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Acquisitions and Dispositions of Businesses - Completed Acquisitions (Details) - acquisition | 3 Months Ended | 9 Months Ended |  |  |  |
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Aug. 30, 2023 | Jun. 22, 2023 | Nov. 01, 2022 | May 03, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Number of business acquired under business combination | 1 | 2 | 2 | 4 |  |  |  |
N. Goddard Seguros |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Percentage of capital acquired |  |  |  |  | 100.00% |  |  |
2023 Acquisitions |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Percentage of capital acquired |  |  |  |  |  | 100.00% |  |
E.R.N. Evaluacion de Riesgos Naturales y Antropogenicos, S.A. de C.V |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Percentage of capital acquired |  |  |  |  |  |  | 100.00% |
Karl Köllner Group |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Percentage of capital acquired |  |  |  |  |  |  |  | 100.00%

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-5 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
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