75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Statements of Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Statement of Changes in Net Assets Available For Benefits link:presentationLink link:calculationLink link:definitionLink 75030 - Disclosure - Plan Description link:presentationLink link:calculationLink link:definitionLink 75040 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 75050 - Disclosure - Fair Value of Investments link:presentationLink link:calculationLink link:definitionLink 75060 - Disclosure - Separate Account Guaranteed Interest Contract link:presentationLink link:calculationLink link:definitionLink 75070 - Disclosure - Plan Termination link:presentationLink link:calculationLink link:definitionLink 75080 - Disclosure - Income Tax Status link:presentationLink link:calculationLink link:definitionLink 75090 - Disclosure - Administrative Expenses link:presentationLink link:calculationLink link:definitionLink 75100 - Disclosure - Related Party and Party-In-Interest Transactions link:presentationLink link:calculationLink link:definitionLink 75110 - Disclosure - Risks and Uncertainties link:presentationLink link:calculationLink link:definitionLink 75120 - Disclosure - Schedule of Assets (Held at End of Year) link:presentationLink link:calculationLink link:definitionLink 75130 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 75140 - Disclosure - Plan Description (Tables) link:presentationLink link:calculationLink link:definitionLink 75150 - Disclosure - Fair Value of Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 75160 - Disclosure - Schedule of Delinquent Participant Contributions (Tables) link:presentationLink link:calculationLink link:definitionLink 75170 - Disclosure - Plan Description - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75180 - Disclosure - Plan Description - Schedule of Vesting Service (Details) link:presentationLink link:calculationLink link:definitionLink 75190 - Disclosure - Fair Value of Investments- Summary of Plan"s Investments carried at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 75200 - Disclosure - Separate Account Guaranteed Interest Contract - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75210 - Disclosure - Plan Termination - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75220 - Disclosure - Income Tax Status - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75230 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 75230 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) [Default] link:presentationLink link:calculationLink link:definitionLink 999009 - Disclosure - Anchoring link:presentationLink link:calculationLink link:definitionLink EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Employee benefit plan, note receivable from participant, account, maximum borrowing, to total account, percentage EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Employee benefit plan, forfeited amount, used for payment of employer matching contributions and administrative expenses EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Subsequent Event [Policy Text Block] Subsequent Events EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses paid on behalf of the plan Administrative expenses EBP, Net Asset Available for Benefit Net assets available for benefits from the financial statements Net assets available for benefits, end of year Net assets available for benefits, beginning of year Net assets available for benefits Minimum [Member] Minimum EBP, Employer Contribution, Matching Percentage Fixed matching contribution percentage EBP, Schedule of Asset Held for Investment [Table] EBP, Tax Status [Line Items] EBP, Payment to Participant [Policy Text Block] Payments of Benefits EBP, Expense [Policy Text Block] Administrative Expenses EBP, Risk and Uncertainty [Policy Text Block] Risks and Uncertainties Employee benefit plan, notes receivable from participants loan to purchase primary residence term. Employee Benefit Plan, Notes Receivable from Participants Loan to Purchase Primary Residence Term Employee benefit plan, notes receivable from participants loan to purchase primary residence term EBP, Description of Plan and Accounting Change [Abstract] Employee benefit plan, notes receivable from participants loan term. Employee Benefit Plan, Notes Receivable from Participants Loan Term Employee benefit plan, notes receivable from participants loan term Employee benefit plan participant contribution vesting description. Employee Benefit Plan Participant Contribution Vesting Description Employee benefit plan contribution vesting description EBP, Fully Benefit-Responsive Investment Contract [Table] Employee benefit plan, vested interest Employee Benefit Plan Vesting Percentage Employee benefit plan vesting percentage. Document Period End Date Document Information [Table] Employee Benefit Plan, Notes Receivable From Participants, Loans Repayable Through Payroll Deductions Period Employee benefit plan, notes receivable from participants, loans repayable through payroll deductions period. Employee benefit plan, notes receivable from participants, loans repayable through payroll deductions period Employee benefit plan, participant