Revenue from Contracts with Clients (Tables)

12 Months Ended

Sep. 30, 2021

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,
	2021		2020		2019
Revenues from contracts with clients:
Commission and clearing fees:
Sales-based:
Exchange-traded futures and options	$	190.6	$	143.7	$	144.9
OTC derivative brokerage	15.9		19.7		32.1
Equities and fixed income	60.5		39.9		16.1
Mutual funds	5.5		5.2		7.5
Insurance and annuity products	9.7		8.4		7.3
Other	2.3		1.4		1.3
Total sales-based commission	284.5		218.3		209.2
Trailing:
Mutual funds	14.5		12.9		12.4
Insurance and annuity products	17.0		15.3		14.4
Total trailing commission	31.5		28.2		26.8
Clearing fees	150.9		139.0		118.8
Trade conversion fees	11.2		8.9		7.5
Other	9.1		9.2		10.1
Total commission and clearing fees	487.2		403.6		372.4
Consulting, management, and account fees:
Underwriting fees	0.6		0.6		0.7
Asset management fees	38.3		31.3		26.2
Advisory and consulting fees	24.9		22.2		20.0
Sweep program fees	3.0		9.5		16.3
Client account fees	15.8		12.3		10.6
Other	8.4		7.8		5.8
Total consulting, management, and account fees	91.0		83.7		79.6
Sales of physical commodities:
Precious metals retail sales	1,541.3		—		—
Total revenues from contracts with clients	$	2,119.5	$	487.3	$	452.0
Method of revenue recognition:
Point-in-time	$	2,021.8	$	396.1	$	362.7
Time elapsed	97.7		91.2		89.3
Total revenues from contracts with clients	2,119.5		487.3		452.0
Other sources of revenues
Physical precious metals trading	37,250.4		51,598.5		30,694.5
Physical agricultural and energy product trading	2,169.9		1,300.7		1,135.8
Principal gains, net	892.0		622.2		415.8
Interest income	102.4		130.9		198.9
Total revenues	$	42,534.2	$	54,139.6	$	32,897.0