Assets and Liabilities, at Fair Value (Tables)

12 Months Ended

Sep. 30, 2013

Assets and Liabilities, at Fair Value [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]



	September 30, 2013
(in millions)	Level 1		Level 2		Level 3		Netting and Collateral (1)			Total
Assets:
Money market funds	$	0.1	$	—	$	—	$	—		$	0.1
Certificate of deposits	2.9		—		—		—			2.9
Unrestricted cash equivalents	3.0		—		—		—			3.0
Money market funds	75.0		—		—		—			75.0
Commodities warehouse receipts	13.1		—		—		—			13.1
U.S. government obligations	—		19.5		—		—			19.5
Securities and other assets segregated under federal and other regulations	88.1		19.5		—		—			107.6
Money market funds	841.4		—		—		—			841.4
U.S. government obligations	—		594.8		—		—			594.8
Mortgage-backed securities	—		5.3		—		—			5.3
Derivatives	2,263.2		—		—		(2,333.0		)	(69.8		)
Deposits and receivables from exchange-clearing organizations	3,104.6		600.1		—		(2,333.0		)	1,371.7
U.S. government obligations	—		—		—		—			—
Derivatives	1.8		0.2		—		(15.1		)	(13.1		)
Deposits and receivables from broker-dealers, clearing organizations and counterparties - derivatives	1.8		0.2		—		(15.1		)	(13.1		)
Common and preferred stock and American Depositary Receipts (“ADRs”)	49.3		19.8		0.7		—			69.8
Exchangeable foreign ordinary equities and ADRs	36.7		—		—		—			36.7
Corporate and municipal bonds	0.1		—		3.5		—			3.6
U.S. government obligations	—		0.3		—		—			0.3
Foreign government obligations	7.7		—		—		—			7.7
Derivatives	173.6		440.6		—		(592.3		)	21.9
Commodities leases	—		56.1		—		(50.0		)	6.1
Commodities warehouse receipts	4.0		—		—		—			4.0
Exchange firm common stock	4.4		—		—		—			4.4
Mutual funds and other	4.0		—		—		—			4.0
Financial instruments owned	279.8		516.8		4.2		(642.3		)	158.5
Total assets at fair value	$	3,477.3	$	1,136.6	$	4.2	$	(2,990.4	)	$	1,627.7
Liabilities:
Accounts payable and other accrued liabilities - contingent liabilities	$	—	$	—	$	9.6	$	—		$	9.6
Payable to customers - derivatives	2,328.2		—		—		(2,328.2		)	—
Common and preferred stock and ADRs	82.9		16.6		—		—			99.5
Exchangeable foreign ordinary equities and ADRs	8.7		—		—		—			8.7
Derivatives	174.0		473.2		—		(616.5		)	30.7
Commodities leases	—		85.5		—		(44.5		)	41.0
Financial instruments sold, not yet purchased	265.6		575.3		—		(661.0		)	179.9
Total liabilities at fair value	$	2,593.8	$	575.3	$	9.6	$	(2,989.2	)	$	189.5


(1)	Represents cash collateral and the impact of netting across the levels of the fair value hierarchy. Netting among positions classified within the same level are included in that level.



