Revenue from Contracts with Clients (Tables)

12 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table represents a disaggregation of the Company’s total revenues separated between revenues from contracts with clients and other sources of revenue for the periods indicated (in millions):

	Year Ended September 30,
	2022		2021		2020
Revenues from contracts with clients:
Commission and clearing fees:
Sales-based:
Exchange-traded futures and options	$	210.7	$	190.6	$	143.7
OTC derivative brokerage	16.8		15.9		19.7
Equities and fixed income	62.9		60.5		39.9
Mutual funds	4.1		5.5		5.2
Insurance and annuity products	9.3		9.7		8.4
Other	3.1		2.3		1.4
Total sales-based commission	306.9		284.5		218.3
Trailing:
Mutual funds	14.1		14.5		12.9
Insurance and annuity products	16.0		17.0		15.3
Total trailing commission	30.1		31.5		28.2
Clearing fees	153.2		150.9		139.0
Trade conversion fees	11.5		11.2		8.9
Other	6.2		9.1		9.2
Total commission and clearing fees	507.9		487.2		403.6
Consulting, management, and account fees:
Underwriting fees	0.5		0.6		0.6
Asset management fees	43.9		38.3		31.3
Advisory and consulting fees	30.9		24.9		22.2
Sweep program fees	13.1		3.0		9.5
Client account fees	16.0		15.8		12.3
Other	6.9		8.4		7.8
Total consulting, management, and account fees	111.3		91.0		83.7
Sales of physical commodities:
Precious metals retail sales	2,988.3		1,541.3		—
Total revenues from contracts with clients	$	3,607.5	$	2,119.5	$	487.3
Method of revenue recognition:
Point-in-time	$	3,489.5	$	2,021.8	$	396.1
Time elapsed	118.0		97.7		91.2
Total revenues from contracts with clients	3,607.5		2,119.5		487.3
Other sources of revenues
Physical precious metals trading	57,404.3		37,250.4		51,598.5
Physical agricultural and energy product trading	3,660.0		2,169.9		1,300.7
Principal gains, net	1,145.2		892.0		622.2
Interest income	219.0		102.4		130.9
Total revenues	$	66,036.0	$	42,534.2	$	54,139.6

Schedule of Income and Expense

The following table indicates the relevant income and expense:

	Year Ended September 30,
(in millions)	2022		2021		2020
Dividend income on long equity positions	$	142.3	$	282.7	$	77.0
Dividend expense on short equity positions	134.0		281.3		76.6
Dividend income net of dividend expense reported within Principal Gains, net	$	8.3	$	1.4	$	0.4