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Retirement Plans - Schedule of Weighted Average Assets Allocation and Weighted Average Target Allocation (Details) - United Kingdom Subsidiary - UK Plan | Dec. 31, 2021 | Dec. 31, 2020
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Defined Benefit Plan Disclosure [Line Items] |  |
Target Asset Allocation | 100.00% | 100.00%
Asset Allocation | 100.00% | 100.00%
Debt |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Asset Allocation | 75.00% | 65.00%
Asset Allocation | 76.00% | 63.00%
Equity |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Asset Allocation | 0.00% | 15.00%
Asset Allocation | 0.00% | 12.70%
Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Asset Allocation | 15.00% | 10.00%
Asset Allocation | 16.50% | 17.10%
Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Asset Allocation | 10.00% | 10.00%
Asset Allocation | 7.50% | 7.20%

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- Definition Percentage of target 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/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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