Physical Commodities Inventory Physical Commodities Table (Tables)

6 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(in millions)	March 31, 2019		September 30, 2018
Physical Ag & Energy(1)	$	163.3	$	114.7
Precious metals - held by broker-dealer subsidiary(2)	39.6		42.1
Precious metals - held by non-broker-dealer subsidiaries(3)	76.9		65.7
Physical commodities inventory	$	279.8	$	222.5