedFromOperatingSurplus",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_InterestCoverageRatio": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest coverage ratio.",
        "label": "Interest Coverage Ratio",
        "terseLabel": "Interest coverage ratio"
       }
      }
     },
     "localname": "InterestCoverageRatio",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "gpp_LeasingRevenuesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Leasing Revenues [Member]",
        "label": "Leasing Revenues [Member]",
        "terseLabel": "Leasing Revenues [Member]"
       }
      }
     },
     "localname": "LeasingRevenuesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_LesseeOperatingLeaseLeaseNotYetCommencedEstimatedFutureMinimumLeaseCommitments": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Lessee, Operating Lease, Lease Not yet Commenced, Estimated Future Minimum Lease Commitments",
        "label": "Lessee, Operating Lease, Lease Not yet Commenced, Estimated Future Minimum Lease Commitments",
        "terseLabel": "Lease not yet commenced, estimated future minimum lease commitments"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLeaseNotYetCommencedEstimatedFutureMinimumLeaseCommitments",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_LimitedPartnerUnitsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Limited Partner Units [Member]",
        "label": "Limited Partner Units [Member]",
        "terseLabel": "Limited Partner Units [Member]"
       }
      }
     },
     "localname": "LimitedPartnerUnitsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_LineOfCreditFacilityAdditionalAmountAvailableWithoutConsentOfLenders": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate additional amount available under the credit facility without the consent of the lenders.",
        "label": "Line of Credit Facility, Additional Amount Available Without Consent of Lenders",
        "terseLabel": "Additional amount available under credit facility without consent of the lenders"
       }
      }
     },
     "localname": "LineOfCreditFacilityAdditionalAmountAvailableWithoutConsentOfLenders",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_LineOfCreditFacilityCapacityAvailableForLettersOfCreditSublimit": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sublimit for capacity available for letters of credit under the credit facility as of the balance sheet date.",
        "label": "Line of Credit Facility, Capacity Available for Letters of Credit, Sublimit",
        "terseLabel": "Sublimit available for letters of credit under credit facility"
       }
      }
     },
     "localname": "LineOfCreditFacilityCapacityAvailableForLettersOfCreditSublimit",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_LineOfCreditFacilityCapacityAvailableForSwingLineLoansSublimit": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sublimit of capacity available for swing line loans under the credit facility.",
        "label": "Line of Credit Facility, Capacity Available for Swing Line Loans, Sublimit",
        "terseLabel": "Sublimit available for swing line loans under credit facility"
       }
      }
     },
     "localname": "LineOfCreditFacilityCapacityAvailableForSwingLineLoansSublimit",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_MinimumQuarterlyCashDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Quarterly Cash Distribution [Member]",
        "label": "Minimum Quarterly Cash Distribution [Member]",
        "terseLabel": "Minimum Quarterly Distribution [Member]"
       }
      }
     },
     "localname": "MinimumQuarterlyCashDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_MinimumQuarterlyCashDistributionsPartnershipIncreaseDecrease": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Quarterly Cash Distributions Partnership Increase Decrease",
        "label": "Minimum Quarterly Cash Distributions Partnership Increase Decrease",
        "terseLabel": "Reduction in minimum quarterly cash distributions partnership"
       }
      }
     },
     "localname": "MinimumQuarterlyCashDistributionsPartnershipIncreaseDecrease",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_MinimumVolumeCommitmentCredit": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Volume Commitment Credit",
        "label": "Minimum Volume Commitment Credit",
        "terseLabel": "Minimum volume commitment credit"
       }
      }
     },
     "localname": "MinimumVolumeCommitmentCredit",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_MinimumVolumeCommitmentCreditExpiredInPeriod": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Volume Commitment Credit, Expired In Period",
        "label": "Minimum Volume Commitment Credit, Expired In Period",
        "terseLabel": "Minimum volume commitment credit, expired in period"
       }
      }
     },
     "localname": "MinimumVolumeCommitmentCreditExpiredInPeriod",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_MinimumVolumeCommitmentCreditsUntilizedInPeriod": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Volume Commitment Credits Untilized In Period",
        "label": "Minimum Volume Commitment Credits Untilized In Period",
        "terseLabel": "Minimum volume commitment credits untilized in period"
       }
      }
     },
     "localname": "MinimumVolumeCommitmentCreditsUntilizedInPeriod",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_MinimumVolumeCommitmentThroughputCapacity": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum Volume Commitment, Throughput Capacity",
        "label": "Minimum Volume Commitment, Throughput Capacity",
        "terseLabel": "Quarterly minimum volume commitment, throughput capacity (in gallons)"
       }
      }
     },
     "localname": "MinimumVolumeCommitmentThroughputCapacity",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "volumeItemType"
    },
    "gpp_NumberOfBarrelsOfStorage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number Of Barrels Of Storage",
        "label": "Number Of Barrels Of Storage",
        "terseLabel": "Number of barrels of storage"
       }
      }
     },
     "localname": "NumberOfBarrelsOfStorage",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails"
     ],
     "xbrltype": "volumeItemType"
    },
    "gpp_NumberOfRailcars": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number Of Railcars",
        "label": "Number Of Railcars"
       }
      }
     },
     "localname": "NumberOfRailcars",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "gpp_NumberOfTrainCarUnits": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "EquityMethodInvestmentOwnershipPercentage",
        "label": "Number Of Train Car Units",
        "terseLabel": "Number of train car units"
       }
      }
     },
     "localname": "NumberOfTrainCarUnits",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails"
     ],
     "xbrltype": "positiveIntegerItemType"
    },
    "gpp_OperatingLeaseVariableLeaseIncomeLoss": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingLeaseLeaseIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Operating Lease Variable Lease Income (Loss)",
        "label": "Operating Lease Variable Lease Income (Loss)",
        "terseLabel": "Variable lease revenue"
       }
      }
     },
     "localname": "OperatingLeaseVariableLeaseIncomeLoss",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_OperatingLeasesOfLessorTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Operating Leases of Lessor [Table Text Block]",
        "label": "Operating Leases of Lessor [Table Text Block]",
        "terseLabel": "Summary of Minimum Future Rental Revenue"
       }
      }
     },
     "localname": "OperatingLeasesOfLessorTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_PartnersCapitalAccountDisposition": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Partners Capital Account, Disposition",
        "label": "Partners Capital Account, Disposition",
        "terseLabel": "Disposition of Bluffton, Lakota, and Riga assets"
       }
      }
     },
     "localname": "PartnersCapitalAccountDisposition",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_PartnersCapitalAccountRetirementOfUnits": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Partners Capital Account Retirement Of Units",
        "label": "Partners Capital Account Retirement Of Units",
        "negatedTerseLabel": "Retirement of units",
        "terseLabel": "Total units retired"
       }
      }
     },
     "localname": "PartnersCapitalAccountRetirementOfUnits",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_PartnersCapitalAccountUnitsUnitBasedConversionOfSubordiantedUnits": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Partners Capital Account Units Unit-based, Conversion Of Subordianted Units",
        "label": "Partners Capital Account Units Unit-based, Conversion Of Subordianted Units",
        "terseLabel": "Conversion of subordianted units"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnitsUnitBasedConversionOfSubordiantedUnits",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "gpp_PartnersCapitalAccountUnitsUnitBasedRetirementOfCommonUnits": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Partners Capital Account Units Unit-based, Retirement Of Common Units",
        "label": "Partners Capital Account Units Unit-based, Retirement Of Common Units",
        "negatedLabel": "Retirement of common units"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnitsUnitBasedRetirementOfCommonUnits",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "gpp_PercentOfEntitledDistributionsPriorToPartnershipSLiquidation": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percent Of Entitled Distributions Prior To Partnership's Liquidation",
        "label": "Percent Of Entitled Distributions Prior To Partnership's Liquidation"
       }
      }
     },
     "localname": "PercentOfEntitledDistributionsPriorToPartnershipSLiquidation",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_PercentOfPartnershipSRevenueMajorCustomersBenchmark": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percent Of Partnership's Revenue, Major Customers Benchmark",
        "label": "Percent Of Partnership's Revenue, Major Customers Benchmark",
        "terseLabel": "Percent of partnership's revenue, major customers benchmark"
       }
      }
     },
     "localname": "PercentOfPartnershipSRevenueMajorCustomersBenchmark",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_PercentOfU.s.GasolineMarket": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percent Of U.S. Gasoline Market",
        "label": "Percent Of U.S. Gasoline Market",
        "terseLabel": "Percent of U.S. gasoline market"
       }
      }
     },
     "localname": "PercentOfU.s.GasolineMarket",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "gpp_ProceedsFromAssignmentOfOperatingLeases": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Proceeds From Assignment Of Operating Leases",
        "label": "Proceeds From Assignment Of Operating Leases",
        "terseLabel": "Proceeds from the assignment of operating leases"
       }
      }
     },
     "localname": "ProceedsFromAssignmentOfOperatingLeases",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_ProductionCapacity": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Production Capacity",
        "label": "Production Capacity",
        "terseLabel": "Ethanol production capacity (in gallons)"
       }
      }
     },
     "localname": "ProductionCapacity",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "volumeItemType"
    },
    "gpp_ProductsOrServicesAffiliateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Products Or Services, Affiliate [Member]",
        "label": "Products Or Services Affiliate [Member]",
        "terseLabel": "Affiliate [Member]"
       }
      }
     },
     "localname": "ProductsOrServicesAffiliateMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ProductsOrServicesNonAffiliateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Products Or Services, Non-affiliate [Member]",
        "label": "Products Or Services Non Affiliate [Member]",
        "terseLabel": "Non-affiliate [Member]"
       }
      }
     },
     "localname": "ProductsOrServicesNonAffiliateMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_PromissoryNoteIMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Promissory Note I [Member]",
        "label": "Promissory Note I [Member]",
        "terseLabel": "Promissory Note I [Member]"
       }
      }
     },
     "localname": "PromissoryNoteIMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_PromissoryNoteIiMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Promissory Note II [Member]",
        "label": "Promissory Note Ii [Member]",
        "terseLabel": "Promissory Note II [Member]"
       }
      }
     },
     "localname": "PromissoryNoteIiMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_PromissoryNoteMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Promissory Note [Member]",
        "label": "Promissory Note [Member]",
        "terseLabel": "Promissory Note I [Member]"
       }
      }
     },
     "localname": "PromissoryNoteMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_PropertyAndEquipmentSaleInAccountsReceivable": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Property And Equipment Sale In Accounts Receivable",
        "label": "Property And Equipment Sale In Accounts Receivable",
        "terseLabel": "Property and equipment sale in accounts receivable"
       }
      }
     },
     "localname": "PropertyAndEquipmentSaleInAccountsReceivable",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_RailcarCapacity": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Railcar Capacity",
        "label": "Railcar Capacity",
        "terseLabel": "Railcar volumetric capacity (in gallons)"
       }
      }
     },
     "localname": "RailcarCapacity",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "volumeItemType"
    },
    "gpp_RailcarOperatingLeasesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Railcar Operating Leases [Member]",
        "label": "Railcar Operating Leases [Member]",
        "terseLabel": "Railcar Operating Leases [Member]"
       }
      }
     },
     "localname": "RailcarOperatingLeasesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_RailcarTransportationServicesLeasingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Railcar Transportation Services, Leasing [Member]",
        "label": "Railcar Transportation Services Leasing [Member]",
        "terseLabel": "Rail Transportation Services, Leasing [Member]"
       }
      }
     },
     "localname": "RailcarTransportationServicesLeasingMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_RailcarTransportationServicesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Railcar Transportation Services [Member]",
        "label": "Railcar Transportation Services [Member]",
        "terseLabel": "Rail Transportation Services [Member]"
       }
      }
     },
     "localname": "RailcarTransportationServicesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_RatioOfIndebtednessToNetCapitalTotalFundedIndebtednessAmountDividedByFourPrecedingFiscalQuartersConsolidatedEbitda": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio Of Indebtedness To Net Capital Total Funded Indebtedness Amount Divided By Four Preceding Fiscal Quarters Consolidated EBITDA",
        "label": "Ratio Of Indebtedness To Net Capital Total Funded Indebtedness Amount Divided By Four Preceding Fiscal Quarters Consolidated EBITDA",
        "terseLabel": "Net leverage ratio, total funded indebtedness, amount divided by the four preceding quarters' consolidated EBITDA"
       }
      }
     },
     "localname": "RatioOfIndebtednessToNetCapitalTotalFundedIndebtednessAmountDividedByFourPrecedingFiscalQuartersConsolidatedEbitda",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_RatioOfIndebtednessToNetCapitalTotalFundedIndebtednessCashInExcessOfMinimumAmountMinimumAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio Of Indebtedness To Net Capital Total Funded Indebtedness, Cash In Excess Of Minimum Amount, Minimum Amount",
        "label": "Ratio Of Indebtedness To Net Capital Total Funded Indebtedness Cash In Excess Of Minimum Amount Minimum Amount",
        "terseLabel": "Net leverage ratio, total funded indebtedness, cash in excess of minimum amount"
       }
      }
     },
     "localname": "RatioOfIndebtednessToNetCapitalTotalFundedIndebtednessCashInExcessOfMinimumAmountMinimumAmount",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_RevenuePerformanceObligationPaymentTerms": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Revenue, Performance Obligation, Payment Terms",
        "label": "Revenue, Performance Obligation, Payment Terms",
        "terseLabel": "Revenue, Performance Obligation, Payment Terms"
       }
      }
     },
     "localname": "RevenuePerformanceObligationPaymentTerms",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "gpp_RightOfUseAssetsAndLeaseObligationsDerecognizedDueToLeaseModificationsOperatingLeases": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Right-Of-Use Assets And Lease Obligations Derecognized Due To Lease Modifications, Operating Leases",
        "label": "Right-Of-Use Assets And Lease Obligations Derecognized Due To Lease Modifications, Operating Leases",
        "terseLabel": "Right-of-use assets and lease obligations derecognized due to lease modifications, Operating leases"
       }
      }
     },
     "localname": "RightOfUseAssetsAndLeaseObligationsDerecognizedDueToLeaseModificationsOperatingLeases",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalCashFlowInformationRelatedToOperatingLeasesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_ScheduleAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule Allocation Of Total Cash Distributions To The General And Limited Partners [Table Text Block]",
        "label": "Schedule Allocation Of Total Cash Distributions To The General And Limited Partners [Table Text Block]",
        "terseLabel": "Schedule of Allocation of Total Cash Distributions to the General and Limited Partners"
       }
      }
     },
     "localname": "ScheduleAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_ScheduleOfComponentsOfPropertyAndEquipmentTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule Of Components Of Property And Equipment [Table Text Block]",
        "label": "Schedule Of Components Of Property And Equipment [Table Text Block]",
        "terseLabel": "Schedule of Components of Property and Equipment"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfPropertyAndEquipmentTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_SecondTargetCashDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Second Target Cash Distribution [Member]",
        "label": "Second Target Cash Distribution [Member]",
        "terseLabel": "Second Target Distribution [Member]"
       }
      }
     },
     "localname": "SecondTargetCashDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ServiceAgreementLogisticalOperationsManagementAndOtherServicesMonthlyFeePricePerGallon": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Service Agreement, Logistical Operations Management And Other Services Monthly Fee, Price Per Gallon",
        "label": "Service Agreement, Logistical Operations Management And Other Services Monthly Fee, Price Per Gallon"
       }
      }
     },
     "localname": "ServiceAgreementLogisticalOperationsManagementAndOtherServicesMonthlyFeePricePerGallon",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "perUnitItemType"
    },
    "gpp_ServiceAgreementRailcarVolumetricCapacityMonthlyFeePricePerGallon": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Service Agreement, Railcar Volumetric Capacity, Monthly Fee, Price Per Gallon",
        "label": "Service Agreement, Railcar Volumetric Capacity, Monthly Fee, Price Per Gallon"
       }
      }
     },
     "localname": "ServiceAgreementRailcarVolumetricCapacityMonthlyFeePricePerGallon",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "perUnitItemType"
    },
    "gpp_ServiceAgreementTerm": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Service Agreement, Term",
        "label": "Service Agreement, Term",
        "terseLabel": "Service agreement, term"
       }
      }
     },
     "localname": "ServiceAgreementTerm",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "gpp_ServiceAgreementThroughputOfEthanolPricePerGallon": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Service Agreement, Throughput Of Ethanol, Price Per Gallon",
        "label": "Service Agreement, Throughput Of Ethanol, Price Per Gallon"
       }
      }
     },
     "localname": "ServiceAgreementThroughputOfEthanolPricePerGallon",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "perUnitItemType"
    },
    "gpp_ServiceAndLeaseAgreementsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Service And Lease Agreements [Member]",
        "label": "Service And Lease Agreements [Member]",
        "terseLabel": "Service And Lease Agreements [Member]"
       }
      }
     },
     "localname": "ServiceAndLeaseAgreementsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_SettlementOfNewMarketTaxCreditsTransaction": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Settlement Of New Market Tax Credits Transaction",
        "label": "Settlement Of New Market Tax Credits Transaction",
        "terseLabel": "Settlement of NMTC transaction"
       }
      }
     },
     "localname": "SettlementOfNewMarketTaxCreditsTransaction",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_StorageAndThroughputServicesLeasingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Storage And Throughput Services, Leasing [Member]",
        "label": "Storage And Throughput Services Leasing [Member]",
        "terseLabel": "Storage And Throughput Services, Leasing [Member]"
       }
      }
     },
     "localname": "StorageAndThroughputServicesLeasingMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_SubordinatedUnitsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Subordinated Units [Member]",
        "label": "Subordinated Units [Member]",
        "terseLabel": "Subordinated Units [Member]"
       }
      }
     },
     "localname": "SubordinatedUnitsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_SummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Summary Of The Percentage Allocations Of Available Cash From Operating Surplus During Subordination Period Between Unitholders And General Partner Based On Specified Target Distribution Levels [Table text Block]",
