Current Expected Credit Losses (Tables)

12 Months Ended

Dec. 31, 2023

Credit Loss [Abstract]

Financing Receivable, Allowance for Credit Loss

During the years ended December 31, 2023, 2022 and 2021, the Company recorded changes in the CECL reserve 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, 2021	$	1.0	$	1.6	$	—	$	2.6
Current-period provision for expected credit losses	(0.3)		0.1		—		(0.2)
Ending balance, December 31, 2021	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