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Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk (Notes) | 9 Months Ended
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Jun. 30, 2019
Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk [Abstract] |
Derivative Instruments and Hedging Activities Disclosure [Text Block] | Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk The Company is party to certain financial instruments with off-balance sheet risk in the normal course of its business. The Company has sold financial instruments that it does not currently own and will therefore be obliged to purchase such financial instruments at a future date. The Company has recorded these obligations in the condensed consolidated financial statements as of June 30, 2019 and September 30, 2018 at the fair values of the related financial instruments. The Company will incur losses if the fair value of the underlying financial instruments increases subsequent to June 30, 2019. The total financial instruments sold, not yet purchased of $861.2 million and $866.5 million as of June 30, 2019 and September 30, 2018, respectively, includes $199.0 million and $193.4 million for derivative contracts, respectively, which represented a liability to the Company based on their fair values as of June 30, 2019 and September 30, 2018. Derivatives The Company utilizes derivative products in its trading capacity as a dealer in order to satisfy client needs and mitigate risk. The Company manages risks from both derivatives and non-derivative cash instruments on a consolidated basis. The risks of derivatives should not be viewed in isolation, but in aggregate with the Company’s other trading activities. The majority of the Company’s derivative positions are included in the condensed consolidated balance sheets in ‘Deposits with and receivables from broker-dealers, clearing organizations and counterparties, net’, ‘Financial instruments owned, at fair value’, ‘Financial instruments sold, not yet purchased, at fair value’ and ‘Payables to broker-dealers, clearing organizations and counterparties’. Listed below are the fair values of the Company’s derivative assets and liabilities as of June 30, 2019 and September 30, 2018. Assets represent net unrealized gains and liabilities represent net unrealized losses.
| June 30, 2019 |  | September 30, 2018
(in millions) | Assets (1) |  | Liabilities (1) |  | Assets (1) |  | Liabilities (1)
Derivative contracts not accounted for as hedges: |  |  |  |  |  |  |
Exchange-traded commodity derivatives | $ | 1,577.7 |  |  | $ | 1,610.4 |  |  | $ | 2,455.7 |  |  | $ | 2,499.3 |
OTC commodity derivatives | 241.9 |  |  | 380.8 |  |  | 207.0 |  |  | 369.9 |
Exchange-traded foreign exchange derivatives | 76.9 |  |  | 73.1 |  |  | 49.8 |  |  | 37.2 |
OTC foreign exchange derivatives | 334.2 |  |  | 308.7 |  |  | 302.5 |  |  | 303.9 |
Exchange-traded interest rate derivatives | 1,200.7 |  |  | 1,417.6 |  |  | 449.3 |  |  | 478.7 |
OTC interest rate derivatives | 20.4 |  |  | 22.5 |  |  | 24.8 |  |  | 25.9 |
Exchange-traded equity index derivatives | 955.8 |  |  | 904.2 |  |  | 4,541.8 |  |  | 4,794.0 |
TBA and forward settling securities | 6.1 |  |  | 8.4 |  |  | 5.0 |  |  | 2.1 |
Gross fair value of derivative contracts | 4,413.7 |  |  | 4,725.7 |  |  | 8,035.9 |  |  | 8,511.0 |
Impact of netting and collateral | (4,281.8 | ) |  | (4,512.7 | ) |  | (8,118.5 | ) |  | (8,317.6 | )
Total fair value included in 'Deposits with and receivables from broker-dealers, clearing organizations, and counterparties, net' | $ | (114.3 | ) |  |  |  | $ | (268.7 | ) |  |
Total fair value included in 'Financial instruments owned, at fair value' | $ | 246.2 |  |  |  |  | $ | 186.1 |  |  |
Total fair value included in 'Payables to broker-dealers, clearing organizations and counterparties' |  |  | $ | 14.0 |  |  |  |  | $ | — |
Fair value included in 'Financial instruments sold, not yet purchased, at fair value' |  |  | $ | 199.0 |  |  |  |  | $ | 193.4 |
(1) | As of June 30, 2019 and September 30, 2018, the Company’s derivative contract volume for open positions were approximately 12.9 million and 10.6 million contracts, respectively.