        "label": "Summary Of The Percentage Allocations Of Available Cash From Operating Surplus Based On Specified Target Distribution Levels [Table Text Block]",
        "terseLabel": "Summary of the Percentage Allocations of Available Cash From Operating Surplus Based on Specified Target Distribution Levels"
       }
      }
     },
     "localname": "SummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_SummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Summary Of Quarterly Cash Distributions Declarations, Payments And Scheduled Payments [Table Text Block]",
        "label": "Summary Of Quarterly Cash Distributions Declarations, Payments And Scheduled Payments [Table Text Block]",
        "terseLabel": "Summary of Quarterly Cash Distributions Declarations, Payments and Scheduled Payments"
       }
      }
     },
     "localname": "SummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_SupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Supplemental Balance Sheet Information Related To Operating Leases [Table Text Block]",
        "label": "Supplemental Balance Sheet Information Related To Operating Leases [Table Text Block]",
        "terseLabel": "Supplemental Balance Sheet Information Related To Operating Leases"
       }
      }
     },
     "localname": "SupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Supplemental Cash Flow Information Related To Operating Leases [Table Text Block]",
        "label": "Supplemental Cash Flow Information Related To Operating Leases [Table Text Block]",
        "terseLabel": "Supplemental Cash Flow Information Related To Operating Leases"
       }
      }
     },
     "localname": "SupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "gpp_TerminalServicesAndLogisticsSolutionsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Terminal Services And Logistics Solutions [Member]",
        "label": "Terminal Services And Logistics Solutions [Member]",
        "terseLabel": "Terminal Services And Logistics Solutions [Member]"
       }
      }
     },
     "localname": "TerminalServicesAndLogisticsSolutionsMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_TerminalServicesLeasingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Terminal Services, Leasing [Member]",
        "label": "Terminal Services Leasing [Member]",
        "terseLabel": "Terminal Services, Leasing [Member]"
       }
      }
     },
     "localname": "TerminalServicesLeasingMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_TerminalServicesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Terminal Services [Member]",
        "label": "Terminal Services [Member]",
        "terseLabel": "Terminal Services [Member]"
       }
      }
     },
     "localname": "TerminalServicesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_ThirdTargetCashDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Third Target Cash Distribution [Member]",
        "label": "Third Target Cash Distribution [Member]",
        "terseLabel": "Third Target Distribution [Member]"
       }
      }
     },
     "localname": "ThirdTargetCashDistributionMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_TransferOfAssetsAndLiabilitiesInEquityExchangeWithParent": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Transfer Of Assets And Liabilities In Equity Exchange With Parent",
        "label": "Transfer Of Assets And Liabilities In Equity Exchange With Parent",
        "terseLabel": "Transfer of assets and liabilities in equity exchange with parent"
       }
      }
     },
     "localname": "TransferOfAssetsAndLiabilitiesInEquityExchangeWithParent",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "gpp_TruckingAndOtherMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Trucking and Other [Member]",
        "label": "Trucking And Other [Member]",
        "terseLabel": "Trucking and Other [Member]"
       }
      }
     },
     "localname": "TruckingAndOtherMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_TrucksAndOtherVehiclesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Trucks And Other Vehicles [Member]",
        "label": "Trucks And Other Vehicles [Member]",
        "terseLabel": "Trucks and Other Vehicles [Member]"
       }
      }
     },
     "localname": "TrucksAndOtherVehiclesMember",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "gpp_VariableLeaseBenefit": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Variable Lease Benefit",
        "label": "Variable Lease Benefit",
        "negatedLabel": "Variable lease benefit"
       }
      }
     },
     "localname": "VariableLeaseBenefit",
     "nsuri": "http://www.gpreinc.com/20191231",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_ConsolidatedEntitiesAxis": {
     "auth_ref": [
      "r360",
      "r369"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by consolidated entity or group of entities.",
        "label": "Consolidated Entities [Axis]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Entity or group of entities consolidated into reporting entity.",
        "label": "Consolidated Entities [Domain]",
        "terseLabel": "Consolidated Entities [Domain]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock": {
     "auth_ref": [
      "r366"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation.",
        "label": "Schedule of Aggregate Minimum Agreement Payments"
       }
      }
     },
     "localname": "ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_MajorCustomersAxis": {
     "auth_ref": [
      "r151",
      "r217",
      "r221",
      "r354"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by name or description of a single external customer or a group of external customers.",
        "label": "Customer [Axis]"
       }
      }
     },
     "localname": "MajorCustomersAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_MaximumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Upper limit of the provided range.",
        "label": "Maximum [Member]",
        "terseLabel": "Maximum [Member]"
       }
      }
     },
     "localname": "MaximumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MinimumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Lower limit of the provided range.",
        "label": "Minimum [Member]",
        "terseLabel": "Minimum [Member]"
       }
      }
     },
     "localname": "MinimumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_NameOfMajorCustomerDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Single external customer or group of external customers.",
        "label": "Name Of Major Customer [Domain]",
        "terseLabel": "Customer [Domain]"
       }
      }
     },
     "localname": "NameOfMajorCustomerDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ParentCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.",
        "label": "Parent Company [Member]",
        "terseLabel": "Green Plains Inc. [Member]"
       }
      }
     },
     "localname": "ParentCompanyMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ProductOrServiceAxis": {
     "auth_ref": [
      "r150",
      "r217",
      "r220",
      "r352",
      "r353"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by product and service, or group of similar products and similar services.",
        "label": "Product and Service [Axis]"
       }
      }
     },
     "localname": "ProductOrServiceAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ProductsAndServicesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Product or service, or a group of similar products or similar services.",
        "label": "Products And Services [Domain]",
        "terseLabel": "Product and Service [Domain]"
       }
      }
     },
     "localname": "ProductsAndServicesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RangeAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Range [Axis]"
       }
      }
     },
     "localname": "RangeAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RangeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Range [Member]",
        "terseLabel": "Range [Domain]"
       }
      }
     },
     "localname": "RangeMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAdjustmentMember": {
     "auth_ref": [
      "r108",
      "r110",
      "r111",
      "r112"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Effect of a correction of an error, other prior year adjustment, or application of a new accounting pronouncement on a financial statement line item or any per share amounts. The cumulative effect of the change on retained earnings or net assets in the statement of financial position would also be represented under this domain member.",
        "label": "Restatement Adjustment [Member]",
        "terseLabel": "Restatement Adjustment [Member]"
       }
      }
     },
     "localname": "RestatementAdjustmentMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by revision of previously issued financial statements.",
        "label": "Restatement [Axis]"
       }
      }
     },
     "localname": "RestatementAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RestatementDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Revision of previously issued financial statements.",
        "label": "Restatement [Domain]",
        "terseLabel": "Restatement [Domain]"
       }
      }
     },
     "localname": "RestatementDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioForecastMember": {
     "auth_ref": [
      "r368"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information reported for future period.",
        "label": "Scenario Forecast [Member]",
        "terseLabel": "Scenario, Forecast [Member]"
       }
      }
     },
     "localname": "ScenarioForecastMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioPreviouslyReportedMember": {
     "auth_ref": [
      "r110",
      "r111",
      "r112"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the amount as previously reported before the correction of an error or other adjustment.",
        "label": "Scenario Previously Reported [Member]",
        "terseLabel": "Previously Reported [Member]"
       }
      }
     },
     "localname": "ScenarioPreviouslyReportedMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioUnspecifiedDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.",
        "label": "Scenario Unspecified [Domain]",
        "terseLabel": "Scenario, Unspecified [Domain]"
       }
      }
     },
     "localname": "ScenarioUnspecifiedDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_StatementScenarioAxis": {
     "auth_ref": [
      "r196",
      "r314"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.",
        "label": "Scenario [Axis]"
       }
      }
     },
     "localname": "StatementScenarioAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountingPoliciesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Summary Of Significant Accounting Policies [Abstract]"
       }
      }
     },
     "localname": "AccountingPoliciesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountingStandardsUpdate201602Member": {
     "auth_ref": [
      "r284"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Accounting Standards Update 2016-02 Leases (Topic 842).",
        "label": "Accounting Standards Update201602 [Member]",
        "terseLabel": "Accounting Standards Update 2016-02 [Member]"
       }
      }
     },
     "localname": "AccountingStandardsUpdate201602Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis": {
     "auth_ref": [
      "r54"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of receivable.",
        "label": "Receivable Type [Axis]"
       }
      }
     },
     "localname": "AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountsPayableCurrent": {
     "auth_ref": [
      "r43"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accounts Payable, Current",
        "terseLabel": "Accounts payable"
       }
      }
     },
     "localname": "AccountsPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccountsReceivableNetCurrent": {
     "auth_ref": [
      "r18",
      "r33",
      "r152",
      "r153",
      "r218"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.",
        "label": "Accounts Receivable, Net, Current",
        "verboseLabel": "Accounts receivable"
       }
      }
     },
     "localname": "AccountsReceivableNetCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedLiabilitiesCurrent": {
     "auth_ref": [
      "r47"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Liabilities, Current",
        "terseLabel": "Accrued and other liabilities"
       }
      }
     },
     "localname": "AccruedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": {
     "auth_ref": [
      "r41",
      "r180"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
        "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
        "negatedLabel": "Less: accumulated depreciation and amortization"
       }
      }
     },
     "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": {
     "auth_ref": [
      "r107"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by new accounting pronouncement.",
        "label": "Adjustments for New Accounting Pronouncements [Axis]"
       }
      }
     },
     "localname": "AdjustmentsForNewAccountingPronouncementsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "verboseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:"
       }
      }
     },
     "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AllocatedShareBasedCompensationExpense": {
     "auth_ref": [
      "r225",
      "r236",
      "r239"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.",
        "label": "Allocated Share-based Compensation Expense",
        "verboseLabel": "Compensation cost (benefit)"
       }
      }
     },
     "localname": "AllocatedShareBasedCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfFinancingCosts": {
     "auth_ref": [
      "r64",
      "r88",
      "r274"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense attributable to debt issuance costs.",
        "label": "Amortization of Financing Costs",
        "terseLabel": "Amortization of debt issuance costs"
       }
      }
     },
     "localname": "AmortizationOfFinancingCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": {
     "auth_ref": [
      "r118"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.",
        "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount",
        "terseLabel": "Potentially dilutive common or subordinated units outstanding"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_AssetRetirementObligation": {
     "auth_ref": [
      "r187"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligation",
        "periodEndLabel": "Balance at end of year",
        "periodStartLabel": "Balance at beginning of year"
       }
      }
     },
     "localname": "AssetRetirementObligation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationAccretionExpense": {
     "auth_ref": [
      "r186",
      "r190"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 16.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.",
        "label": "Asset Retirement Obligation, Accretion Expense",
        "terseLabel": "Accretion expense",
        "verboseLabel": "Accretion"
       }
      }
     },
     "localname": "AssetRetirementObligationAccretionExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationCurrent": {
     "auth_ref": [
      "r187"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligation, Current",
        "terseLabel": "Asset retirement obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Asset Retirement Obligations [Abstract]"
       }
      }
     },
     "localname": "AssetRetirementObligationDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetRetirementObligationDisclosureTextBlock": {
     "auth_ref": [
      "r192"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligation Disclosure [Text Block]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligations"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AssetRetirementObligationLiabilitiesIncurred": {
     "auth_ref": [
      "r188"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of asset retirement obligations incurred during the period.",
        "label": "Asset Retirement Obligation, Liabilities Incurred",
        "terseLabel": "Additional asset retirement obligations incurred"
       }
      }
     },
     "localname": "AssetRetirementObligationLiabilitiesIncurred",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationLiabilitiesSettled": {
     "auth_ref": [
      "r189"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.",
        "label": "Asset Retirement Obligation, Liabilities Settled",
        "negatedLabel": "Liabilities settled"
       }
      }
     },
     "localname": "AssetRetirementObligationLiabilitiesSettled",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]"
       }
      }
     },
     "localname": "AssetRetirementObligationRollForwardAnalysisRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsScheduleOfChangeInLiabilityForAssetRetirementObligationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetRetirementObligationsNoncurrent": {
     "auth_ref": [
      "r187"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligations, Noncurrent",
        "terseLabel": "Asset retirement obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationsPolicy": {
     "auth_ref": [
      "r93",
      "r191"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for legal obligation associated with retirement of long-lived asset that results from acquisition, construction, or development or from normal operation of long-lived asset. Excludes environmental remediation liability from improper or other-than-normal operation of long-lived asset, obligation arising in connection with leased property that meets definition of lease payments or variable lease payments and from plan to sell or otherwise dispose of a long-lived asset.",
        "label": "Asset Retirement Obligations, Policy [Policy Text Block]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_Assets": {
     "auth_ref": [
      "r147",
      "r328",
      "r342"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Asset",
        "totalLabel": "Total assets"
       }
      }
     },
     "localname": "Assets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "ASSETS",
        "terseLabel": "ASSETS"
       }
      }
     },
     "localname": "AssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsCurrent": {
     "auth_ref": [
      "r20",
      "r21",
      "r55"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets, Current",
        "totalLabel": "Total current assets"
       }
      }
     },
     "localname": "AssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Assets, Current [Abstract]",
        "terseLabel": "Current assets"
       }
      }
     },
     "localname": "AssetsCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation": {
     "auth_ref": [
      "r1",
      "r2",
      "r10",
      "r12",
      "r182"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount classified as assets attributable to disposal group held for sale or disposed of.",
        "label": "Disposal Group, Including Discontinued Operation, Assets",
        "totalLabel": "Total identifiable net assets"
       }
      }
     },
     "localname": "AssetsOfDisposalGroupIncludingDiscontinuedOperation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AwardTypeAxis": {
     "auth_ref": [
      "r226",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of award under share-based payment arrangement.",
        "label": "Award Type [Axis]"
       }
      }
     },
     "localname": "AwardTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BaseRateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum rate investor will accept.",
        "label": "Base Rate [Member]",
        "terseLabel": "Base Rate [Member]"
       }
      }
     },
     "localname": "BaseRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BuildingAndBuildingImprovementsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Facility held for productive use including, but not limited to, office, production, storage and distribution facilities and any addition, improvement, or renovation to the structure, for example, but not limited to, interior masonry, interior flooring, electrical, and plumbing.",
        "label": "Building And Building Improvements [Member]",
        "terseLabel": "Buildings and Improvements [Member]"
       }
      }
     },
     "localname": "BuildingAndBuildingImprovementsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BusinessAcquisitionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Business Acquisition [Line Items]"
       }
      }
     },
     "localname": "BusinessAcquisitionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BusinessCombinationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Acquisitions [Abstract]"
       }
      }
     },
     "localname": "BusinessCombinationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CashAndCashEquivalentsAtCarryingValue": {
     "auth_ref": [
      "r17",
      "r37",
      "r90"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.",
        "label": "Cash and Cash Equivalents, at Carrying Value",
        "periodEndLabel": "Cash and cash equivalents, end of period",
        "periodStartLabel": "Cash and cash equivalents, beginning of period",
        "terseLabel": "Cash and cash equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsPolicyTextBlock": {
     "auth_ref": [
      "r22",
      "r91",
      "r93"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.",
        "label": "Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Cash and Cash Equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": {
     "auth_ref": [
      "r84",
      "r269"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect",
        "totalLabel": "Net change in cash and cash equivalents"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ClassOfStockDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.",
        "label": "Class Of Stock [Domain]",
        "terseLabel": "Class of Stock [Domain]"
       }
      }
     },
     "localname": "ClassOfStockDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommitmentsAndContingencies": {
     "auth_ref": [
      "r52",
      "r195",
      "r334",
      "r347"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.",
        "label": "Commitments and Contingencies",
        "terseLabel": "Commitments and contingencies (Note 14)"
       }
      }
     },
