Physical Commodities Inventory Physical Commodities Table (Tables)

6 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(in millions)	March 31, 2020		September 30, 2019
Physical Ag & Energy(1)	$	167.8	$	144.8
Precious metals - held by broker-dealer subsidiary(2)	26.3		7.1
Precious metals - held by non-broker-dealer subsidiaries(3)	61.1		77.4
Physical commodities inventory	$	255.2	$	229.3