The Company’s derivative contracts are principally held in its Commercial Hedging and Clearing and Execution Services segments. The Company assists its Commercial Hedging segment clients in protecting the value of their future production by entering into option or forward agreements with them on an OTC basis. The Company also provides its Commercial Hedging segment clients with option products, including combinations of buying and selling puts and calls. The Company mitigates its risk by offsetting the client’s transaction simultaneously with one of the Company’s trading counterparties or with a similar but not identical exchange-traded position. The risk mitigation of these offsetting trades is not within the documented hedging designation requirements of Topic 815. These derivative contracts are traded along with cash transactions because of the integrated nature of the markets for these products. The Company manages the risks associated with derivatives on an aggregate basis along with the risks associated with its proprietary trading and market-making activities in cash instruments as part of its firm-wide risk management policies. In particular, the risks related to derivative positions may be partially offset by inventory, unrealized gains in inventory or cash collateral paid or received. The Company has derivative instruments, which consist of TBA securities and forward settling transactions that are used to manage risk exposures in the trading inventory of the Company’s domestic institutional fixed income business. The fair value on these transactions are recorded in ‘deposits with and receivables from or payables to broker-dealers, clearing organizations and counterparties, net’. Realized and unrealized gains and losses on securities and derivative transactions are reflected in ‘principal gains, net’. As of June 30, 2019 and September 30, 2018, these transactions are summarized as follows:
| June 30, 2019 |  | September 30, 2018
(in millions) | Gain / (Loss) |  | Notional Amounts |  | Gain / (Loss) |  | Notional Amounts
Unrealized gain on TBA securities purchased within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts | $ | 3.6 |  |  | $ | 1,256.6 |  |  | $ | 1.2 |  |  | $ | 721.5 |
Unrealized loss on TBA securities purchased within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts | $ | (0.2 | ) |  | $ | 254.5 |  |  | $ | (0.6 | ) |  | $ | 293.2 |
Unrealized gain on TBA securities sold within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts | $ | — |  |  | $ | — |  |  | $ | 3.2 |  |  | $ | (1,099.5 | )
Unrealized gain on TBA securities sold within payables to broker-dealers, clearing organizations and counterparties and related notional amounts | $ | 0.3 |  |  | $ | (290.6 | ) |  | $ | — |  |  | $ | — |
Unrealized loss on TBA securities sold within payables to broker-dealers, clearing organizations and counterparties and related notional amounts | $ | (6.9 | ) |  | $ | (2,132.1 | ) |  | $ | — |  |  | $ | — |
Unrealized loss on TBA securities sold within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts | $ | — |  |  | $ | — |  |  | $ | (1.5 | ) |  | $ | (812.7 | )
Unrealized gain on forward settling securities purchased within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts |  |  |  |  |  |  | $ | 0.5 |  |  | $ | 614.3 |
Unrealized loss on forward settling securities purchased within payables to broker-dealers, clearing organizations and counterparties and related notional amounts | $ | (1.3 | ) |  | $ | 492.7 |  |  | $ | — |  |  | $ | — |
Unrealized gain on forward settling securities sold within deposits with and receivables from broker-dealers, clearing organizations and counterparties, net and related notional amounts | $ | 2.2 |  |  | $ | (345.7 | ) |  | $ | 0.1 |  |  | $ | (427.2 | )
(1) The notional amounts of these instruments reflect the extent of the Company's involvement in TBA and forward settling securities and do not represent risk of loss due to counterparty non-performance. |  |  |  |  |  |  |
The following table sets forth the Company’s net gains from derivative contracts for the three and nine months ended June 30, 2019 and 2018 in accordance with Topic 815. The net gains set forth below are included in ‘Cost of sales of physical commodities’ and ‘principal gains, net’ in the condensed consolidated income statements.