     "localname": "CommitmentsAndContingencies",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Commitments and Contingencies [Abstract]"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": {
     "auth_ref": [
      "r194",
      "r197"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for commitments and contingencies.",
        "label": "Commitments and Contingencies Disclosure [Text Block]",
        "terseLabel": "Commitments and Contingencies"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingencies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommonClassAMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Classification of common stock representing ownership interest in a corporation.",
        "label": "Common Class A [Member]",
        "terseLabel": "Common Units [Member]"
       }
      }
     },
     "localname": "CommonClassAMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ConcentrationRiskCreditRisk": {
     "auth_ref": [
      "r133",
      "r340"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for credit risk.",
        "label": "Concentration Risk, Credit Risk, Policy [Policy Text Block]",
        "terseLabel": "Concentrations of Credit Risk"
       }
      }
     },
     "localname": "ConcentrationRiskCreditRisk",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConsolidationPolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r261",
      "r262",
      "r263"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
        "label": "Consolidation, Policy [Policy Text Block]",
        "verboseLabel": "Consolidated Financial Statements"
       }
      }
     },
     "localname": "ConsolidationPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessPolicy"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConstructionInProgressMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.",
        "label": "Construction In Progress [Member]",
        "terseLabel": "Construction-In-Progress [Member]"
       }
      }
     },
     "localname": "ConstructionInProgressMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ContainersMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Assets commonly used in the storage and transportation of goods.",
        "label": "Containers [Member]",
        "terseLabel": "Tanks and Terminal Equipment [Member]"
       }
      }
     },
     "localname": "ContainersMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock": {
     "auth_ref": [
      "r215"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of contract balances and changes in contract balances.",
        "label": "Deferred Revenue, by Arrangement, Disclosure [Table Text Block]",
        "terseLabel": "Changes in Unearned Revenue From Service Agreements"
       }
      }
     },
     "localname": "ContractWithCustomerAssetAndLiabilityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ContractWithCustomerLiability": {
     "auth_ref": [
      "r212",
      "r213",
      "r218"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.",
        "label": "Deferred Revenue",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "verboseLabel": "Unearned revenue"
       }
      }
     },
     "localname": "ContractWithCustomerLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress": {
     "auth_ref": [
      "r214"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.",
        "label": "Deferred Revenue, Additions",
        "terseLabel": "Net additions"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityRevenueRecognized": {
     "auth_ref": [
      "r219"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.",
        "label": "Deferred Revenue, Revenue Recognized",
        "negatedLabel": "Revenue recognized included in beginning balance"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityRevenueRecognized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CorporateJointVentureMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Corporation owned and operated by a small group of ventures to accomplish a mutually beneficial venture or project.",
        "label": "Corporate Joint Venture [Member]",
        "terseLabel": "NLR Energy Logistics LLC [Member]"
       }
      }
     },
     "localname": "CorporateJointVentureMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CostMaintenance": {
     "auth_ref": [
      "r65"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cost of maintenance incurred and directly related to good produced and service rendered.",
        "label": "Maintenance Costs",
        "terseLabel": "Operations and maintenance (excluding depreciation and amortization reflected below)"
       }
      }
     },
     "localname": "CostMaintenance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostsAndExpenses": {
     "auth_ref": [
      "r66"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total costs of sales and operating expenses for the period.",
        "label": "Costs and Expenses",
        "terseLabel": "Operating expenses",
        "totalLabel": "Total operating expenses"
       }
      }
     },
     "localname": "CostsAndExpenses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CreditFacilityAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Axis]"
       }
      }
     },
     "localname": "CreditFacilityAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CreditFacilityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Domain]",
        "terseLabel": "Credit Facility [Domain]"
       }
      }
     },
     "localname": "CreditFacilityDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r98",
      "r250",
      "r254"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
        "label": "Current Income Tax Expense (Benefit)",
        "terseLabel": "Current"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Debt [Abstract]"
       }
      }
     },
     "localname": "DebtDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtDisclosureTextBlock": {
     "auth_ref": [
      "r202"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.",
        "label": "Debt Disclosure [Text Block]",
        "terseLabel": "Debt"
       }
      }
     },
     "localname": "DebtDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebt"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DebtInstrumentAxis": {
     "auth_ref": [
      "r26",
      "r27",
      "r28",
      "r329",
      "r331",
      "r341"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.",
        "label": "Debt Instrument [Axis]"
       }
      }
     },
     "localname": "DebtInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.",
        "label": "Debt Instrument, Basis Spread on Variable Rate",
        "terseLabel": "Interest rate, basis spread on variable rate, percentage"
       }
      }
     },
     "localname": "DebtInstrumentBasisSpreadOnVariableRate1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentDescriptionOfVariableRateBasis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.",
        "label": "Debt Instrument, Description of Variable Rate Basis",
        "terseLabel": "Interest rate, basis for effective rate"
       }
      }
     },
     "localname": "DebtInstrumentDescriptionOfVariableRateBasis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentFaceAmount": {
     "auth_ref": [
      "r273",
      "r275"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Face (par) amount of debt instrument at time of issuance.",
        "label": "Debt Instrument, Face Amount",
        "terseLabel": "Debt instrument, face amount"
       }
      }
     },
     "localname": "DebtInstrumentFaceAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentInterestRateDuringPeriod": {
     "auth_ref": [
      "r49",
      "r273"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The average effective interest rate during the reporting period.",
        "label": "Debt Instrument, Interest Rate During Period"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateDuringPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Debt Instrument [Line Items]"
       }
      }
     },
     "localname": "DebtInstrumentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentMaturityDate": {
     "auth_ref": [
      "r50",
      "r266"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.",
        "label": "Debt Instrument, Maturity Date"
       }
      }
     },
     "localname": "DebtInstrumentMaturityDate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DebtInstrumentNameDomain": {
     "auth_ref": [
      "r51"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.",
        "label": "Debt Instrument Name [Domain]",
        "terseLabel": "Debt Instrument, Name [Domain]"
       }
      }
     },
     "localname": "DebtInstrumentNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentTable": {
     "auth_ref": [
      "r51",
      "r101",
      "r204",
      "r205",
      "r206",
      "r207",
      "r272",
      "r273",
      "r275",
      "r339"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Schedule of Long-term Debt Instruments [Table]"
       }
      }
     },
     "localname": "DebtInstrumentTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtPolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r199"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy related to debt. Includes, but is not limited to, debt issuance costs, the effects of refinancings, method of amortizing debt issuance costs and original issue discount, and classifications of debt.",
        "label": "Debt, Policy [Policy Text Block]",
        "terseLabel": "Financing Costs"
       }
      }
     },
     "localname": "DebtPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DeferredFinanceCostsNet": {
     "auth_ref": [
      "r42",
      "r274"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "label": "Debt Issuance Costs, Net",
        "terseLabel": "Debt issuance costs"
       }
      }
     },
     "localname": "DeferredFinanceCostsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r88",
      "r98",
      "r251",
      "r254"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Income Tax Expense (Benefit)",
        "verboseLabel": "Deferred"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredRentCreditNoncurrent": {
     "auth_ref": [
      "r53",
      "r280"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date.",
        "label": "Deferred Costs, Leasing, Net, Noncurrent",
        "terseLabel": "Deferred lease liability",
        "verboseLabel": "Deferred lease liabilities"
       }
      }
     },
     "localname": "DeferredRentCreditNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGross": {
     "auth_ref": [
      "r248"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Gross"
       }
      }
     },
     "localname": "DeferredTaxAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationAndAmortization": {
     "auth_ref": [
      "r88",
      "r178"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.",
        "label": "Depreciation, Depletion and Amortization, Nonproduction",
        "verboseLabel": "Depreciation and amortization"
       }
      }
     },
     "localname": "DepreciationAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationDepletionAndAmortization": {
     "auth_ref": [
      "r88",
      "r144"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.",
        "label": "Depreciation, Depletion and Amortization",
        "terseLabel": "Depreciation and amortization"
       }
      }
     },
     "localname": "DepreciationDepletionAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisaggregationOfRevenueLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Disaggregation of Revenue [Line Items]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueChangesInUnearnedRevenueFromServiceAgreementsDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTableTextBlock": {
     "auth_ref": [
      "r217"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table Text Block]",
        "terseLabel": "Disaggregatation Of Revenue By Major Source"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": {
     "auth_ref": [
      "r240"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for share-based payment arrangement.",
        "label": "Disclosure of Compensation Related Costs, Share-based Payments [Text Block]",
        "terseLabel": "Unit-Based Compensation"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensation"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Dispositions [Abstract]"
       }
      }
     },
     "localname": "DiscontinuedOperationsAndDisposalGroupsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisposalGroupClassificationAxis": {
     "auth_ref": [
      "r12"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by disposal group classification.",
        "label": "Disposal Group Classification [Axis]"
       }
      }
     },
     "localname": "DisposalGroupClassificationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisposalGroupClassificationDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Component or group of components disposed of, including but not limited to, disposal group held-for-sale or disposed of by sale, disposed of by means other than sale, and discontinued operations.",
        "label": "Disposal Group Classification [Domain]",
        "terseLabel": "Disposal Group Classification [Domain]"
       }
      }
     },
     "localname": "DisposalGroupClassificationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember": {
     "auth_ref": [
      "r176",
      "r177",
      "r183"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disposal group that either has been sold or is classified as held-for-sale. Excludes disposals classified as discontinued operations.",
        "label": "Disposal Group Held For Sale Or Disposed Of By Sale Not Discontinued Operations [Member]",
        "terseLabel": "Asset Purchase Agreement [Member]"
       }
      }
     },
     "localname": "DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.",
        "label": "Disposal Group, Including Discontinued Operation, Consideration",
        "terseLabel": "Total consideration received",
        "verboseLabel": "Total consideration received"
       }
      }
     },
     "localname": "DisposalGroupIncludingDiscontinuedOperationConsideration",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r9"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.",
        "label": "Disposal Group, Including Discontinued Operation, General and Administrative Expense",
        "terseLabel": "Transaction costs, general and administrative expense"
       }
      }
     },
     "localname": "DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment": {
     "auth_ref": [
      "r1",
      "r2",
      "r10",
      "r182"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.",
        "label": "Disposal Group, Including Discontinued Operation, Property, Plant and Equipment",
        "terseLabel": "Property and equipment, net"
       }
      }
     },
     "localname": "DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisposalGroupNotDiscontinuedOperationsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disposal group that is not classified as discontinued operations.",
        "label": "Disposal Group Not Discontinued Operations [Member]",
        "terseLabel": "Disposal Group, Not Discontinued Operations [Member]"
       }
      }
     },
     "localname": "DisposalGroupNotDiscontinuedOperationsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock": {
     "auth_ref": [
      "r16",
      "r185"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.",
        "label": "Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]",
        "terseLabel": "Dispositions"
       }
      }
     },
     "localname": "DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of disposal group.",
        "label": "Disposal Groups Including Discontinued Operations Name [Domain]",
        "terseLabel": "Disposal Group Name [Domain]"
       }
      }
     },
     "localname": "DisposalGroupsIncludingDiscontinuedOperationsNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).",
        "label": "Distribution Made to Limited Partner, Cash Distributions Declared",
        "netLabel": "Total distributions declared",
        "terseLabel": "Distributions declared"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerCashDistributionsDeclared",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash distribution paid to unit-holder of limited partnership (LP).",
        "label": "Distribution Made to Limited Partner, Cash Distributions Paid",
        "terseLabel": "Total distributions paid"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerCashDistributionsPaid",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerDateOfRecord": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Date of record for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.",
        "label": "Distribution Made to Limited Partner, Date of Record",
        "terseLabel": "Record Date"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDateOfRecord",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsDetails"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerDeclarationDate": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Date of declaration for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.",
        "label": "Distribution Made to Limited Partner, Declaration Date",
        "terseLabel": "Declaration Date"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDeclarationDate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsDetails"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerDistributionDate": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Date of distribution for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.",
        "label": "Distribution Made to Limited Partner, Distribution Date",
        "terseLabel": "Payment Date"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDistributionDate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsDetails"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).",
        "label": "Distribution Made to Limited Partner, Distributions Declared, Per Unit",
        "terseLabel": "Total Quarterly Distribution Per Unit - Target Amount"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).",
        "label": "Distribution Made to Limited Partner, Distributions Paid, Per Unit",
        "terseLabel": "Quarterly Distribution",
        "verboseLabel": "Quarterly distribution paid, per unit"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerDistributionsPaidPerUnit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfQuarterlyCashDistributionsDeclarationsPaymentsAndScheduledPaymentsDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_DistributionMadeToLimitedPartnerLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Distribution Made to Limited Partner [Line Items]"
       }
      }
     },
     "localname": "DistributionMadeToLimitedPartnerLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DistributionTypeDomain": {
     "auth_ref": [
      "r209"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Types of distribution made by the entity.",
        "label": "Distribution Type [Domain]",
        "terseLabel": "Distribution Type [Domain]"
       }
      }
     },
     "localname": "DistributionTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DistributionsMadeToLimitedPartnerTable": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about payment of cash or stock made to limited partner of limited partnership (LP).",
        "label": "Distributions Made to Limited Partner [Table]"
       }
      }
     },
     "localname": "DistributionsMadeToLimitedPartnerTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis": {
     "auth_ref": [
      "r117",
      "r209"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of distribution.",
        "label": "Distribution Type [Axis]"
       }
      }
     },
     "localname": "DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DueFromRelatedParties": {
     "auth_ref": [
      "r103",
      "r307",
      "r333",
      "r348"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.",
        "label": "Due from Related Parties"
       }
      }
     },
     "localname": "DueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DueFromRelatedPartiesCurrent": {
     "auth_ref": [
      "r19",
      "r23",
      "r32",
      "r99",
      "r307"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate amount of receivables to be collected from related parties 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, at the financial statement date. which are usually due within one year (or one business cycle).",
        "label": "Due from Related Parties, Current",
        "terseLabel": "Accounts receivable from affiliates"
       }
      }
     },
     "localname": "DueFromRelatedPartiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DueToRelatedPartiesCurrent": {
     "auth_ref": [
      "r43",
      "r103",
      "r307"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Due to Related Parties, Current",
        "terseLabel": "Accounts payable to affiliates"
       }
      }
     },
     "localname": "DueToRelatedPartiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EarningsPerShareAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Earnings Per Unit [Abstract]",
        "verboseLabel": "Earnings per limited partner unit (basic and diluted):"
       }
      }
     },
     "localname": "EarningsPerShareAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EarningsPerShareBasicAndDiluted": {
     "auth_ref": [
      "r114"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements.  Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period.  Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.",
        "label": "Earnings Per Share, Basic and Diluted",
        "terseLabel": "Earnings per limited partner unit (basic and diluted)",
        "verboseLabel": "Earnings per limited partner unit - basic and diluted"
       }
      }
     },
     "localname": "EarningsPerShareBasicAndDiluted",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_EarningsPerSharePolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r118",
      "r119",
      "r120"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.",
        "label": "Earnings Per Share, Policy [Policy Text Block]",
        "terseLabel": "Earnings Per Unit"
       }
      }
     },
     "localname": "EarningsPerSharePolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EarningsPerShareTextBlock": {
     "auth_ref": [
      "r122"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for earnings per share.",
        "label": "Earnings Per Share [Text Block]",
        "terseLabel": "Earnings Per Unit"
