Letters of credit outstanding relating to performance guarantees.

No definition available.

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- Definition

Maximum loan amount under SACS shareholder's loan.

+ References

No definition available.

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- Definition

Number of letters of guarantee outstanding under separate international facilities relating to performance guarantees.

+ References

No definition available.

+ Details

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- Definition

Potential estimated exposure of tax obligations.

+ References

No definition available.

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- Definition

Working capital line of credit.

+ References

No definition available.

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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.

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- Definition

Amounts due from an entity in which the reporting entity shares joint control with another party or group, due within 1 year (or 1 business cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Debt (Guarantees) (Details) £ in Millions, $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) guarantee	Dec. 31, 2018 AUD ($) guarantee	Dec. 31, 2018 CAD ($) guarantee	Dec. 31, 2018 ZAR (R) guarantee	Dec. 31, 2017 GBP (£)
Debt Instrument [Line Items]
Variable interest entity ownership percentage in joint venture	50.00%
GEO Amey
Debt Instrument [Line Items]
Lines of credit	$ 12,000,000
Ravenhall
Debt Instrument [Line Items]
Number of letters of guarantee outstanding under separate international facilities relating to performance guarantees \| guarantee		8	8	8	8
Letters of guarantee outstanding relating to performance guarantees		$ 11,500,000
SACS
Debt Instrument [Line Items]
Maximum loan amount under stand by facility to SACS		1,400,000.0			R 20,000,000
Line of credit facility, amount outstanding		$ 0
Canada Facility
Debt Instrument [Line Items]
Potential estimated exposure of tax obligations				$ 1.1
Revolver \| Letter of credit \| Ravenhall
Debt Instrument [Line Items]
Maximum exposure, undiscounted	70,600,000		$ 100
Other Noncurrent Assets \| GEO Amey
Debt Instrument [Line Items]
Due from joint venture, current	$ 1,700,000					£ 1.3