contribution, aftertax, minimum annual compensation to compensation, percentage. Employee Benefit Plan, Participant Contribution, Aftertax, Minimum Annual Compensation to Compensation, Percentage Employee benefit plan, participant contribution, after tax, minimum annual compensation to total compensation, percentage Investments [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Note Receivable from Participant Notes receivable from participants EBP, Fully Benefit-Responsive Investment Contract [Text Block] Separate Account Guaranteed Interest Contract Employee Benefit Plan, Vesting Service Period Employee benefit plan, vesting service period Employee benefit plan, vesting service period EBP, Tax Status [Text Block] Federal Income Tax Status Income Tax Status EBP 005. EBP 005 [Member] EBP 005 EBP, Use of Estimate [Policy Text Block] Use of Estimates Employee Benefit Plan, Participants Vested Accounts, Number Of Outstanding Loan employee benefit plan, participants vested accounts, number of outstanding loan. Employee benefit plan, participants vested accounts, number of outstanding loan Employee benefit plan number of service in vesting of employer contribution period. Employee Benefit Plan Number of Service in Vesting of Employer Contribution Period Employee benefit plan, years of vesting service EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash, Total Company EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment income: EBP, Accounting Policy [Table] EBP, Investment [Policy Text Block] Investment Valuation and Income Recognition Administrative Expenses Employee Benefit Plan, Administrative Expenses [Text Block] Employee benefit plan, administrative expenses. Common Collective Trust [Member] Collective Trust Fund EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest on notes receivable from participants Statistical Measurement [Axis] EBP, Employer Contribution, Participant Compensation Matched, Percentage Percentage on employee eligible compensation EBP, Basis of Accounting [Policy Text Block] Basis of Accounting Fair Value, Inputs, Level 3 [Member] Significant Unobservable Inputs (Level 3) Employee Benefit Plan, Notes Receivable From Participants, Interest Rate On Loans Outstanding, Prime Rate Employee benefit plan, notes receivable from participants, interest rate on loans outstanding, prime rate. Employee benefit plan, notes receivable from participants, interest rate on loans outstanding, prime rate EBP, Investment, Fair Value and NAV [Table Text Block] Summary of Plan"s Investments carried at Fair Value on Recurring Basis EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Notes receivable from participants EBP, Fully Benefit-Responsive Investment Contract, Limitation on Transacting at Contract Value, Description EBP, fully benefit-responsive investment contract, limitation on transacting at contract value, description EBP, Change in Net Asset Available for Benefit, Increase Total additions EBP, fully benefit-responsive investment contract, description EBP, Fully Benefit-Responsive Investment Contract, Description Fair Value Hierarchy and NAV [Axis] EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Deductions EBP, Description of Plan [Line Items] Employee Benefit Plan, Discretionary Non Elective Contributions Amount Employee benefit plan, discretionary non elective contributions amount. Employee benefit plan, discretionary non elective contributions, amount EBP, Risk and Uncertainty [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Contribution Total contributions Document Fiscal Period Focus EBP, Participant Contribution, Automatic, Deferral Rate Employee benefit plan participant contribution, automatic, deferral rate EBP, Schedule of Asset Held for Investment [Abstract] EBP, Change in Net Asset Available for Benefit, Decrease Total deductions EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Employee benefit plan, notes receivable from participant, account, maximum borrowing, amount Fair Value, Inputs, Level 1 [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Investment Type [Axis] Three Or More Years of Service [Member] Three Or More Years of Service. 3 or more EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Risk and Uncertainty [Text Block] Risks and Uncertainties Statistical Measurement [Domain] EBP, Fully Benefit-Responsive Investment Contract [Line Items] Entity Central Index Key Employee benefit plan, participant contribution, aftertax, maximum annual compensation to compensation, percentage. Employee Benefit Plan, Participant Contribution, Aftertax, Maximum Annual Compensation to Compensation, Percentage Employee benefit plan, participant contribution, after tax, maximum annual compensation to total compensation, percentage EBP, Asset Held for Investment, Participant Loan, Interest Rate Employee benefit plan, asset held for investment, participant loan, interest rate EBP, Summary of Accounting Policy [Text Block] Summary of Significant Accounting Policies Current Fiscal Year End Date EBP, Plan Termination [Text Block] Plan Termination EBP, Schedule of Delinquent Participant Contribution [Table Text Block] Schedule of Delinquent Participant Contributions Fair