       }
      }
     },
     "localname": "EarningsPerShareTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnit"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r244",
      "r245",
      "r253"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "terseLabel": "Federal statutory corporate income tax rate"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions": {
     "auth_ref": [
      "r237"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.",
        "label": "Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options",
        "terseLabel": "Unrecognized compensation costs"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentOwnershipPercentage": {
     "auth_ref": [
      "r162"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.",
        "label": "Equity Method Investment, Ownership Percentage"
       }
      }
     },
     "localname": "EquityMethodInvestmentOwnershipPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales": {
     "auth_ref": [
      "r15",
      "r164"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of the cost of sales reported by an equity method investment of the entity.",
        "label": "Equity Method Investment, Summarized Financial Information, Cost of Sales",
        "terseLabel": "Less: total operating expenses"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationCostOfSales",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss": {
     "auth_ref": [
      "r15",
      "r96",
      "r161",
      "r164",
      "r268"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of net income (loss) reported by an equity method investment of the entity.",
        "label": "Equity Method Investment, Summarized Financial Information, Net Income (Loss)",
        "totalLabel": "Net income (loss)"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue": {
     "auth_ref": [
      "r15",
      "r164"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue from sale of product and rendering of service reported by equity method investee.",
        "label": "Equity Method Investment, Summarized Financial Information, Revenue",
        "terseLabel": "Total revenues"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationRevenue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentCombinedSummaryOfOperationsDataForEquityInvestmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestments": {
     "auth_ref": [
      "r38",
      "r148",
      "r160"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.",
        "label": "Equity Method Investments",
        "terseLabel": "Investment in equity method investee"
       }
      }
     },
     "localname": "EquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Equity Method Investment [Abstract]"
       }
      }
     },
     "localname": "EquityMethodInvestmentsAndJointVenturesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_EquityMethodInvestmentsDisclosureTextBlock": {
     "auth_ref": [
      "r166",
      "r264"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.",
        "label": "Equity Method Investments and Joint Ventures Disclosure [Text Block]",
        "terseLabel": "Equity Method Investment"
       }
      }
     },
     "localname": "EquityMethodInvestmentsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestment"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EquityMethodInvestmentsPolicy": {
     "auth_ref": [
      "r38",
      "r83",
      "r93",
      "r163",
      "r268"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for equity method of accounting for investments and other interests. Investment includes, but is not limited to, unconsolidated subsidiary, corporate joint venture, noncontrolling interest in real estate venture, limited partnership, and limited liability company. Information includes, but is not limited to, ownership percentage, reason equity method is or is not considered appropriate, and accounting policy election for distribution received.",
        "label": "Equity Method Investments [Policy Text Block]",
        "terseLabel": "Investment in Equity Method Investee"
       }
      }
     },
     "localname": "EquityMethodInvestmentsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EquityMethodInvestmentsTextBlock": {
     "auth_ref": [
      "r165"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information.",
        "label": "Equity Method Investments [Table Text Block]",
        "terseLabel": "Combined Summary Of Operations Data For Equity Investment"
       }
      }
     },
     "localname": "EquityMethodInvestmentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Fair Value Disclosures [Abstract]"
       }
      }
     },
     "localname": "FairValueDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueDisclosuresTextBlock": {
     "auth_ref": [
      "r267"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.",
        "label": "Fair Value Disclosures [Text Block]",
        "terseLabel": "Fair Value Disclosures"
       }
      }
     },
     "localname": "FairValueDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureFairValueDisclosures"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FurnitureAndFixturesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.",
        "label": "Furniture And Fixtures [Member]",
        "terseLabel": "Office Furniture And Equipment [Member]"
       }
      }
     },
     "localname": "FurnitureAndFixturesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GainLossOnDispositionOfAssets1": {
     "auth_ref": [
      "r88"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 14.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.",
        "label": "Gain (Loss) on Disposition of Assets",
        "negatedLabel": "Gain on the disposal of assets"
       }
      }
     },
     "localname": "GainLossOnDispositionOfAssets1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r69"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.",
        "label": "General and Administrative Expense",
        "terseLabel": "General and administrative"
       }
      }
     },
     "localname": "GeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralPartnerMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Party to a partnership business who has unlimited liability.",
        "label": "General Partner [Member]",
        "terseLabel": "General Partner [Member]"
       }
      }
     },
     "localname": "GeneralPartnerMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Goodwill": {
     "auth_ref": [
      "r167",
      "r169"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill",
        "terseLabel": "Goodwill"
       }
      }
     },
     "localname": "Goodwill",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureGoodwillNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Goodwill [Abstract]"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r171",
      "r174"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.",
        "label": "Goodwill and Intangible Assets, Policy [Policy Text Block]",
        "terseLabel": "Impairment of Long-Lived Assets and Goodwill"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillDisclosureTextBlock": {
     "auth_ref": [
      "r173"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for goodwill.",
        "label": "Goodwill Disclosure [Text Block]",
        "verboseLabel": "Goodwill"
       }
      }
     },
     "localname": "GoodwillDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureGoodwill"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillImpairmentLoss": {
     "auth_ref": [
      "r88",
      "r168",
      "r170",
      "r172"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Impairment Loss",
        "terseLabel": "Goodwill impairment loss"
       }
      }
     },
     "localname": "GoodwillImpairmentLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureGoodwillNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillPeriodIncreaseDecrease": {
     "auth_ref": [
      "r171"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Period Increase (Decrease)"
       }
      }
     },
     "localname": "GoodwillPeriodIncreaseDecrease",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureGoodwillNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IPOMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "First sale of stock by a private company to the public.",
        "label": "I P O [Member]",
        "terseLabel": "IPO [Member]"
       }
      }
     },
     "localname": "IPOMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill": {
     "auth_ref": [
      "r88",
      "r175"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.",
        "label": "Impairment of Intangible Assets (Excluding Goodwill)",
        "terseLabel": "Intangible assets impairment charges"
       }
      }
     },
     "localname": "ImpairmentOfIntangibleAssetsExcludingGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis": {
     "auth_ref": [
      "r115",
      "r116",
      "r121",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by managing member or partner type.",
        "label": "Managing Member or General Partner [Axis]"
       }
      }
     },
     "localname": "IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncentiveDistributionRecipientDomain": {
     "auth_ref": [
      "r115",
      "r121"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The managing member or general partner receiving the distribution.",
        "label": "Incentive Distribution Recipient [Domain]",
        "terseLabel": "Incentive Distribution, Recipient [Domain]"
       }
      }
     },
     "localname": "IncentiveDistributionRecipientDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitSummaryOfPercentageAllocationsOfAvailableCashFromOperatingSurplusBasedOnSpecifiedTargetDistributionLevelsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperations": {
     "auth_ref": [
      "r68",
      "r89",
      "r117",
      "r260"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after tax of income (loss) from continuing operations attributable to the parent.",
        "label": "Income (Loss) Attributable to Parent",
        "terseLabel": "Net income attributable to partners' ownership interests",
        "verboseLabel": "Total net income"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": {
     "auth_ref": [
      "r61",
      "r108",
      "r327",
      "r336",
      "r351"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.",
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest",
        "totalLabel": "Income before income taxes and income (loss) from equity method investee"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromEquityMethodInvestments": {
     "auth_ref": [
      "r62",
      "r88",
      "r145",
      "r160",
      "r335",
      "r349"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (loss) for proportionate share of equity method investee's income (loss).",
        "label": "Income (Loss) from Equity Method Investments",
        "negatedLabel": "(Income) loss from equity method investee",
        "terseLabel": "Income (loss) from equity method investee"
       }
      }
     },
     "localname": "IncomeLossFromEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeStatementAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Statements of Operations [Abstract]"
       }
      }
     },
     "localname": "IncomeStatementAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by name of disposal group.",
        "label": "Disposal Group Name [Axis]"
       }
      }
     },
     "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]"
       }
      }
     },
     "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable": {
     "auth_ref": [
      "r2",
      "r3",
      "r4",
      "r5",
      "r6",
      "r7",
      "r8",
      "r11",
      "r13",
      "r14",
      "r15",
      "r183",
      "r184"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.",
        "label": "Disposal Groups, Including Discontinued Operations [Table]"
       }
      }
     },
     "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Taxes [Abstract]"
       }
      }
     },
     "localname": "IncomeTaxDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureTextBlock": {
     "auth_ref": [
      "r257"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.",
        "label": "Income Tax Disclosure [Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxes"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r98",
      "r146",
      "r255"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Income Tax Expense (Benefit)",
        "negatedLabel": "Income tax expense",
        "totalLabel": "Income tax expense (benefit), Total"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails",
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxPolicyTextBlock": {
     "auth_ref": [
      "r58",
      "r93",
      "r242",
      "r243",
      "r246",
      "r247",
      "r249",
      "r256",
      "r359"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
        "label": "Income Tax, Policy [Policy Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r97",
      "r244",
      "r245"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "terseLabel": "Tax expense at federal statutory rate"
       }
      }
     },
     "localname": "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherReconcilingItems": {
     "auth_ref": [
      "r244",
      "r245"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherReconcilingItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes": {
     "auth_ref": [
      "r97",
      "r244",
      "r245"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
        "terseLabel": "State income tax expense, net of federal benefit"
       }
      }
     },
     "localname": "IncomeTaxReconciliationStateAndLocalIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesScheduleOfDifferencesBetweenIncomeTaxExpenseBenefitComputedAtStatutoryFederalIncomeTaxRateAndAsPresentedOnConsolidatedStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaidNet": {
     "auth_ref": [
      "r92"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.",
        "label": "Income Taxes Paid, Net",
        "terseLabel": "Cash paid for income taxes"
       }
      }
     },
     "localname": "IncomeTaxesPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.",
        "label": "Increase (Decrease) in Accounts Payable and Accrued Liabilities",
        "terseLabel": "Accounts payable and accrued liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsPayableAndAccruedLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the obligations due for goods and services provided by the following types of related parties: a parent company and its subsidiaries, subsidiaries of a common parent, an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence.",
        "label": "Increase (Decrease) in Accounts Payable, Related Parties",
        "terseLabel": "Accounts payable to affiliates"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsPayableRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsReceivable": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.",
        "label": "Increase (Decrease) in Accounts Receivable",
        "negatedLabel": "Accounts receivable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount due to the reporting entity for good and services provided to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, member of their immediate families, affiliates, or other parties with the ability to exert significant influence.",
        "label": "Increase (Decrease) in Accounts Receivable, Related Parties",
        "negatedLabel": "Accounts receivable from affiliates"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsReceivableRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Increase (Decrease) in Operating Capital [Abstract]",
        "terseLabel": "Changes in operating assets and liabilities:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.",
        "label": "Increase (Decrease) in Other Operating Assets and Liabilities, Net",
        "negatedLabel": "Other"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingCapitalNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInPartnersCapitalRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Increase (Decrease) in Partners' Capital [Roll Forward]"
       }
      }
     },
     "localname": "IncreaseDecreaseInPartnersCapitalRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in prepaid expenses, and assets classified as other.",
        "label": "Increase (Decrease) in Prepaid Expense and Other Assets",
        "negatedLabel": "Prepaid expenses and other assets"
       }
      }
     },
     "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestCostsCapitalized": {
     "auth_ref": [
      "r271"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest capitalized during the period.",
        "label": "Interest Costs Capitalized",
        "terseLabel": "Capitalized interest"
       }
      }
     },
     "localname": "InterestCostsCapitalized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpense": {
     "auth_ref": [
      "r59",
      "r143",
      "r270",
      "r274",
      "r338"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.",
        "label": "Interest Expense",
        "negatedLabel": "Interest expense"
       }
      }
     },
     "localname": "InterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPaidNet": {
     "auth_ref": [
      "r82",
      "r85",
      "r92"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "label": "Interest Paid",
        "terseLabel": "Cash paid for interest"
       }
      }
     },
     "localname": "InterestPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InvestmentIncomeInterest": {
     "auth_ref": [
      "r70",
      "r142"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.",
        "label": "Investment Income, Interest",
        "terseLabel": "Interest income"
       }
      }
     },
     "localname": "InvestmentIncomeInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LandAndBuildingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Real estate held for productive use and structures used in the conduct of business, including but not limited to, office, production, storage and distribution facilities.",
        "label": "Land And Building [Member]",
        "terseLabel": "Land and Buildings [Member]"
       }
      }
     },
     "localname": "LandAndBuildingMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LeaseCost": {
     "auth_ref": [
      "r297",
      "r299"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease cost recognized by lessee for lease contract.",
        "label": "Lease, Cost",
        "totalLabel": "Total lease expense"
       }
      }
     },
     "localname": "LeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LeaseCostTableTextBlock": {
     "auth_ref": [
      "r297"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.",
        "label": "Lease, Cost [Table Text Block]",
        "terseLabel": "Components Of Lease Expense"
       }
      }
     },
     "localname": "LeaseCostTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LeaseholdImprovementsMember": {
     "auth_ref": [
      "r179"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Additions or improvements to assets held under a lease arrangement.",
        "label": "Leasehold Improvements [Member]",
        "terseLabel": "Leasehold Improvements And Other [Member]"
       }
      }
     },
     "localname": "LeaseholdImprovementsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LesseeLeasesPolicyTextBlock": {
     "auth_ref": [
      "r288"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for leasing arrangement entered into by lessee.",
        "label": "Lessee, Leases [Policy Text Block]",
        "terseLabel": "Leases"
       }
      }
     },
     "localname": "LesseeLeasesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": {
     "auth_ref": [
      "r298"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.",
        "label": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]",
        "terseLabel": "Schedule of Aggregate Minimum Lease Payments"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Five",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Four",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Three",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": {
     "auth_ref": [
      "r298"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Two",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": {
     "auth_ref": [
      "r298"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.",
        "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount",
        "negatedLabel": "Less: Present value discount"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseTermOfContract": {
     "auth_ref": [
      "r289"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Lessee, Operating Lease, Term of Contract",
        "terseLabel": "Lessee, Lease terms"
       }
      }
     },
     "localname": "LesseeOperatingLeaseTermOfContract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_LessorLeaseDescriptionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Lessor, Lease, Description [Line Items]"
       }
      }
     },
     "localname": "LessorLeaseDescriptionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LessorLeaseDescriptionTable": {
     "auth_ref": [
      "r303"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about lessor's leases.",
        "label": "Lessor, Lease, Description [Table]"
       }
      }
     },
     "localname": "LessorLeaseDescriptionTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceived": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor for operating lease.",
        "label": "Lessor, Operating Lease, Payments to be Received",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceived",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Five Years",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedFiveYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Four Years",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedFourYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor in next fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Next Twelve Months",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Thereafter",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedThereafter",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Three Years",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedThreeYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears": {
     "auth_ref": [
