Goodwill (Tables)

6 Months Ended

Mar. 31, 2020

Goodwill [Abstract]

Schedule of Goodwill [Table Text Block]

The carrying value of goodwill is allocated to the Company’s operating segments as follows:

(in millions)	March 31, 2020		September 30, 2019
Commercial Hedging	$	30.2	$	30.3
Global Payments	7.6		7.6
Securities	4.6		4.6
Physical Commodities	8.7		8.7
Clearing and Execution	1.1		—
Goodwill	$	52.2	$	51.2