CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUES
Commissions and fees	$ 4,199.4	$ 3,563.2	$ 3,047.5
Investment income	52.4	6.5	1.1
Other income, net	5.3	3.7	2.8
Total revenues	4,257.1	3,573.4	3,051.4
EXPENSES
Employee compensation and benefits	2,186.6	1,816.9	1,636.9
Other operating expenses	649.9	596.8	403.0
(Gain)/loss on disposal	(143.3)	(4.5)	(9.6)
Amortization	166.0	146.6	119.6
Depreciation	40.0	39.2	33.3
Interest	190.0	141.2	65.0
Change in estimated acquisition earn-out payables	21.8	(38.9)	40.4
Total expenses	3,111.0	2,697.3	2,288.6
Income before income taxes	1,146.1	876.1	762.8
Income taxes	275.6	204.3	175.7
Net income	$ 870.5	$ 671.8	$ 587.1
Net income per share:
Basic	$ 3.07	$ 2.38	$ 2.08
Diluted	3.05	2.37	2.07
Dividends declared per share	$ 0.48	$ 0.42	$ 0.38