      "r301"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_LessorOperatingLeasePaymentsToBeReceived",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.",
        "label": "Lessor, Operating Lease, Payments to be Received, Two Years",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LessorOperatingLeasePaymentsToBeReceivedTwoYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSummaryOfMinimumFutureRentalRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LessorOperatingLeaseRenewalTerm": {
     "auth_ref": [
      "r302"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Lessor, Operating Lease, Renewal Term"
       }
      }
     },
     "localname": "LessorOperatingLeaseRenewalTerm",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_LessorOperatingLeaseTermOfContract": {
     "auth_ref": [
      "r302"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Lessor, Operating Lease, Term of Contract"
       }
      }
     },
     "localname": "LessorOperatingLeaseTermOfContract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_Liabilities": {
     "auth_ref": [
      "r46"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "label": "Liabilities",
        "totalLabel": "Total liabilities"
       }
      }
     },
     "localname": "Liabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "auth_ref": [
      "r34",
      "r332",
      "r345"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
        "label": "Liabilities and Equity",
        "totalLabel": "Total liabilities and partners' deficit"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "LIABILITIES AND MEMBERS' EQUITY",
        "terseLabel": "LIABILITIES AND PARTNERS' DEFICIT"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesCurrent": {
     "auth_ref": [
      "r48"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.",
        "label": "Liabilities, Current",
        "totalLabel": "Total current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities, Current [Abstract]",
        "terseLabel": "Current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LimitedPartnerMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Party to a partnership business who has limited liability.",
        "label": "Limited Partner [Member]",
        "terseLabel": "Limited Partners [Member]"
       }
      }
     },
     "localname": "LimitedPartnerMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LimitedPartnersCapitalAccountLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Limited Partners' Capital Account [Line Items]"
       }
      }
     },
     "localname": "LimitedPartnersCapitalAccountLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LimitedPartnersCapitalAccountUnitsIssued": {
     "auth_ref": [
      "r127",
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of limited partner units issued.",
        "label": "Limited Partners' Capital Account, Units Issued",
        "terseLabel": "Units issued"
       }
      }
     },
     "localname": "LimitedPartnersCapitalAccountUnitsIssued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding": {
     "auth_ref": [
      "r127",
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of limited partner units outstanding.",
        "label": "Limited Partners' Capital Account, Units Outstanding",
        "terseLabel": "Units outstanding"
       }
      }
     },
     "localname": "LimitedPartnersCapitalAccountUnitsOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_LineOfCredit": {
     "auth_ref": [
      "r28",
      "r331",
      "r341"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",
        "label": "Long-term Line of Credit",
        "terseLabel": "Line of credit, carrying value"
       }
      }
     },
     "localname": "LineOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": {
     "auth_ref": [
      "r44"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Maximum Borrowing Capacity",
        "verboseLabel": "Line of credit, maximum borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityMaximumBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.",
        "label": "Line of Credit Facility, Unused Capacity, Commitment Fee Percentage"
       }
      }
     },
     "localname": "LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LondonInterbankOfferedRateLIBORMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.",
        "label": "London Interbank Offered Rate L I B O R [Member]",
        "terseLabel": "LIBOR [Member]"
       }
      }
     },
     "localname": "LondonInterbankOfferedRateLIBORMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LongTermDebt": {
     "auth_ref": [
      "r28",
      "r201",
      "r331",
      "r344"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "LongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtCurrent": {
     "auth_ref": [
      "r45"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Current Maturities",
        "terseLabel": "Current maturities of long-term debt"
       }
      }
     },
     "localname": "LongTermDebtCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive": {
     "auth_ref": [
      "r105",
      "r199"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive": {
     "auth_ref": [
      "r105",
      "r199"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Five",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": {
     "auth_ref": [
      "r105",
      "r199"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Four",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
     "auth_ref": [
      "r105",
      "r199"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Three",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
     "auth_ref": [
      "r105",
      "r199"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Two",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear": {
     "auth_ref": [
      "r105"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtScheduleOfLongTermDebtRepaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtNoncurrent": {
     "auth_ref": [
      "r51"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Excluding Current Maturities",
        "terseLabel": "Long-term debt"
       }
      }
     },
     "localname": "LongTermDebtNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongtermDebtTypeAxis": {
     "auth_ref": [
      "r51"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of long-term debt.",
        "label": "Long-term Debt, Type [Axis]"
       }
      }
     },
     "localname": "LongtermDebtTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongtermDebtTypeDomain": {
     "auth_ref": [
      "r51",
      "r200"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Longterm Debt Type [Domain]",
        "terseLabel": "Long-term Debt, Type [Domain]"
       }
      }
     },
     "localname": "LongtermDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MaintenanceCostPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of the accounting policy for maintenance costs.  Does not  include planned major maintenance activities.",
        "label": "Maintenance Cost, Policy [Policy Text Block]",
        "terseLabel": "Operations and Maintenance Expenses"
       }
      }
     },
     "localname": "MaintenanceCostPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NatureOfOperations": {
     "auth_ref": [
      "r130",
      "r139"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.",
        "label": "Nature of Operations [Text Block]",
        "terseLabel": "Description of Business"
       }
      }
     },
     "localname": "NatureOfOperations",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessPolicy"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "auth_ref": [
      "r84"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "label": "Net Cash Provided by (Used in) Financing Activities",
        "totalLabel": "Net cash used in financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]",
        "terseLabel": "Cash flows from financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "auth_ref": [
      "r84"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "label": "Net Cash Provided by (Used in) Investing Activities",
        "totalLabel": "Net cash provided by (used in) investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]",
        "terseLabel": "Cash flows from investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "auth_ref": [
      "r84",
      "r86",
      "r89"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "totalLabel": "Net cash provided by operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Cash flows from operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetIncomeLoss": {
     "auth_ref": [
      "r56",
      "r57",
      "r63",
      "r89",
      "r119",
      "r337",
      "r350"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
        "label": "Net Income (Loss) Attributable to Parent",
        "terseLabel": "Net income",
        "totalLabel": "Net income"
       }
      }
     },
     "localname": "NetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable": {
     "auth_ref": [
      "r107",
      "r109"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Summarization of the changes in an accounting principle or a new accounting pronouncement, including the line items affected by the change and the financial effects of the change on those particular line items.",
        "label": "New Accounting Pronouncements or Change in Accounting Principle [Table]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.",
        "label": "New Accounting Pronouncements, Policy [Policy Text Block]",
        "terseLabel": "Recent Accounting Pronouncements"
       }
      }
     },
     "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NoncashInvestingAndFinancingItemsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Noncash Investing and Financing Items [Abstract]",
        "terseLabel": "Non-cash investing and financing activity:"
       }
      }
     },
     "localname": "NoncashInvestingAndFinancingItemsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NonoperatingIncomeExpense": {
     "auth_ref": [
      "r71"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).",
        "label": "Nonoperating Income (Expense)",
        "totalLabel": "Total other expense",
        "verboseLabel": "Other income (expense)"
       }
      }
     },
     "localname": "NonoperatingIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NonoperatingIncomeExpenseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Nonoperating Income (Expense) [Abstract]",
        "terseLabel": "Other income (expense)"
       }
      }
     },
     "localname": "NonoperatingIncomeExpenseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NotesAndLoansReceivableNetNoncurrent": {
     "auth_ref": [
      "r33"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.",
        "label": "Notes, Loans and Financing Receivable, Net, Noncurrent",
        "terseLabel": "Note receivable"
       }
      }
     },
     "localname": "NotesAndLoansReceivableNetNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NotesPayableToBanksMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A written promise to pay a note to a bank.",
        "label": "Notes Payable To Banks [Member]",
        "terseLabel": "Notes Payable to Banks [Member]"
       }
      }
     },
     "localname": "NotesPayableToBanksMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NotesReceivableMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) within one year of the balance sheet date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.",
        "label": "Notes Receivable [Member]",
        "terseLabel": "Notes Receivable [Member]"
       }
      }
     },
     "localname": "NotesReceivableMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NumberOfReportableSegments": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.",
        "label": "Number of Reportable Segments",
        "terseLabel": "Number of reportable segments"
       }
      }
     },
     "localname": "NumberOfReportableSegments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfReportingUnits": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.",
        "label": "Number of Reporting Units"
       }
      }
     },
     "localname": "NumberOfReportingUnits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureGoodwillNarrativeDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_OperatingExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Operating Expenses [Abstract]",
        "terseLabel": "Operating expenses"
       }
      }
     },
     "localname": "OperatingExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingIncomeLoss": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net result for the period of deducting operating expenses from operating revenues.",
        "label": "Operating Income (Loss)",
        "totalLabel": "Operating income"
       }
      }
     },
     "localname": "OperatingIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseCost": {
     "auth_ref": [
      "r290",
      "r299"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.",
        "label": "Operating Lease, Cost",
        "terseLabel": "Operating lease expense"
       }
      }
     },
     "localname": "OperatingLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLeaseIncome": {
     "auth_ref": [
      "r124",
      "r300",
      "r305"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.",
        "label": "Operating Lease, Lease Income",
        "totalLabel": "Total lease revenue"
       }
      }
     },
     "localname": "OperatingLeaseLeaseIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLeaseIncomeLeasePayments": {
     "auth_ref": [
      "r124",
      "r304"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingLeaseLeaseIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.",
        "label": "Operating Lease, Lease Income, Lease Payments",
        "terseLabel": "Operating lease revenue"
       }
      }
     },
     "localname": "OperatingLeaseLeaseIncomeLeasePayments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLeaseIncomeTableTextBlock": {
     "auth_ref": [
      "r124",
      "r305"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of components of income from operating lease.",
        "label": "Operating Lease, Lease Income [Table Text Block]",
        "terseLabel": "Components Of Lease Revenue"
       }
      }
     },
     "localname": "OperatingLeaseLeaseIncomeTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OperatingLeaseLiability": {
     "auth_ref": [
      "r286"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.",
        "label": "Operating Lease, Liability",
        "terseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityCurrent": {
     "auth_ref": [
      "r286"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.",
        "label": "Operating Lease, Liability, Current",
        "terseLabel": "Operating lease current liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityNoncurrent": {
     "auth_ref": [
      "r286"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.",
        "label": "Operating Lease, Liability, Noncurrent",
        "terseLabel": "Operating lease long-term liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasePayments": {
     "auth_ref": [
      "r287",
      "r293"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.",
        "label": "Operating Lease, Payments",
        "negatedLabel": "Operating lease liabilities and right-of-use assets"
       }
      }
     },
     "localname": "OperatingLeasePayments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseRightOfUseAsset": {
     "auth_ref": [
      "r285"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's right to use underlying asset under operating lease.",
        "label": "Operating Lease, Right-of-Use Asset",
        "terseLabel": "Operating lease right-of-use assets"
       }
      }
     },
     "localname": "OperatingLeaseRightOfUseAsset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": {
     "auth_ref": [
      "r296",
      "r299"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average discount rate for operating lease calculated at point in time.",
        "label": "Operating Lease, Weighted Average Discount Rate, Percent",
        "terseLabel": "Weighted average discount rate"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageDiscountRatePercent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": {
     "auth_ref": [
      "r295",
      "r299"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Operating Lease, Weighted Average Remaining Lease Term",
        "terseLabel": "Weighted average remaining lease term"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDue": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.",
        "label": "Operating Leases, Future Minimum Payments Due",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments Due, Next Twelve Months",
        "terseLabel": "2019"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments, Due in Five Years",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueInFiveYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments, Due in Four Years",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueInFourYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments, Due in Three Years",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueInThreeYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments, Due in Two Years",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueInTwoYears",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter": {
     "auth_ref": [
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Operating Leases, Future Minimum Payments, Due Thereafter",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueThereafter",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumLeasePaymentsRemainingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesIncomeStatementLeaseRevenue": {
     "auth_ref": [
      "r279"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.",
        "label": "Operating Leases, Income Statement, Lease Revenue",
        "terseLabel": "Total leasing revenues"
       }
      }
     },
     "localname": "OperatingLeasesIncomeStatementLeaseRevenue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock": {
     "auth_ref": [
      "r198",
      "r276",
      "r277",
      "r281",
      "r283"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.",
        "label": "Schedule of Aggregate Minimum Lease Payments Remaining"
       }
      }
     },
     "localname": "OperatingLeasesOfLesseeDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Basis of Presentation and Description of Business [Abstract]"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r106",
      "r113",
      "r139",
      "r265"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles.",
        "label": "Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]",
        "terseLabel": "Basis of Presentation and Description of Business"
       }
      }
     },
     "localname": "OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusiness"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OtherAssetsNoncurrent": {
     "auth_ref": [
      "r42"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of noncurrent assets classified as other.",
        "label": "Other Assets, Noncurrent",
        "verboseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitment": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.",
        "label": "Other Commitment",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "OtherCommitment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitmentDueInNextTwelveMonths": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OtherCommitment",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.",
        "label": "Other Commitment, Due in Next Twelve Months",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "OtherCommitmentDueInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitmentDueInSecondYear": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OtherCommitment",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.",
        "label": "Other Commitment, Due in Second Year",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "OtherCommitmentDueInSecondYear",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitmentDueInThirdYear": {
     "auth_ref": [],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OtherCommitment",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.",
        "label": "Other Commitment, Due in Third Year",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "OtherCommitmentDueInThirdYear",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesScheduleOfAggregateMinimumAgreementPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitmentsAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of other commitment.",
        "label": "Other Commitments [Axis]"
       }
      }
     },
     "localname": "OtherCommitmentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherCommitmentsDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other future obligation.",
        "label": "Other Commitments [Domain]",
        "terseLabel": "Other Commitments [Domain]"
       }
      }
     },
     "localname": "OtherCommitmentsDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherCommitmentsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Other Commitments [Line Items]"
       }
      }
     },
     "localname": "OtherCommitmentsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherCommitmentsTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about obligations resulting from other commitments.",
        "label": "Other Commitments [Table]"
       }
      }
     },
     "localname": "OtherCommitmentsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherMachineryAndEquipmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other tangible personal property, nonconsumable in nature, with finite lives used to produce goods and services.",
        "label": "Other Machinery And Equipment [Member]",
        "terseLabel": "Other Machinery And Equipment [Member]"
       }
      }
     },
     "localname": "OtherMachineryAndEquipmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherNoncashIncomeExpense": {
     "auth_ref": [
      "r89"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.",
        "label": "Other Noncash Income (Expense)",
        "negatedLabel": "Other"
       }
      }
     },
     "localname": "OtherNoncashIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherNonoperatingIncomeExpense": {
     "auth_ref": [
      "r72"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (expense) related to nonoperating activities, classified as other.",
