Acquisitions and Dispositions of Businesses - Schedule of Acquisitions (Details) - acquisition	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Business Combination [Line Items]
Completed acquisitions	3	2	8	9
Risk Capital
Business Combination [Line Items]
Completed acquisitions	1	1	6	7
Human Capital
Business Combination [Line Items]
Completed acquisitions	2	1	2	2

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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