Capital and Other Regulatory Requirements Capital and Other Regulatory Requirements (Tables)

3 Months Ended

Dec. 31, 2012

Capital and Other Regulatory Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

(in millions)			As of December 31, 2012
Subsidiary	Regulatory Authority	Requirement Type	Actual		Minimum Requirement
FCStone, LLC	CFTC	Net capital	$	98.7	$	68.6
FCStone, LLC	CFTC	Segregated funds	$	1,574.7	$	1,550.6
FCStone, LLC	CFTC	Secured funds	$	74.1	$	62.5
INTL FCStone (Europe)	FSA	Net capital	$	43.0	$	21.4
INTL FCStone (Europe)	FSA	Segregated funds	$	90.6	$	88.5
INTL Global Currencies Limited	FSA	Net capital	$	19.4	$	0.5
TRX Futures Limited	FSA	Capital adequacy	$	8.2	$	3.0
INTL FCStone Securities Inc.	SEC	Net capital	$	2.0	$	1.0
FCC Investments, Inc.	SEC	Net capital	$	0.4	$	0.3
FCStone Australia	Australian Securities and Investment Commission	Net capital	$	2.0	$	1.0
FCStone Australia	New Zealand Clearing Ltd	Capital adequacy	$	11.5	$	0.8
FCStone Europe	Central Bank of Ireland	Net capital	$	2.0	$	0.5
INTL FCStone DTVM Ltda.	Brazilian Central Bank and Securities and Exchange Commission of Brazil	Capital adequacy	$	0.9	$	0.7