        "label": "Other Nonoperating Income (Expense)",
        "terseLabel": "Other, net"
       }
      }
     },
     "localname": "OtherNonoperatingIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PartnerTypeOfPartnersCapitalAccountAxis": {
     "auth_ref": [
      "r126",
      "r209"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type or class of partner's capital account. Examples of classes of partners include, but not limited to, general partners, limited partners, preferred partners, and other ownership interests.",
        "label": "Partner Type [Axis]"
       }
      }
     },
     "localname": "PartnerTypeOfPartnersCapitalAccountAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain": {
     "auth_ref": [
      "r126",
      "r210",
      "r355"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Capital accounts of each type or class of partner. Examples of classes of partners include, but are not limited to, general partners, limited partners, preferred partners, and other ownership interests.",
        "label": "Partner Type Of Partners Capital Account Name [Domain]",
        "terseLabel": "Partner Type of Partners' Capital Account, Name [Domain]"
       }
      }
     },
     "localname": "PartnerTypeOfPartnersCapitalAccountNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PartnersCapital": {
     "auth_ref": [
      "r127",
      "r128",
      "r208"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of ownership interest of different classes of partners in limited partnership.",
        "label": "Partners' Capital",
        "periodEndLabel": "Balance, Ending period",
        "periodStartLabel": "Balance, Beginning period",
        "verboseLabel": "Total partners' deficit"
       }
      }
     },
     "localname": "PartnersCapital",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PartnersCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Members' Equity [Abstract]",
        "terseLabel": "Partners' deficit"
       }
      }
     },
     "localname": "PartnersCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PartnersCapitalAccountExchangesAndConversions": {
     "auth_ref": [
      "r208",
      "r210"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total change in each class of partners' capital accounts during the year due to exchanges and conversions. Partners include general, limited and preferred partners.",
        "label": "Partners' Capital Account, Exchanges and Conversions",
        "terseLabel": "Conversion of subordinated units"
       }
      }
     },
     "localname": "PartnersCapitalAccountExchangesAndConversions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PartnersCapitalAccountPeriodIncreaseDecrease": {
     "auth_ref": [
      "r208",
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Changes in the ownership interest during the period of each class of partners. Partners include general, limited and preferred partners.",
        "label": "Increase (Decrease) in Partners' Capital",
        "terseLabel": "Partners' deficit effect"
       }
      }
     },
     "localname": "PartnersCapitalAccountPeriodIncreaseDecrease",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PartnersCapitalAccountUnitBasedCompensation": {
     "auth_ref": [
      "r208",
      "r210"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.",
        "label": "Partners' Capital Account, Unit-based Compensation",
        "terseLabel": "Unit-based compensation, including general partner net contributions"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnitBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PartnersCapitalAccountUnits": {
     "auth_ref": [
      "r209",
      "r356",
      "r357"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.",
        "label": "Partners' Capital Account, Units",
        "periodEndLabel": "Units, End of period",
        "periodStartLabel": "Units, Beginning of period"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering": {
     "auth_ref": [
      "r208",
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.",
        "label": "Partners' Capital Account, Units, Sold in Public Offering",
        "terseLabel": "Common units from IPO"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnitsSoldInPublicOffering",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PartnersCapitalAccountUnitsUnitbasedCompensation": {
     "auth_ref": [
      "r129",
      "r208"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of units issued for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.",
        "label": "Partners' Capital Account, Units, Unit-based Compensation",
        "terseLabel": "Units issued under the LTIP"
       }
      }
     },
     "localname": "PartnersCapitalAccountUnitsUnitbasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PartnersCapitalNotesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Partners' Deficit [Abstract]"
       }
      }
     },
     "localname": "PartnersCapitalNotesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PartnersCapitalNotesDisclosureTextBlock": {
     "auth_ref": [
      "r211"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units.",
        "label": "Partners' Capital Notes Disclosure [Text Block]",
        "terseLabel": "Partners' Deficit"
       }
      }
     },
     "localname": "PartnersCapitalNotesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficit"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PaymentsOfDebtIssuanceCosts": {
     "auth_ref": [
      "r80"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.",
        "label": "Payments of Debt Issuance Costs",
        "negatedLabel": "Payments of loan fees"
       }
      }
     },
     "localname": "PaymentsOfDebtIssuanceCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDistributionsToAffiliates": {
     "auth_ref": [
      "r78"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.",
        "label": "Payments of Distributions to Affiliates",
        "negatedLabel": "Payments of distributions"
       }
      }
     },
     "localname": "PaymentsOfDistributionsToAffiliates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireEquityMethodInvestments": {
     "auth_ref": [
      "r74"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.",
        "label": "Payments to Acquire Equity Method Investments",
        "negatedTerseLabel": "Contributions to equity method investee"
       }
      }
     },
     "localname": "PaymentsToAcquireEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "negatedLabel": "Purchases of property and equipment"
       }
      }
     },
     "localname": "PaymentsToAcquirePropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PrepaidExpenseAndOtherAssetsCurrent": {
     "auth_ref": [
      "r20",
      "r35",
      "r36"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.",
        "label": "Prepaid Expense and Other Assets, Current",
        "terseLabel": "Prepaid expenses and other"
       }
      }
     },
     "localname": "PrepaidExpenseAndOtherAssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PriorPeriodReclassificationAdjustmentDescription": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements.",
        "label": "Reclassification, Policy [Policy Text Block]",
        "terseLabel": "Reclassifications"
       }
      }
     },
     "localname": "PriorPeriodReclassificationAdjustmentDescription",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessPolicy"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ProceedsFromLinesOfCredit": {
     "auth_ref": [
      "r76",
      "r102"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Proceeds from Lines of Credit",
        "terseLabel": "Proceeds from revolving credit facility"
       }
      }
     },
     "localname": "ProceedsFromLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": {
     "auth_ref": [
      "r77",
      "r81",
      "r104"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities classified as other.",
        "label": "Proceeds from (Payments for) Other Financing Activities",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "ProceedsFromPaymentsForOtherFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment": {
     "auth_ref": [
      "r73"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
        "label": "Proceeds from Sale of Property, Plant, and Equipment",
        "terseLabel": "Proceeds from the disposal of property and equipment"
       }
      }
     },
     "localname": "ProceedsFromSaleOfPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Property and Equipment [Abstract]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentByTypeAxis": {
     "auth_ref": [
      "r41",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.",
        "label": "Property, Plant and Equipment, Type [Axis]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentByTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": {
     "auth_ref": [
      "r185"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.",
        "label": "Property, Plant and Equipment Disclosure [Text Block]",
        "terseLabel": "Property and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipment"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentGross": {
     "auth_ref": [
      "r40",
      "r179"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Gross",
        "terseLabel": "Total property and equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Property, Plant and Equipment [Line Items]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentNet": {
     "auth_ref": [
      "r24",
      "r25",
      "r181",
      "r346"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Net",
        "netLabel": "Property and equipment, net",
        "totalLabel": "Property and equipment, net"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": {
     "auth_ref": [
      "r39",
      "r93",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments.",
        "label": "Property, Plant and Equipment, Policy [Policy Text Block]",
        "terseLabel": "Property and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTextBlock": {
     "auth_ref": [
      "r24",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table Text Block]",
        "verboseLabel": "Schedule of Estimated Useful Lives of Assets"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTypeDomain": {
     "auth_ref": [
      "r24",
      "r179"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.",
        "label": "Property Plant And Equipment Type [Domain]",
        "terseLabel": "Property, Plant and Equipment, Type [Domain]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Property, Plant and Equipment, Useful Life"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Quarterly Financial Data [Abstract]"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_QuarterlyFinancialInformationTextBlock": {
     "auth_ref": [
      "r125"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.",
        "label": "Quarterly Financial Information [Text Block]",
        "terseLabel": "Quarterly Financial Data"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialData"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RailroadTransportationEquipmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Equipment used for the primary purpose of rail transportation, including railroad cars, tracks and ties.",
        "label": "Railroad Transportation Equipment [Member]",
        "terseLabel": "Rail and Rail Equipment [Member]"
       }
      }
     },
     "localname": "RailroadTransportationEquipmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RatioOfIndebtednessToNetCapital1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indebtedness divided by net capital.",
        "label": "Ratio of Indebtedness to Net Capital",
        "terseLabel": "Net leverage ratio"
       }
      }
     },
     "localname": "RatioOfIndebtednessToNetCapital1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "us-gaap_ReceivableTypeDomain": {
     "auth_ref": [
      "r54"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Financing arrangement representing a contractual right to receive money either on demand or on fixed and determinable dates.",
        "label": "Receivable Type [Domain]",
        "terseLabel": "Receivable [Domain]"
       }
      }
     },
     "localname": "ReceivableTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyDomain": {
     "auth_ref": [
      "r313"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Domain]",
        "terseLabel": "Related Party [Domain]"
       }
      }
     },
     "localname": "RelatedPartyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionAmountsOfTransaction": {
     "auth_ref": [
      "r306",
      "r309",
      "r310"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transactions with related party during the financial reporting period.",
        "label": "Due to Other Related Parties, Current",
        "terseLabel": "Tank cleaning expense"
       }
      }
     },
     "localname": "RelatedPartyTransactionAmountsOfTransaction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionAxis": {
     "auth_ref": [
      "r223",
      "r308",
      "r309"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of related party transaction.",
        "label": "Related Party Transaction [Axis]"
       }
      }
     },
     "localname": "RelatedPartyTransactionAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Transaction between related party.",
        "label": "Related Party Transaction [Domain]",
        "terseLabel": "Related Party Transaction [Domain]"
       }
      }
     },
     "localname": "RelatedPartyTransactionDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty": {
     "auth_ref": [
      "r306"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.",
        "label": "Related Party Transaction, Expenses from Transactions with Related Party",
        "terseLabel": "Shared services expenses"
       }
      }
     },
     "localname": "RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Related Party Transaction [Line Items]"
       }
      }
     },
     "localname": "RelatedPartyTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Related Party Transactions [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": {
     "auth_ref": [
      "r223",
      "r308",
      "r309",
      "r315",
      "r316",
      "r317",
      "r318",
      "r319",
      "r320",
      "r321",
      "r322",
      "r323",
      "r324",
      "r325",
      "r326"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party Transactions, by Related Party [Axis]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsByRelatedPartyAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": {
     "auth_ref": [
      "r313"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Related Party Transactions Disclosure [Text Block]",
        "terseLabel": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RepaymentsOfLinesOfCredit": {
     "auth_ref": [
      "r79",
      "r102"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Repayments of Lines of Credit",
        "negatedTerseLabel": "Payments on revolving credit facility"
       }
      }
     },
     "localname": "RepaymentsOfLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Revenue [Abstract]"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": {
     "auth_ref": [
      "r216",
      "r217"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.",
        "label": "Revenue from Contract with Customer, Excluding Assessed Tax",
        "terseLabel": "Total service revenues"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerExcludingAssessedTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerTextBlock": {
     "auth_ref": [
      "r222"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.",
        "label": "Revenue from Contract with Customer [Text Block]",
        "terseLabel": "Revenue"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenue"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevenueFromRelatedParties": {
     "auth_ref": [
      "r67",
      "r358"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.",
        "label": "Revenue from Related Parties",
        "terseLabel": "Revenue from related parties"
       }
      }
     },
     "localname": "RevenueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueRecognitionPolicyTextBlock": {
     "auth_ref": [
      "r94",
      "r95"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.",
        "label": "Revenue Recognition, Policy [Policy Text Block]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueRecognitionPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_Revenues": {
     "auth_ref": [
      "r60",
      "r140",
      "r141",
      "r149"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
        "label": "Revenues",
        "terseLabel": "Total revenues",
        "totalLabel": "Total revenues"
       }
      }
     },
     "localname": "Revenues",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails",
      "http://www.gpreinc.com/role/DisclosureRevenueNarrativeDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenuesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Revenues [Abstract]",
        "terseLabel": "Revenues"
       }
      }
     },
     "localname": "RevenuesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevolvingCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.",
        "label": "Revolving Credit Facility [Member]",
        "terseLabel": "Revolving Credit Facility [Member]"
       }
      }
     },
     "localname": "RevolvingCreditFacilityMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": {
     "auth_ref": [
      "r294",
      "r299"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.",
        "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability",
        "terseLabel": "Right-of-use assets obtained in exchange for lease obligations, Operating leases"
       }
      }
     },
     "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesSupplementalCashFlowInformationRelatedToOperatingLeasesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleOfStockNameOfTransactionDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.",
        "label": "Sale Of Stock Name Of Transaction [Domain]",
        "terseLabel": "Sale of Stock [Domain]"
       }
      }
     },
     "localname": "SaleOfStockNameOfTransactionDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ScenarioPlanMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The scenario under which facts represent plans as distinct from actual.",
        "label": "Scenario Plan [Member]",
        "terseLabel": "Scenario, Plan [Member]"
       }
      }
     },
     "localname": "ScenarioPlanMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": {
     "auth_ref": [
      "r258",
      "r259"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.",
        "label": "Schedule of Business Acquisitions, by Acquisition [Table]"
       }
      }
     },
     "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock": {
     "auth_ref": [
      "r193"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.",
        "label": "Schedule of Change in Asset Retirement Obligation [Table Text Block]",
        "terseLabel": "Schedule of Change in the Liability for the Asset Retirement Obligations"
       }
      }
     },
     "localname": "ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureAssetRetirementObligationsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the change in common stock outstanding.",
        "label": "Schedule of Common Stock Outstanding Roll Forward [Table Text Block]",
        "terseLabel": "Rollforward of the Number of Common Limited Partner Units Outstanding"
       }
      }
     },
     "localname": "ScheduleOfCommonStockOutstandingRollForwardTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": {
     "auth_ref": [
      "r252"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
        "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
        "terseLabel": "Schedule Of Income Tax Expense (Benefit)"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock": {
     "auth_ref": [
      "r2",
      "r3",
      "r4",
      "r5",
      "r6",
      "r7",
      "r8",
      "r11",
      "r13",
      "r14",
      "r15",
      "r183",
      "r184"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.",
        "label": "Disposal Groups, Including Discontinued Operations [Table Text Block]",
        "terseLabel": "Summary Of Assets And Liabilities Disposed Of"
       }
      }
     },
     "localname": "ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsTable"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": {
     "auth_ref": [
      "r119"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.",
        "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]",
        "verboseLabel": "Schedule Of Basic And Diluted Earnings Per Unit"
       }
      }
     },
     "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": {
     "auth_ref": [
      "r244"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
        "terseLabel": "Schedule Of Differences Between The Income Tax Expense (Benefit)Computed At The Statutory Federal income Tax Rate And As Presented On The Consolidated Statements Of Operations"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable": {
     "auth_ref": [
      "r127",
      "r128",
      "r209"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of the varying rights, preferences and privileges of each class of limited partnership interest.",
        "label": "Schedule of Limited Partners' Capital Account by Class [Table]"
       }
      }
     },
     "localname": "ScheduleOfLimitedPartnersCapitalAccountByClassTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": {
     "auth_ref": [
      "r199"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.",
        "label": "Schedule of Maturities of Long-term Debt [Table Text Block]",
        "verboseLabel": "Schedule of Long-Term Debt Repayments"
       }
      }
     },
     "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock": {
     "auth_ref": [
      "r231"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the changes in outstanding nonvested performance-based units.",
        "label": "Schedule of Nonvested Performance-based Units Activity [Table Text Block]",
        "terseLabel": "Schedule of Non-vested Unit-based Award Activity"
       }
      }
     },
     "localname": "ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": {
     "auth_ref": [
      "r41",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table]"
       }
      }
     },