Value, Inputs, Level 2 [Member] Significant Observable Inputs (Level 2) Employee benefit plan note receivable from participant interest rate. Employee Benefit Plan Note Receivable From Participant Interest Rate Employee benefit plan note receivable from participant interest rate Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Level 1, Level 2 and Level 3 Employee benefit plan, contribution limitations percentage. Employee Benefit Plan, Contribution Limitations Percentage Employee benefit plan contribution limitations percentage EBP, Statement of Net Asset Available for Benefit [Table] EBP, Accounting Policy [Line Items] EBP, Investment, Fair Value and NAV [Abstract] EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Investments at contract value EBP, Schedule of Delinquent Participant Contribution [Abstract] Fair Value Hierarchy and NAV [Domain] EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment, Total Dividends and interest Interest and dividends Employee benefit plan vested percentage. Employee Benefit Plan Vested Percentage Vest percentage Employee benefit plan, minimum amount per non-hardship in-service withdrawal. Employee Benefit Plan, Minimum Amount Per Non Hardship in Service Withdrawal Employee benefit plan, minimum amount per non-hardship in-service withdrawal EBP, Related Party and Party-in-Interest Transactions [Text Block] Related Party and Party-In-Interest Transactions EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Net increase in net assets available for benefits Net increase in net assets available for benefits EBP, Asset [Abstract] Assets Total investments EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value Document Type EBP, Description of Plan [Table] EBP, Contribution [Policy Text Block] Contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Participant EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment, Total EBP, Asset Held for Investment, Plan Interest in Master Trust, Current Value Current Value EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] Entity Registrant Name EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Description of Plan [Text Block] Plan Description Employee benefit plan note receivable from participant prime rate. Employee Benefit Plan Note Receivable From Participant Prime Rate Employee benefit plan, note receivable from participant prime rate EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Plan Name EBP, Risk and Uncertainty [Line Items] EBP, Tax Determination Letter, Date Tax determination letter, date EBP, Plan Number EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Plan interest in BNSF 401(k) Plans Master Trust investment income (Note 4) Net investment income EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Ending Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Beginning Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Total Investments at fair value Total investments, at fair value EBP, Tax Status [Abstract] Mutual Funds Mutual Fund [Member] EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Benefits paid to participants Salaried Employees and Non-union Hourly Employees. Salaried Employees and Non-union Hourly Employees [Member] Salaried Employees and Non-union Hourly Employees EBP, Statement of Net Asset Available for Benefit [Line Items] Employee benefit plan, participant contribution, pretax, maximum of eligible compensation percentage. Employee Benefit Plan, Participant Contribution, Pretax, Maximum of Eligible Compensation, Percentage Employee benefit plan, participant contribution, pretax, maximum of eligible compensation percentage EBP, Forfeited Nonvested Account Employee benefit plan, forfeited non-vested amounts Entity Tax Identification Number EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Employee benefit plan, notes receivable from participant, account, minimum borrowing, amount EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants Entity [Domain] Employee benefit plan, minimum participants with vested balances. Employee Benefit Plan, Minimum Participants With Vested Balances Employee benefit plan, minimum participants with vested balances Union Hourly Employees Union Hourly Employees [Member] Union Hourly Employees EBP, Schedule of Delinquent Participant Contribution [Line Items] EBP, Schedule of Asset Held for Investment [Table Text Block] Schedule of Assets (Held at End of Year) EBP 001 [Member] EBP 001. EBP 001 EBP, Related Party and Party-in-Interest Transactions [Line Items] Employee benefit plan, participant contribution in pre-tax and roth contributions percentage. Employee Benefit Plan, Participant Contribution in Pretax and Roth Contributions Percentage Employee benefit plan, participant contribution in pre-tax and roth contributions percentage Maximum [Member] Maximum Employee Benefit Plan Service Years Employee benefit plan service years. Employee benefit plan, vesting service Employee benefit plan, employer contribution, variable matching percentage. Employee Benefit Plan, Employer Contribution, Variable Matching Percentage Variable matching contribution percentage EBP, Investment, Fair Value and NAV [Text Block] Fair Value of Investments Document Fiscal Year