| Three Months Ended June 30, |  | Nine Months Ended June 30,
(in millions) | 2019 |  | 2018 |  | 2019 |  | 2018
Commodities | $ | 19.5 |  |  | $ | 38.1 |  |  | $ | 63.6 |  |  | $ | 71.9 |
Foreign exchange | 1.6 |  |  | 2.9 |  |  | 5.3 |  |  | 7.7 |
Interest rate and equity | (0.6 | ) |  | 0.5 |  |  | (3.2 | ) |  | 1.1 |
TBA and forward settling securities | (8.0 | ) |  | — |  |  | (6.7 | ) |  | 10.3 |
Net gains from derivative contracts | $ | 12.5 |  |  | $ | 41.5 |  |  | $ | 59.0 |  |  | $ | 91.0 |
Credit Risk In the normal course of business, the Company purchases and sells financial instruments, commodities and foreign currencies as either a principal or agent on behalf of its clients. If either the client or counterparty fails to perform, the Company may be required to discharge the obligations of the nonperforming party. In such circumstances, the Company may sustain a loss if the fair value of the financial instrument, commodity, or foreign currency is different from the contract value of the transaction. The majority of the Company’s transactions and, consequently, the concentration of its credit exposure are with commodity exchanges, clients, broker-dealers and other financial institutions. These activities primarily involve collateralized and uncollateralized arrangements and may result in credit exposure in the event that a counterparty fails to meet its contractual obligations. The Company’s exposure to credit risk can be directly impacted by volatile financial markets, which may impair the ability of counterparties to satisfy their contractual obligations. The Company seeks to control its credit risk through a variety of reporting and control procedures, including establishing credit and/or position limits based upon a review of the counterparties’ financial condition and credit ratings. The Company monitors collateral levels on a daily basis for compliance with regulatory and internal guidelines and requests changes in collateral levels as appropriate. The Company is a party to financial instruments in the normal course of its business through client and proprietary trading accounts in exchange-traded and OTC derivative instruments. These instruments are primarily the result of the execution of orders for commodity futures, options on futures, OTC swaps and options and spot and forward foreign currency contracts on behalf of its clients, substantially all of which are transacted on a margin basis. Such transactions may expose the Company to significant credit risk in the event margin requirements are not sufficient to fully cover losses which clients may incur. The Company controls the risks associated with these transactions by requiring clients to maintain margin deposits in compliance with individual exchange regulations and internal guidelines. The Company monitors required margin levels daily, and therefore may require clients to deposit additional collateral or reduce positions when necessary. The Company also establishes credit limits for clients, which are monitored daily. The Company evaluates each client’s creditworthiness on a case by case basis. Clearing, financing, and settlement activities may require the Company to maintain funds with or pledge securities as collateral with other financial institutions. Generally, these exposures to both clients and exchanges are subject to master netting, or client agreements, which reduce the exposure to the Company by permitting receivables and payables with such clients to be offset in the event of a client default. Management believes that the margin deposits held as of June 30, 2019 and September 30, 2018 were adequate to minimize the risk of material loss that could be created by positions held at that time. Additionally, the Company monitors collateral fair value on a daily basis and adjusts collateral levels in the event of excess market exposure. Generally, these exposures to both clients and counterparties are subject to master netting or client agreements which reduce the exposure to the Company. Derivative financial instruments involve varying degrees of off-balance sheet market risk whereby changes in the fair values of underlying financial instruments may result in changes in the fair value of the financial instruments in excess of the amounts reflected in the condensed consolidated balance sheets. Exposure to market risk is influenced by a number of factors, including the relationships between the financial instruments and the Company’s positions, as well as the volatility and liquidity in the markets in which the financial instruments are traded. The principal risk components of financial instruments include, among other things, interest rate volatility, the duration of the underlying instruments and changes in foreign exchange rates. The Company attempts to manage its exposure to market risk through various techniques. Aggregate market limits have been established and market risk measures are routinely monitored against these limits.

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- Definition Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details
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