     "localname": "ScheduleOfPropertyPlantAndEquipmentTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosurePropertyAndEquipmentScheduleOfComponentsOfPropertyAndEquipmentDetails",
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": {
     "auth_ref": [
      "r123"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.",
        "label": "Schedule of Quarterly Financial Information [Table Text Block]",
        "terseLabel": "Schedule of Quarterly Financial Information"
       }
      }
     },
     "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": {
     "auth_ref": [
      "r100",
      "r308",
      "r309",
      "r310",
      "r311",
      "r312"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Schedule of Related Party Transactions, by Related Party [Table]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEquityMethodInvestmentNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": {
     "auth_ref": [
      "r226",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about share-based payment arrangement.",
        "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SegmentReportingPolicyPolicyTextBlock": {
     "auth_ref": [
      "r93"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for segment reporting.",
        "label": "Segment Reporting, Policy [Policy Text Block]",
        "terseLabel": "Segment Reporting"
       }
      }
     },
     "localname": "SegmentReportingPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r241"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for inclusion of significant items in the selling, general and administrative (or similar) expense report caption.",
        "label": "Selling, General and Administrative Expenses, Policy [Policy Text Block]",
        "terseLabel": "General and Administrative Expenses"
       }
      }
     },
     "localname": "SellingGeneralAndAdministrativeExpensesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ServiceMember": {
     "auth_ref": [
      "r220"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Assistance, including, but not limited to, technology, license and maintenance, license and service, maintenance, oil and gas, and financial service.",
        "label": "Service [Member]",
        "terseLabel": "Service Revenues [Member]"
       }
      }
     },
     "localname": "ServiceMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureRevenueDisaggregatationOfRevenueByMajorSourceDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensation": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of noncash expense for share-based payment arrangement.",
        "label": "Share-based Compensation",
        "terseLabel": "Unit-based compensation"
       }
      }
     },
     "localname": "ShareBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Unit-Based Compensation [Abstract]"
       }
      }
     },
     "localname": "ShareBasedCompensationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1": {
     "auth_ref": [
      "r227"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period",
        "terseLabel": "Unit based compensation, requisite service period"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": {
     "auth_ref": [
      "r233"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period",
        "verboseLabel": "Non-Vested Units, Granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r233"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Weighted-Average Grant-Date Fair Value, Granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": {
     "auth_ref": [
      "r232"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number",
        "periodEndLabel": "Non-Vested Units, Non-vested at end of period",
        "periodStartLabel": "Non-Vested Units, Non-vested at beginning of period"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r232"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value",
        "periodEndLabel": "Weighted-Average Grant-Date Fair Value, Non-vested at end of period",
        "periodStartLabel": "Weighted-Average Grant-Date Fair Value, Non-vested at beginning of period"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms": {
     "auth_ref": [
      "r235"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Term",
        "terseLabel": "Weighted-Average Remaining Vesting Term (in years)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": {
     "auth_ref": [
      "r234"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period",
        "negatedLabel": "Non-Vested Units, Vested"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r234"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Weighted-Average Grant-Date Fair Value, Vested"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationScheduleOfNonVestedUnitBasedAwardActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": {
     "auth_ref": [
      "r228"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of shares authorized for issuance under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized",
        "terseLabel": "Number of shares authorized"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "auth_ref": [
      "r224",
      "r229"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Award under share-based payment arrangement.",
        "label": "Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]",
        "terseLabel": "Equity Award [Domain]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureUnitBasedCompensationNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy": {
     "auth_ref": [
      "r93",
      "r226",
      "r230"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for award under share-based payment arrangement. Includes, but is not limited to, methodology and assumption used in measuring cost.",
        "label": "Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]",
        "terseLabel": "Unit-Based Compensation"
       }
      }
     },
     "localname": "ShareBasedCompensationOptionAndIncentivePlansPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ShortTermLeaseCost": {
     "auth_ref": [
      "r291",
      "r299"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of short-term lease cost, excluding expense for lease with term of one month or less.",
        "label": "Short-term Lease, Cost",
        "terseLabel": "Short-term lease expense"
       }
      }
     },
     "localname": "ShortTermLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SignificantAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r106"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.",
        "label": "Significant Accounting Policies [Text Block]",
        "terseLabel": "Summary Of Significant Accounting Policies"
       }
      }
     },
     "localname": "SignificantAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_StatementClassOfStockAxis": {
     "auth_ref": [
      "r29",
      "r30",
      "r31",
      "r203"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by the different classes of stock of the entity.",
        "label": "Class of Stock [Axis]"
       }
      }
     },
     "localname": "StatementClassOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDispositionsSummaryOfAssetsAndLiabilitiesDisposedOfDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitScheduleOfAllocationOfTotalCashDistributionsToGeneralAndLimitedPartnersDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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.",
        "label": "Statement [Line Items]"
       }
      }
     },
     "localname": "StatementLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Statements of Cash Flows [Abstract]"
       }
      }
     },
     "localname": "StatementOfCashFlowsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfFinancialPositionAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Balance Sheets [Abstract]"
       }
      }
     },
     "localname": "StatementOfFinancialPositionAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfPartnersCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Statements of Partners' Deficit [Abstract]"
       }
      }
     },
     "localname": "StatementOfPartnersCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.",
        "label": "Statement [Table]"
       }
      }
     },
     "localname": "StatementTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesTables",
      "http://www.gpreinc.com/role/DisclosurePartnersDeficitRollforwardOfNumberOfCommonLimitedPartnerUnitsOutstandingDetails",
      "http://www.gpreinc.com/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheets",
      "http://www.gpreinc.com/role/StatementConsolidatedBalanceSheetsParenthetical",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfPartnersDeficit"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubleaseIncome": {
     "auth_ref": [
      "r292",
      "r299"
     ],
     "calculation": {
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingLeaseLeaseIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of sublease income excluding finance and operating lease expense.",
        "label": "Sublease Income",
        "terseLabel": "Sublease revenue"
       }
      }
     },
     "localname": "SubleaseIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesComponentsOfLeaseRevenueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SubsidiarySaleOfStockAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of sale of the entity's stock.",
        "label": "Sale of Stock [Axis]"
       }
      }
     },
     "localname": "SubsidiarySaleOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.gpreinc.com/role/DisclosureRelatedPartyTransactionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementalCashFlowInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Supplemental Cash Flow Information [Abstract]",
        "terseLabel": "Supplemental disclosures of cash flow"
       }
      }
     },
     "localname": "SupplementalCashFlowInformationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxesPayableCurrentAndNoncurrent": {
     "auth_ref": [
      "r27",
      "r330",
      "r343"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes.",
        "label": "Taxes Payable"
       }
      }
     },
     "localname": "TaxesPayableCurrentAndNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureIncomeTaxesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TradeAndOtherAccountsReceivablePolicy": {
     "auth_ref": [
      "r154",
      "r155",
      "r156",
      "r157",
      "r158",
      "r159"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for accounts receivable.",
        "label": "Trade and Other Accounts Receivable, Policy [Policy Text Block]",
        "terseLabel": "Accounts Receivable"
       }
      }
     },
     "localname": "TradeAndOtherAccountsReceivablePolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_TypeOfAdoptionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Adoption and early adoption of sources of change to generally accepted accounting principles (GAAP) in the United States. The FASB released the FASB Accounting Standards Codification as the authoritative source of literature effective for interim and annual periods ending after September 15, 2009. As part of the Codification process, the FASB issues Accounting Standards Updates to amend the Codification but otherwise the Accounting Standards Updates are not authoritative in their own right. All previous accounting standards (such as FASB Statements of Financial Accounting Standards, FASB Interpretations, FASB Staff Positions, Emerging Issues Task Force Consensuses, other pronouncements of the FASB or other designated bodies, or other forms of GAAP are considered accounting pronouncements) were superseded upon the adoption of the Codification. For an interim period, references to the superseded standards are included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.",
        "label": "Type Of Adoption [Member]",
        "terseLabel": "Type of Adoption [Domain]"
       }
      }
     },
     "localname": "TypeOfAdoptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureCommitmentsAndContingenciesImpactOnConsolidatedBalanceSheetFromAdoptionOfNewLeaseStandardDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_UseOfEstimates": {
     "auth_ref": [
      "r131",
      "r132",
      "r134",
      "r135",
      "r136",
      "r137",
      "r138"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "terseLabel": "Use of Estimates in the Preparation of Consolidated Financial Statements"
       }
      }
     },
     "localname": "UseOfEstimates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureBasisOfPresentationAndDescriptionOfBusinessPolicy"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_VariableRateAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of variable rate.",
        "label": "Variable Rate [Axis]"
       }
      }
     },
     "localname": "VariableRateAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VariableRateDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.",
        "label": "Variable Rate [Domain]",
        "terseLabel": "Variable Rate [Domain]"
       }
      }
     },
     "localname": "VariableRateDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).",
        "label": "Weighted Average Number of Shares Outstanding, Basic and Diluted",
        "terseLabel": "Weighted-average units outstanding - basic and diluted",
        "verboseLabel": "Weighted average limited partner units outstanding (basic and diluted)"
       }
      }
     },
     "localname": "WeightedAverageNumberOfShareOutstandingBasicAndDiluted",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/DisclosureEarningsPerUnitScheduleOfBasicAndDilutedEarningsPerUnitDetails",
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]",
        "verboseLabel": "Weighted average limited partner units outstanding (basic and diluted):"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.gpreinc.com/role/StatementConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    }
   },
   "unitCount": 10
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755"
  },
  "r1": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222160&loc=d3e1107-107759"
  },
  "r10": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760"
  },
  "r100": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r101": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(e),(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r102": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r103": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(k)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r104": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r105": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04.(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r106": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "235",
   "URI": "http://asc.fasb.org/topic&trid=2122369"
  },
  "r107": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r108": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
  },
  "r109": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794"
  },
  "r11": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760"
  },
  "r110": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
  },
  "r111": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794"
  },
  "r112": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794"
  },
  "r113": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "250",
   "URI": "http://asc.fasb.org/topic&trid=2122394"
  },
  "r114": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256"
  },
  "r115": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "72",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6926462&loc=SL5163672-159010"
  },
  "r116": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "73",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6926462&loc=SL5163674-159010"
  },
  "r117": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r118": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r119": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r12": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(2)",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760"
  },
  "r120": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257"
  },
  "r121": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "103",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=109243028&loc=SL5199526-159011"
  },
  "r122": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "260",
   "URI": "http://asc.fasb.org/topic&trid=2144383"
  },
  "r123": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306"
  },
  "r124": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=118952077&loc=SL77927221-108306"
  },
  "r125": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "270",
   "URI": "http://asc.fasb.org/topic&trid=2126967"
  },
  "r126": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054"
  },
  "r127": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055"
  },
  "r128": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055"
  },
  "r129": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055"
  },
  "r13": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760"
  },
  "r130": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r131": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r132": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r133": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r134": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
  },
  "r135": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
  },
  "r136": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
  },
  "r137": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
  },
  "r138": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
  },
  "r139": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "275",
   "URI": "http://asc.fasb.org/topic&trid=2134479"
  },
  "r14": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721677-107760"
  },
  "r140": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r141": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r142": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r143": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r144": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r145": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r146": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r147": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r148": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599"
  },
  "r149": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599"
  },
  "r15": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760"
  },
  "r150": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599"
  },
  "r151": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "42",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9054-108599"
  },
  "r152": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522"
  },
  "r153": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4531-111522"
  },
  "r154": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e4975-111524"
  },
  "r155": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524"
  },
  "r156": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524"
  },
  "r157": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5033-111524"
  },
  "r158": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5093-111524"
  },
  "r159": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10133-111534"
  },
  "r16": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/subtopic&trid=2122178"
  },
  "r160": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570"
  },
  "r161": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33912-111571"
  },
  "r162": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r163": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r164": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r165": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r166": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "323",
   "URI": "http://asc.fasb.org/topic&trid=2196965"
  },
  "r167": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266"
  },
  "r168": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266"
  },
  "r169": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975"
  },
  "r17": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r170": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
  },
  "r171": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
  },
  "r172": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267"
  },
  "r173": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/subtopic&trid=2144439"
  },
  "r174": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r175": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275"
  },
  "r176": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2599-110228"
  },
  "r177": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228"
  },
  "r178": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r179": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r18": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r180": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r181": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r182": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
  },
  "r183": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
  },
  "r184": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=SL51724579-110230"
  },
  "r185": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "360",
   "URI": "http://asc.fasb.org/topic&trid=2155823"
  },
  "r186": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848"
  },
  "r187": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r188": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(1)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r189": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r19": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r190": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(3)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r191": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r192": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/subtopic&trid=2175671"
  },
  "r193": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859"
  },
  "r194": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "440",
   "URI": "http://asc.fasb.org/topic&trid=2144648"
  },
  "r195": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349"
  },
  "r196": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14615-108349"
  },
  "r197": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "450",
   "URI": "http://asc.fasb.org/topic&trid=2127136"
  },
