v3.25.3

Business Segments and Geographic Information - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Segment Facility	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Schedule Of Equity Method Investments [Line Items]
Number of reportable business segments \| Segment			4
Equity in earnings (losses) of affiliates, net of income tax provision	$ 759	$ 832	$ 3,764	$ 1,671
Number of managed correctional facilities in Australia \| Facility			3
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]			srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description			Revenue and operating income for each segment are used by the CODM to assess the performance of each segment in a financial period. The performance of the operating segments is evaluated based on segment operating income, which is defined as income before income taxes before the following: unallocated corporate general and administrative expenses, interest expense, net, and loss on extinguishment of debt not allocated to the operating segments. The CODM uses segment operating income as the measure to make resource (including financial or capital resources) allocation decisions for each segment, predominantly in the annual budget and forecasting process.
SACS
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in entity			50.00%
Equity in earnings (losses) of affiliates, net of income tax provision			$ 1,900	(100)
Investment in joint venture	8,400		$ 8,400		$ 8,100
GEO Amey
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in entity			50.00%
Equity in earnings (losses) of affiliates, net of income tax provision			$ 1,900	$ 1,500
Advances to affiliate	$ 9,600		$ 9,600		$ 10,300

Number of managed correctional facilities in Australia

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GEO GROUP INC 10-Q