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Goodwill (Notes)
 6 Months Ended
Mar. 31, 2017
Goodwill [Abstract]  
Goodwill Disclosure [Text Block]
Goodwill
The carrying value of goodwill is allocated to the Company’s operating segments as follows:
(in millions)
March 31,
2017
 
September 30,
2016
Commercial Hedging
$
30.7

 
$
30.7

Global Payments
6.3

 
6.3

Physical Commodities
2.4

 
2.4

Securities
8.1

 
8.1

Goodwill
$
47.5

 
$
47.5