  "r198": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248"
  },
  "r199": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601"
  },
  "r2": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759"
  },
  "r20": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r200": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601"
  },
  "r201": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
  },
  "r202": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "470",
   "URI": "http://asc.fasb.org/topic&trid=2208564"
  },
  "r203": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644"
  },
  "r204": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644"
  },
  "r205": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644"
  },
  "r206": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644"
  },
  "r207": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644"
  },
  "r208": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-04)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770"
  },
  "r209": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 4.F)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770"
  },
  "r21": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6801-107765"
  },
  "r210": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 4.F)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770"
  },
  "r211": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "505",
   "URI": "http://asc.fasb.org/topic&trid=2208762"
  },
  "r212": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044"
  },
  "r213": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044"
  },
  "r214": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045"
  },
  "r215": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045"
  },
  "r216": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045"
  },
  "r217": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045"
  },
  "r218": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045"
  },
  "r219": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045"
  },
  "r22": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r220": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
  },
  "r221": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
  },
  "r222": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "606",
   "URI": "http://asc.fasb.org/topic&trid=49130388"
  },
  "r223": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(n)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r224": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r225": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r226": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r227": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r228": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r229": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r23": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(11))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r230": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b),(f)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r231": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r232": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(i)-(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r233": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r234": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r235": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r236": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r237": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r238": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r239": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.F)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
  },
  "r24": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(13))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r240": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "718",
   "URI": "http://asc.fasb.org/topic&trid=2228938"
  },
  "r241": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "35",
   "Subparagraph": "(a)",
   "Topic": "720",
   "URI": "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848"
  },
  "r242": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32247-109318"
  },
  "r243": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32280-109318"
  },
  "r244": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319"
  },
  "r245": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319"
  },
  "r246": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319"
  },
  "r247": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319"
  },
  "r248": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r249": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319"
  },
  "r25": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(14))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r250": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r251": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r252": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r253": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r254": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r255": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324"
  },
  "r256": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "30",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327"
  },
  "r257": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "740",
   "URI": "http://asc.fasb.org/topic&trid=2144680"
  },
  "r258": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
  },
  "r259": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463"
  },
  "r26": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r260": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4613673-111683"
  },
  "r261": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
  },
  "r262": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-02)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828"
  },
  "r263": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-03)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828"
  },
  "r264": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-04)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355119-122828"
  },
  "r265": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "810",
   "URI": "http://asc.fasb.org/topic&trid=2197479"
  },
  "r266": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(2)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r267": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r268": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612"
  },
  "r269": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "230",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906"
  },
  "r27": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(20))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r270": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r271": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r272": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399"
  },
  "r273": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399"
  },
  "r274": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399"
  },
  "r275": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400"
  },
  "r276": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694"
  },
  "r277": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(Note 1,3)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697"
  },
  "r278": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(Note 3)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697"
  },
  "r279": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "20",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707"
  },
  "r28": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(22))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r280": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902458&loc=d3e39927-112707"
  },
  "r281": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717"
  },
  "r282": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717"
  },
  "r283": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717"
  },
  "r284": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984"
  },
  "r285": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
  },
  "r286": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
  },
  "r287": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977"
  },
  "r288": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918666-209980"
  },
  "r289": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980"
  },
  "r29": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(27))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r290": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r291": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r292": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r293": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(1)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r294": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(2)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r295": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r296": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(4)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r297": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r298": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980"
  },
  "r299": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "53",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971"
  },
  "r3": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760"
  },
  "r30": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(28))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r300": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888421&loc=SL77919311-209978"
  },
  "r301": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981"
  },
  "r302": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119202524&loc=SL77919359-209981"
  },
  "r303": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119202524&loc=SL77919359-209981"
  },
  "r304": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981"
  },
  "r305": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981"
  },
  "r306": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r307": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r308": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r309": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864"
  },
  "r31": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(29))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r310": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864"
  },
  "r311": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864"
  },
  "r312": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
  },
  "r313": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "850",
   "URI": "http://asc.fasb.org/topic&trid=2122745"
  },
  "r314": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662"
  },
  "r315": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r316": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r317": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r318": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r319": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r32": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3)(a)(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r320": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r321": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r322": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r323": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r324": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r325": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(1)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r326": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(2)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r327": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "20",
   "Topic": "940",
   "URI": "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953"
  },
  "r328": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(11))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r329": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(13))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r33": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r330": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(1))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r331": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(16))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r332": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r333": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.10(3))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r334": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.17)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r335": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(13)(f))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r336": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(15))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r337": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(22))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r338": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.9)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r339": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r34": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(32))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r340": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "825",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788"
  },
  "r341": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r342": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(12))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r343": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(15))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r344": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r345": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(25))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r346": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r347": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.(a),19)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r348": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.3)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r349": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(10))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r35": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(7))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r350": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(18))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r351": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r352": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
  },
  "r353": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
  },
  "r354": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
  },
  "r355": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.6-04(16))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996"
  },
  "r356": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.6-04.16(a))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996"
  },
  "r357": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.6-04.16(b))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996"
  },
  "r358": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.6-07.1(c))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=116637345&loc=SL114874292-224272"
  },
  "r359": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650"
  },
  "r36": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(8))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r360": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 4))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024"
  },
  "r361": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b"
  },
  "r362": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r363": {
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13",
   "Subsection": "a-1-"
  },
  "r364": {
   "Name": "Forms 10-K, 20-F, 40-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "15",
   "Subsection": "d-1"
  },
  "r365": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r366": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(a)",
   "Publisher": "SEC",
   "Section": "303",
   "Subparagraph": "(5)"
  },
  "r367": {
   "Name": "Regulation S-T",
   "Number": "232",
   "Publisher": "SEC",
   "Section": "405"
  },
  "r368": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "11",
   "Subsection": "03"
  },
  "r369": {
   "Footnote": "4",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r37": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.1)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r370": {
   "Name": "Securities Act",
   "Number": "7A",
   "Publisher": "SEC",
   "Section": "B",
   "Subsection": "2"
  },
  "r38": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.12)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r39": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r4": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1474-107760"
  },
  "r40": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r41": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.14)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r42": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.17)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r43": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r44": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(b),22(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r45": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19,20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r46": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19-26)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r47": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r48": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.21)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r49": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r5": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721659-107760"
  },
  "r50": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r51": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r52": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.25)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r53": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.26(c))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r54": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3,4)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r55": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.9)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r56": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
  },
  "r57": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
  },
  "r58": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116657188&loc=SL116659661-227067"
  },
  "r59": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(210.5-03(11))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r6": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721663-107760"
  },
  "r60": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(1))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r61": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(10))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r62": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(12))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r63": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(20))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r64": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(8))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r65": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(b)(2))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r66": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r67": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.1(e))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r68": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.13)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r69": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.4)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r7": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760"
  },
  "r70": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7(b))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r71": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r72": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.9)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r73": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585"
  },
  "r74": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
  },
  "r75": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
  },
  "r76": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r77": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r78": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r79": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r8": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721671-107760"
  },
  "r80": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r81": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r82": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585"
  },
  "r83": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21D",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=SL94080555-108585"
  },
  "r84": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585"
  },
  "r85": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r86": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r87": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r88": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r89": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r9": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760"
  },
  "r90": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585"
  },
  "r91": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586"
  },
  "r92": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586"
  },
  "r93": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790"
  },
  "r94": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
  },
  "r95": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
  },
  "r96": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(g))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r97": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r98": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r99": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  }
 },
 "version": "2.1"
}
