Current Expected Credit Losses (CECL) (Tables)

12 Months Ended

Dec. 31, 2024

Credit Loss [Abstract]

Schedule of Changes in CECL Allowance Reserve

During the years ended December 31, 2024, 2023 and 2022, the Company recorded changes in the allowance for credit losses as follows (in millions):

	Accrued commissions and other receivables, net		Loans, forgivable loans and other receivables from employees and partners, net		Receivables from broker-dealers, clearing organizations, customers and related broker-dealers		Total
Beginning Balance, January 1, 2022	$	0.7	$	1.7	$	—	$	2.4
Current-period provision for expected credit losses	4.7		0.8		7.0		12.5
Ending Balance, December 31, 2022	5.4		2.5		7.0		14.9
Current-period provision for expected credit losses	(0.4)		(0.2)		11.9		11.3
Ending Balance, December 31, 2023	5.0		2.3		18.9		26.2
Current-period provision for expected credit losses	1.2		—		2.1		3.3
Release of allowance for expected credit losses	—		(2.3)		—		(2.3)
Ending Balance, December 31, 2024	$	6.2	$	—	$	21.0	$	27.2