Commodity and Other Repurchase Agreements Gross Obligations Collateral Types (Tables)

12 Months Ended

Sep. 30, 2018

Financial Instruments Owned and Pledged as Collateral [Line Items]

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

Securities sold under agreements to repurchase:	September 30, 2018		September 30, 2017
U.S. Treasury obligations	$	39.6	$	7.0
U.S. government agency obligations	461.7		332.6
Asset-backed obligations	50.0		36.4
Agency mortgage-backed obligations	1,385.4		1,017.1
Total securities sold under agreements to repurchase	$	1,936.7	$	1,393.1
Securities loaned:
Equity securities	277.9		111.1
Total securities loaned	277.9		111.1
Gross amount of secured financing	$	2,214.6	$	1,504.2