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Commitments, Contingencies and Other Matters - Additional Information (Details) |  |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
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Jan. 01, 2024 USD ($) | Dec. 18, 2023 Bed | Dec. 04, 2023 | Nov. 29, 2023 | Apr. 28, 2023 | Jan. 09, 2023 | Oct. 31, 2021 USD ($) | Jun. 22, 2021 | Dec. 31, 2023 Bed Contract | Sep. 30, 2023 Bed Contract | Mar. 31, 2023 Bed | Dec. 31, 2023 USD ($) | Dec. 31, 2021
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Equity incentive award vesting period |  |  |  |  |  |  |  |  |  |  |  |  | 3 years
Estimated construction existing active capital projects cost |  |  |  |  |  |  |  |  |  |  |  | $ 61,300,000 |
Contract commencement date |  |  |  |  | May 01, 2023 | Jul. 01, 2023 |  |  |  |  |  |  |
Cost already spent on existing active capital projects |  |  |  |  |  |  |  |  |  |  |  | 49,000,000 |
Remaining capital required for existing active capital projects |  |  |  |  |  |  |  |  |  |  |  | 12,300,000 |
Payment to a settlement class |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |
Loss contingency, judgement value |  |  |  |  |  |  | $ 23,200,000 |  |  |  |  |  |
Attorneys fees costs and interest amount |  |  |  |  |  |  | $ 14,400,000 |  |  |  |  |  |
Estimate of possible loss |  |  |  |  |  |  |  |  |  |  |  | $ 21,100,000 |
U.S. Marshals Service |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of contract renewed | Contract |  |  |  |  |  |  |  |  |  | 2 |  |  |
ICE |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of contract renewed | Contract |  |  |  |  |  |  |  |  |  | 3 |  |  |
Jose Gordo | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date | Jan. 01, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Agreement term | 18 months |  |  |  |  |  |  |  |  |  |  |  |
Agreement termination date | Jun. 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary payable | $ 40,000 |  |  |  |  |  |  |  |  |  |  |  |
Brian Evans | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date | Jan. 01, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Separation And General Release Agreement | Performance Shares |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Equity incentive award vesting period |  |  |  |  |  |  |  |  |  |  |  | 18 months |
Separation And General Release Agreement | Jose Gordo |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement date |  |  |  | Nov. 29, 2023 |  |  |  |  |  |  |  |  |
Deferred compensation arrangement with individual, description |  |  |  |  |  |  |  |  |  |  |  | Pursuant to the terms of the Separation Agreement, Mr. Gordo will: (i) receive all accrued wages through December 31, 2023, less applicable withholdings; (ii) be eligible to receive a target annual performance award for the year ended December 31, 2023 pursuant to the terms of GEO’s Performance Award Plan, if and to the extent earned, at the same time as other senior management employees participating in the Performance Award Plan; and (iii) be entitled to the payment of health insurance premiums under COBRA for a period ending on the earlier of eighteen (18) months following the Separation Date or the date he is no longer entitled to receive COBRA continuation coverage. Under the terms of the Separation Agreement, Mr. Gordo’s equity award agreements will survive the separation of his employment except that performance shares shall only vest during the 18-month period of the Advisory Agreement. The Separation Agreement also contains a mutual release, cooperation and non-disparagement provisions. |
Advisory Services Agreement | Jose Gordo |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement date |  |  |  | Nov. 29, 2023 |  |  |  |  |  |  |  |  |
Executive Employment Agreement | Brian Evans |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement date |  |  | Dec. 04, 2023 |  |  |  |  |  |  |  |  |  |
Deferred compensation arrangement with individual, description |  |  |  |  |  |  |  |  |  |  |  | The Evans Employment Agreement provides that upon the separation of employment by Mr. Evans for good reason, by the Company without cause or upon the death or disability of Mr. Evans, he will be entitled to receive a separation payment equal to two (2) times the sum of his annual base salary. The Company will also continue to provide Mr. Evans and any covered dependents with the Executive Benefits as defined in the Evans Employment Agreement for a period of five (5) years after the date of separation. |
Executive Employment Agreement | Brian Evans | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date | Jan. 01, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Agreement term | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary payable | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of annual performance award entitled | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Executive Employment Agreement | Shayn March |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date |  |  |  |  |  |  |  | Jun. 22, 2021 |  |  |  |  |
