Regulatory Requirements and Subsidiary Dividend Restrictions (Notes)

12 Months Ended

Sep. 30, 2016

Capital and Other Regulatory Requirements [Abstract]

Regulatory Capital Requirements under Banking Regulations [Text Block]

Regulatory Requirements and Subsidiary Dividend Restrictions

The Company’s subsidiary INTL FCStone Financial is registered as a broker dealer and member of the Financial Industry Regulatory Authority (“FINRA”) subject to the SEC Uniform Net Capital Rule 15c3-1, which requires the maintenance of minimum net capital. INTL FCStone Financial is also a commodity futures commission merchant registered with the CFTC and subject to the net capital requirements of the CFTC Regulation 1.17. Under the more restrictive of these rules, INTL FCStone Financial is required to maintain “adjusted net capital”, equivalent to the greater of $1,000,000 or 8 percent of customer and noncustomer risk maintenance margin requirements on all positions, as defined in such rules, regulations, and requirements. Net capital and the related net capital requirement may fluctuate on a daily basis. INTL FCStone Financial also has restriction on dividends, which restricts the withdrawal of equity capital if the planned withdrawal would reduce net capital, subsequent to haircuts and charges, to an amount less than 120% of the greatest minimum requirement.

INTL FCStone Financial as a registered securities carrying broker dealer is also subject to Rule 15c3-3 of the Securities Exchange Act of 1934, which requires the Company to maintain separate accounts for the benefit of securities customers and proprietary accounts of broker dealers (“PABs”). These customer protection rules requires the Company to maintain special reserve bank accounts (“SRBAs”) for the exclusive benefit of securities customers and PABs.

Pursuant to the requirements of the Commodity Exchange Act, funds deposited by customers of INTL FCStone Financial relating to their trading of futures and options on futures on a U.S. commodities exchange must be carried in separate accounts which are designated as segregated customers’ accounts. Pursuant to the requirements of the CFTC, funds deposited by customers of INTL FCStone Financial relating to their trading of futures and options on futures traded on, or subject to the rules of, a foreign board of trade must be carried in separate accounts in an amount sufficient to satisfy all of INTL FCStone Financial’s current obligations to customers trading foreign futures and foreign options on foreign commodity exchanges or boards of trade, which are designated as secured customers’ accounts. See below for additional information regarding INTL FCStone Financial’s calculation of segregated and secured customer funds.

The Company’s subsidiaries INTL Custody & Clearing Solutions Inc. (formerly Sterne Agee Clearing, Inc.) and SA Stone Wealth Management Inc. (formerly Sterne Agee Financial Services, Inc.) are subject to the SEC Uniform Net Capital Rule 15c3-1 under the Securities Exchange Act of 1934.

The Company’s subsidiary INTL FCStone Ltd is regulated by the Financial Conduct Authority (“FCA”), the regulator of the financial services industry in the United Kingdom, as a Financial Services Firm under part IV of the Financial Services and Markets Act 2000. The regulations impose regulatory capital, as well as conduct of business, governance, and other requirements. The conduct of business rules include those that govern the treatment of customer money and other assets which under certain circumstances for certain classes of customer must be segregated from the firm’s own assets.

The Company’s subsidiary INTL FCStone Pty Ltd is regulated by the Australian Securities and Investment Commission and is subject to a net tangible asset capital requirement.

FCStone Commodity Services (Europe), Ltd. is domiciled in Ireland and subject to regulation by the Central Bank of Ireland, and is subject to a net capital requirement.

INTL FCStone DTVM Ltda. (“INTL FCStone DTVM”) is a registered broker-dealer and regulated by the Brazilian Central Bank and Securities and Exchange Commission of Brazil, and is subject to a capital adequacy requirement.

All subsidiaries of the Company are in compliance with all of their regulatory requirements as of September 30, 2017, as follows:

(in millions)			As of September 30, 2017
Subsidiary	Regulatory Authority	Requirement Type	Actual		Minimum Requirement
INTL FCStone Financial Inc.	SEC and CFTC	Net capital	$	157.1	$	74.0
INTL FCStone Financial Inc.	CFTC	Segregated funds	$	2,248.0	$	2,195.7
INTL FCStone Financial Inc.	CFTC	Secured funds	$	165.1	$	148.7
INTL FCStone Financial Inc.	SEC	Customer reserve	$	7.2	$	—
INTL FCStone Financial Inc.	SEC	PAB reserve	$	13.5	$	0.2
INTL Custody & Clearing Solutions Inc.	SEC	Net capital	$	1.5	$	0.1
SA Stone Wealth Management Inc.	SEC	Net capital	$	4.9	$	0.3
INTL FCStone Ltd	FCA (United Kingdom)	Net capital	$	158.7	$	88.3
INTL FCStone Ltd	FCA (United Kingdom)	Segregated funds	$	107.1	$	106.6
INTL Netherlands BV	FCA (United Kingdom)	Net capital	$	158.0	$	88.3
INTL FCStone DTVM Ltda.	Brazilian Central Bank and Securities and Exchange Commission of Brazil	Capital adequacy	$	13.0	$	0.5
INTL Gainvest S.A.	National Securities Commission ("CNV")	Capital adequacy	$	5.1	$	0.2
INTL Gainvest S.A.	CNV	Net capital	$	0.4	$	0.1
INTL CIBSA S.A.	CNV	Capital adequacy	$	7.6	$	0.9
INTL CIBSA S.A.	CNV	Net capital	$	1.4	$	0.5

Certain other non-U.S. subsidiaries of the Company are also subject to capital adequacy requirements promulgated by authorities of the countries in which they operate. As of September 30, 2017, these subsidiaries were in compliance with their local capital adequacy requirements.