Focus EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Employee benefit plan, participant contribution, pre-tax, maximum annual compensation to total compensation, percentage EBP, Employer, Common Stock Fund [Member] Common Stock The GEO Group, Inc. Common Stock Fund EBP, Change in Net Asset Available for Benefit, Increase [Abstract] Additions EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Fully Benefit-Responsive Investment Contract, Termination, Description EBP, fully benefit-responsive investment contract, termination, description Amendment Flag Less than 3 Less Than Three Year Service [Member] Less Than Three Year Service. Employee benefit plan, participant contribution, pretax, minimum annual compensation to compensation, percentage. Employee Benefit Plan, Participant Contribution, Pretax, Minimum Annual Compensation to Compensation, Percentage Employee Benefit Plan Participant Contribution Pre taxMinimumAnnualCompensationToTotalCompensationPercentage Employee benefit plan, participant contribution, pre tax, minimum annual compensation to total compensation, percentage EBP, Tax Determination Letter, Obtained [true false] Tax determination letter, obtained EBP, Tax Status [Table] Fair Value Measured at Net Asset Value Per Share [Member] Fair Value Measured at Net Asset Value Employee Benefit Plan, Notes Receivable From Participants, Principal Residence Loans Repayment Period Employee benefit plan, notes receivable from participants, principal residence loans repayment period. Employee benefit plan, notes receivable from participants, principal residence loans repayment period Investment, Identifier [Axis] EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Rollover EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Legal Entity [Axis] Summary of Vesting Service [Table Text Block] Summary of Vesting Service. Schedule of Vesting Service Employee Benefit Plan Percentage of Vesting upon Termination Employee benefit plan percentage of vesting upon termination. Employee benefit plan, percentage of vesting upon termination Employee benefit plan participant loan maturity year. Employee Benefit Plan Participant Loan Maturity Year Employee benefit plan, participant loan maturity year EBP, Nonparticipant-Directed Investment [Line Items] Employee benefit plan, employer contribution, additional variable matching percentage. Employee Benefit Plan, Employer Contribution, Additional Variable Matching Percentage Additional variable matching contribution percentage EBP, Asset Held for Investment, Party-in-Interest [true false] Cover [Abstract] EBP, Asset Held for Investment Total EBP, Contribution, Participating Employer [Domain] EBP, Nonparticipant-Directed Investment [Abstract] EBP, Investment, Fair Value and NAV [Table] EBP, Nonparticipant-Directed Investment [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Contribution, Participating Employer [Axis] EBP, Risk and Uncertainty [Table] Employee benefit plan employer contribution variable matching, amount. Employee Benefit Plan Employer Contribution Variable Matching, Amount Employee benefit plan employer contribution variable matching amount EBP, Investment, Fair Value and NAV [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Table] Document Information [Line Items] Fidelity U.S. Bond Index Fund. Fidelity Freedom Index 2030 Fund. Fidelity 500 Index Fund. Great Gray Trust Company. Fidelity Freedom Index 2055 Fund [Member] Fidelity Freedom Index 2040 Fund. Fidelity Freedom Index 2030 Fund [Member] MFS Investment Management. Vanguard Small Cap Index Fund. Fidelity Freedom Index Retirement Fund [Member] Fidelity Freedom Index 2010 Fund [Member] Fidelity Mid Cap Index Fund [Member] Metropolitan West [Member] Fidelity Freedom Index 2015 Fund [Member] Fidelity Freedom Index 2015 Fund. VanguardTreasury Money Market Funds. Mass Mutual Retirement Services. John Hancock Disciplined Value Mid Cap Fund. PIMCO [Member] Fidelity International Index Fund [Member] Fidelity 500 Index Fund [Member] Mass Mutual Retirement Services [Member] Vanguard Small Cap Index Fund [Member] The GEO Group Inc. Fidelity Freedom Index 2035 Fund [Member] Fidelity Freedom Index 2055 Fund. Fidelity Freedom Index 2045 Fund VanguardTreasury Money Market Funds [Member] Fidelity Freedom Index 2010 Fund. American Century [Member] Fidelity Freedom Index 2035 Fund. Fidelity Freedom Index 2065 Fund. Fidelity Freedom Index 2025 Fund [Member] Fidelity Freedom Index 2060 Fund [Member] Fidelity Mid Cap Index Fund. American Century. Fidelity Freedom Index Retirement Fund. John Hancock Disciplined Value Mid Cap Fund [Member] Fidelity Freedom Index 2050 Fund. John Hancock Bond Fund [Member] Fidelity Freedom Index 2060 Fund. John Hancock Bond Fund. The GEO Group Inc [Member] PIMCO. Fidelity Freedom Index 2025 Fund. Fidelity Freedom Index 2045 Fund [Member] Great Gray Trust Company [Member] Fidelity Freedom Index 2065 Fund [Member] Fidelity International Index Fund. Fidelity Freedom Index 2020 Fund [Member] Fidelity Freedom Index 2050 Fund [Member] MFS Investment Management [Member] Metropolitan West. Fidelity Freedom Index 2040 Fund [Member] Fidelity U S Bond Index Fund [Member] Fidelity Freedom Index 2020 Fund.