Agreement term |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Deferred compensation arrangement with individual, description |  |  |  |  |  |  |  |  |  |  |  | The March Employment Agreement provides that upon the separation of employment by the Company without cause or upon the death or disability of Mr. March, he will be entitled to receive a separation payment equal to the current annual base salary for the greater of: (i) the remainder of the term or (ii) twelve (12) months. The Company will also continue to provide Mr. March and any covered dependents with the Employee Benefits as defined in the March Employment Agreement for a period of twelve (12) months after the date of separation. In the event of Mr. March’s death within such twelve (12) month period, the Company will continue to provide the Employee Benefits to Mr. March’s covered dependents, and, if applicable to Mr. March’s estate. Lastly, all of the outstanding and unvested stock options and restricted stock granted to Mr. March prior to separation will continue to vest for the greater of: (i) the remainder of the term or (ii) twelve (12) months. Upon a separation of employment by the Company for cause or a resignation by Mr. March, Mr. March will be entitled to only the amount of compensation that is due through the effective date of the separation. |
Executive Employment Agreement | Shayn March | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date | Jan. 01, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary payable | $ 450,000 |  |  |  |  |  |  |  |  |  |  |  |
Executive Employment Agreement | Wayne Calabrese |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred compensation arrangement with individual, description |  |  |  |  |  |  |  |  |  |  |  | The Calabrese Employment Agreement provides that upon a separation of employment by Mr. Calabrese for good reason or by the Company without cause or upon the death or disability of Mr. Calabrese, he will be entitled to a lump sum separation payment equal to Mr. Calabrese’s annual base salary for six (6) months. In addition, the Calabrese Employment Agreement provides that upon such separation, the Company will transfer all of its interest in any automobile used by Mr. Calabrese pursuant to its Executive Automobile Policy and pay the balance of any outstanding loans or leases on such automobile so that Mr. Calabrese owns the automobile outright |
Executive Employment Agreement | Wayne Calabrese | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement effective date | Jan. 01, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Agreement term | 2 years |  |  |  |  |  |  |  |  |  |  |  |
Agreement termination date | Dec. 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary payable | $ 700,000 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of annual performance award entitled | 80.00% |  |  |  |  |  |  |  |  |  |  |  |
Adelanto ICE Processing Center |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Design Capacity | Bed |  | 1,940 |  |  |  |  |  |  |  |  |  |  |
Rio Grande Processing Center |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  | 1,900 |  |  |
Broward Transitional Center |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  |  | 1 year |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  | 700 |  |  |
South Texas ICE Processing Center |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  | 1,904 |  |  |
Montgomery Processing Center |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  |  | 9 months |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  | 1,314 |  |  |
Western Region Detention Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  |  | 2 years |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  | 770 |  |  |
Robet Deyton Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  |  |  | 5 years |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  |  |  | 768 |  |
Residential Reentry |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of contract renewed | Contract |  |  |  |  |  |  |  |  | 5 |  |  |  |
Aurora ICE Processing Center and Associated Secure Support Services |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  | 1 year |  |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  | 1,532 |  |  |  |
El Centro Detention Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  | 512 |  |  |  |
Guadalupe County Correctional Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Life term of contract |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Design Capacity | Bed |  |  |  |  |  |  |  |  | 600 |  |  |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | United States and International |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  |  |  |  |  |  | 49.00% |
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year | Labor Force Concentration Risk | United States and International |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  |  |  |  |  |  | 27.00% |

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