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Employee Benefits - Expected Rate of Return and Actual Plan Asset Allocation (Details) - ICON Development Solutions Limited pension plan	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	100.00%	100.00%
Government Bonds
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	88.00%	0.00%
Diversified Bonds
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	12.00%	0.00%
Corporate Bonds (including 50% high yield bonds)
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	0.00%	37.00%
Equities
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	0.00%	24.00%
Secured Loans and Multi Asset Credit
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	0.00%	39.00%

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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.

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- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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