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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Mutual fund and investment income, recognition period	3 months
Contract assets related to contingent income	$ 2.8	$ 2.9
Contract liabilities	1.9	1.6
Insurance
Disaggregation of Revenue [Line Items]
Contract assets	5.7	6.1
Wealth management services
Disaggregation of Revenue [Line Items]
Contract assets	$ 3.0	$ 2.5

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