Deferred compensation arrangement with individual balance.

No definition available.

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Namespace Prefix:	geo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Deferred compensation, interest rate on cash payment.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Deferred compensation, interest rate on employer contribution.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Minimum age to be eligible to receive lump sum payment upon benefit.

+ References

No definition available.

+ Details

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Namespace Prefix:	geo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of commitment made to pay deferred cash remuneration.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as noncurrent. Excludes other postretirement benefit plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480535/715-20-45-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480535/715-20-45-2

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

+ Details

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Period Type:	instant

- Details

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- Details

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Benefit Plans - Additional Information (Details) - USD ($) $ in Millions		6 Months Ended
	Jul. 01, 2021	Jun. 30, 2023	Dec. 31, 2022
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Age limit for a lump sum payment		55 years
Long-term portion of the pension liability		$ 26.0	$ 25.4
George C. Zoley \| Amended and Restated Executive Retirement Agreement
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Deferred compensation arrangement with individual, cash payment	$ 3.6
Deferred compensation, interest rate on cash payment	5.00%
Deferred compensation arrangement with individual, employer contribution	$ 1.0
Deferred compensation, interest rate on employer contribution	5.00%
Deferred compensation arrangement with individual balance		$ 7.8