XML 78 R67.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments, Contingencies and Other (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) facility bed | Feb. 08, 2017 USD ($)
Commitments and Contingencies [Line Items] |  |
Estimate of possible loss | $ 19.6 |
Estimated construction capital project cost | 239.5 |
Cost already spent on existing capital projects | 129.7 |
Remaining capital required for capital projects | $ 109.8 |
Number of vacant beds at idle facilities marketed to potential customers | bed | 5,400 |
Number of marketed idle facilities | facility | 5 |
Property and Equipment |  |
Commitments and Contingencies [Line Items] |  |
Carrying values of idle facilities marketed to potential customers | $ 138.5 |
Pending Litigation | Attorney General of Mississippi vs Company, Cornell Companies, Inc., Christopher B Epps And Cecil McCrory |  |
Commitments and Contingencies [Line Items] |  |
Contracts disputed |  | $ 256.0

X
- Definition Carrying Values of Idle Facilities Marketed to Potential Customers + References No definition available. + Details
Name: | geo_CarryingValuesOfIdleFacilitiesMarketedToPotentialCustomers
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Commitments and Contingencies. + References No definition available. + Details
Name: | geo_CommitmentsAndContingenciesLineItems
Namespace Prefix: | geo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cost already spent on existing capital projects. + References No definition available. + Details
Name: | geo_CostAlreadySpentOnExistingCapitalProjects
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Estimated construction capital project cost. + References No definition available. + Details
Name: | geo_EstimatedConstructionCapitalProjectCost
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Contingency, Contracts Disputed + References No definition available. + Details
Name: | geo_LossContingencyContractsDisputed
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of Marketed Idle Facilities + References No definition available. + Details
Name: | geo_NumberOfMarketedIdleFacilities
Namespace Prefix: | geo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Vacant Beds at Idle Facilities Marketed to Potential Customers + References No definition available. + Details
Name: | geo_NumberOfVacantBedsAtIdleFacilitiesMarketedToPotentialCustomers
Namespace Prefix: | geo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Remaining capital required for capital projects. + References No definition available. + Details
Name: | geo_RemainingCapitalRequiredForCapitalProjects
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Estimated amount of loss resulting from an adverse tax position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationCaseAxis=geo_AttorneyGeneralofMississippivsCompanyCornellCompaniesInc.ChristopherBEppsAndCecilMcCroryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |