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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
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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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- 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 + Details
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