Revenue from Contracts with Clients (Tables)

6 Months Ended

Mar. 31, 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.

	Three Months Ended March 31,				Six Months Ended March 31,
(in millions)	2021		2020		2021		2020
Revenues from contracts with clients:
Commission and clearing fees:
Sales-based:
Exchange-traded futures and options	$	49.4	$	40.1	$	95.7	$	72.5
OTC derivative brokerage	4.6		6.7		8.4		12.2
Equities and fixed income	19.4		7.1		33.8		11.4
Mutual funds	1.5		1.6		2.7		2.9
Insurance and annuity products	2.3		2.4		4.6		4.5
Other	0.1		0.5		0.3		0.8
Total sales-based commission	77.3		58.4		145.5		104.3
Trailing:
Mutual funds	3.6		3.5		6.9		6.6
Insurance and annuity products	4.2		4.0		8.1		7.7
Total trailing commission	7.8		7.5		15.0		14.3
Clearing fees	39.4		41.6		77.9		71.1
Trade conversion fees	3.6		4.2		5.7		5.7
Other	1.7		4.9		5.1		8.4
Total commission and clearing fees:	129.8		116.6		249.2		203.8
Consulting, management, and account fees:
Underwriting fees	0.2		0.2		0.4		0.4
Asset management fees	9.3		8.7		18.0		16.2
Advisory and consulting fees	6.6		5.7		12.6		11.3
Sweep program fees	0.8		3.6		1.6		7.6
Client account fees	3.8		3.1		7.9		6.1
Other	1.4		1.3		4.6		2.3
Total consulting, management, and account fees	22.1		22.6		45.1		43.9
Total revenues from contracts with clients	$	151.9	$	139.2	$	294.3	$	247.7
Method of revenue recognition:
Point-in-time	$	127.4	$	113.7	$	247.1	$	198.3
Time elapsed	24.5		25.5		47.2		49.4
Total revenues from contracts with clients	151.9		139.2		294.3		247.7
Other sources of revenues
Physical precious metals trading	10,295.7		19,694.7		18,704.6		30,352.7
Physical agricultural and energy product trading	508.6		322.2		983.2		642.2
Principal gains, net	265.2		168.5		468.6		281.0
Interest income	23.4		41.7		44.6		87.7
Total revenues	$	11,244.8	$	20,366.3	$	20,495.3	$	31,611.3
Primary geographic region:
United States	$	853.6	$	585.6	$	1,612.5	$	1,097.9
Europe	490.1		150.0		662.5		261.6
South America	14.5		16.3		29.1		31.5
Middle East and Asia	9,885.1		19,613.3		18,187.1		30,218.8
Other	1.5		1.1		4.1		1.5
Total revenues	$	11,244.8	$	20,366.3	$	20,495.3	$	31,611.3