	September 30, 2012
(in millions)	Level 1		Level 2		Level 3		Netting and Collateral (1)			Total
Assets:
Money market funds	$	0.1	$	—	$	—	$	—		$	0.1
Certificate of deposits	10.4		—		—		—			10.4
Unrestricted cash equivalents	10.5		—		—		—			10.5
Commodities warehouse receipts	22.3		—		—		—			22.3
U.S. government obligations	—		50.5		—		—			50.5
Securities and other assets segregated under federal and other regulations	22.3		50.5		—		—			72.8
Money market funds	335.1		—		—		—			335.1
U.S. government obligations	—		1,318.3		—		—			1,318.3
Mortgage-backed securities	—		7.0		—		—			7.0
Derivatives	3,344.3		—		—		(3,494.7		)	(150.4		)
Deposits and receivables from exchange-clearing organizations	3,679.4		1,325.3		—		(3,494.7		)	1,510.0
Derivatives	0.7		5.0		—		(6.4		)	(0.7		)
Deposits and receivables from broker-dealers, clearing organizations and counterparties - derivatives	0.7		5.0		—		(6.4		)	(0.7		)
Common and preferred stock and American Depositary Receipts (“ADRs”)	17.8		5.6		0.9		—			24.3
Exchangeable foreign ordinary equities and ADRs	10.0		—		—		—			10.0
Corporate and municipal bonds	0.3		0.6		3.6		—			4.5
U.S. government obligations	—		0.3		—		—			0.3
Foreign government obligations	14.8		—		—		—			14.8
Derivatives	315.6		785.3		—		(1,047.0		)	53.9
Commodities leases	—		135.2		—		(93.1		)	42.1
Commodities warehouse receipts	7.5		—		—		—			7.5
Exchange firm common stock	3.4		9.0		—		—			12.4
Mutual funds and other	1.9		—		—		—			1.9
Financial instruments owned	371.3		936.0		4.5		(1,140.1		)	171.7
Total assets at fair value	$	4,084.2	$	2,316.8	$	4.5	$	(4,641.2	)	$	1,764.3
Liabilities:
Accounts payable and other accrued liabilities - contingent liabilities	$	—	$	—	$	14.8	$	—		$	14.8
Payable to customers - derivatives	3,562.3		—		—		(3,562.3		)	—
Common and preferred stock and ADRs	16.4		5.9		—		—			22.3
Exchangeable foreign ordinary equities and ADRs	5.7		—		—		—			5.7
Derivatives	338.1		775.2		—		(1,068.7		)	44.6
Commodities leases	—		220.0		—		(117.2		)	102.8
Financial instruments sold, not yet purchased	360.2		1,001.1		—		(1,185.9		)	175.4
Total liabilities at fair value	$	3,922.5	$	1,001.1	$	14.8	$	(4,748.2	)	$	190.2


(1)	Represents cash collateral and the impact of netting across the levels of the fair value hierarchy. Netting among positions classified within the same level are included in that level.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The Company’s financial assets at fair value classified within level 3 of the fair value hierarchy as of September 30, 2013 and 2012 are summarized below:



(in millions)	September 30, 2013			September 30, 2012
Total level 3 assets	$	4.2		$	4.5
Level 3 assets for which the Company bears economic exposure	$	4.2		$	4.5
Total assets	$	2,848.0		$	2,953.0
Total financial assets at fair value	$	1,627.7		$	1,764.3
Total level 3 assets as a percentage of total assets	0.1		%	0.2		%
Level 3 assets for which the Company bears economic exposure as a percentage of total assets	0.1		%	0.2		%
Total level 3 assets as a percentage of total financial assets at fair value	0.3		%	0.3		%

The following tables set forth a summary of changes in the fair value of the Company’s level 3 financial assets and liabilities during the fiscal years ended September 30, 2013 and 2012, including a summary of unrealized gains (losses) during the fiscal year ended on the Company’s level 3 financial assets and liabilities still held as of September 30, 2013.



	Level 3 Financial Assets and Financial Liabilities For the Year Ended September 30, 2013
(in millions)	Balances at beginning of period		Realized gains (losses) during period		Unrealized gains (losses) during period			Purchases/ issuances		Settlements			Transfers in or (out) of Level 3		Balances at end of period
Assets:
Common and preferred stock and ADRs	$	0.9	$	—	$	(0.2	)	$	—	$	—		$	—	$	0.7
Corporate and municipal bonds	3.6		—		(0.1		)	—		—			—		3.5
	$	4.5	$	—	$	(0.3	)	$	—	$	—		$	—	$	4.2
Liabilities:
Contingent liabilities	$	14.8	$	—	$	2.6		$	5.6	$	(13.4	)	$	—	$	9.6



	Level 3 Financial Assets and Financial Liabilities For the Year Ended September 30, 2012
(in millions)	Balances at beginning of period		Realized gains (losses) during period			Unrealized gains (losses) during period			Purchases/ issuances		Settlements			Transfers in or (out) of Level 3		Balances at end of period
Assets:
Common and preferred stock and ADRs	$	1.1	$	—		$	(0.2	)	$	—	$	—		$	—	$	0.9
Corporate and municipal bonds	3.6		—			—			—		—			—		3.6
Mutual funds and other	0.4		(0.4		)	—			—		—			—		—
	$	5.1	$	(0.4	)	$	(0.2	)	$	—	$	—		$	—	$	4.5
Liabilities:
Contingent liabilities	$	22.3	$	—		$	2.0		$	0.1	$	(9.6	)	$	—	$	14.8

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following tables summarize the Company’s pension assets, excluding cash held in the plan, by major category of plan assets measured at fair value on a recurring basis (at least annually) as of September 30, 2013 and 2012. For additional information and a detailed description of each level within the fair value hierarchy, see Note 4.



	September 30, 2013
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	—	$	0.5	$	—	$	0.5
Fixed income:
Government and agencies	—		0.6		—		0.6
Collective funds:
Fixed income	—		8.1		—		8.1
Equities	—		18.7		—		18.7
Real estate	—		1.0		—		1.0
Total	$	—	$	28.9	$	—	$	28.9



	September 30, 2012
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	—	$	0.4	$	—	$	0.4
Fixed income:
Government and agencies	—		0.8		—		0.8
Collective funds:
Fixed income	—		7.7		—		7.7
Equities	—		16.6		—		16.6
Real estate	—		1.0		—		1.0
Total	$	—	$	26.5	$	—	$	26.5

Available-for-sale Securities [Table Text Block]

The following tables summarize the amortized cost basis, the aggregate fair value and gross unrealized holding gains and losses of the Company’s investment securities classified as available-for-sale as of September 30, 2013 and September 30, 2012:



September 30, 2013
Amounts included in deposits with and receivables from exchange-clearing organizations:
	Amortized Cost		Unrealized Holding ⁽¹⁾				Estimated Fair Value
(in millions)	Amortized Cost		Gains		(Losses)		Estimated Fair Value
U.S. government obligations	$	568.5	$	—	$	—	$	568.5
Mortgage-backed securities	5.2		0.1		—		5.3
	$	573.7	$	0.1	$	—	$	573.8


(1)	Unrealized gain/loss on U.S. government obligations as of September 30, 2013, is less than 0.1 million.



September 30, 2012
Amounts included in deposits with and receivables from exchange-clearing organizations:
	Amortized Cost		Unrealized Holding ⁽¹⁾				Estimated Fair Value
(in millions)	Amortized Cost		Gains		(Losses)		Estimated Fair Value
U.S. government obligations	$	1,298.9	$	—	$	—	$	1,298.9
Mortgage-backed securities	6.8		0.1		—		6.9
	$	1,305.7	$	0.1	$	—	$	1,305.8


(1)	Unrealized gain/loss on U.S. government obligations as of September 30, 2012, is less than 0.1 million.

As of September 30, 2013 and September 30, 2012, investments in debt securities classified as available-for-sale (AFS) mature as follows:



September 30, 2013
	Due in				Estimated Fair Value
(in millions)	Less than 1 year		1 year or more		Estimated Fair Value
U.S. government obligations	$	568.5	$	—	$	568.5
Mortgage-backed securities	—		5.3		5.3
	$	568.5	$	5.3	$	573.8



September 30, 2012
	Due in				Estimated Fair Value
(in millions)	Less than 1 year		1 year or more		Estimated Fair Value
U.S. government obligations	$	1,298.9	$	—	$	1,298.9
Mortgage-backed securities	—		6.9		6.9
	$	1,298.9	$	6.9	$	1,305.8

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

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- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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