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Physical Commodities Inventory (Notes) | 9 Months Ended
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Jun. 30, 2019
Physical Commodities Inventory [Abstract] |
Inventory Disclosure [Text Block] | Physical Commodities Inventory The Company’s inventories consist of finished physical commodities. Inventories by component of the Company’s Physical Commodities segment are shown below.
(in millions) | June 30, 2019 |  | September 30, 2018
Physical Ag & Energy(1) | $ | 147.6 |  |  | $ | 114.7 |
Precious metals - held by broker-dealer subsidiary(2) | 22.3 |  |  | 42.1 |
Precious metals - held by non-broker-dealer subsidiaries(3) | 177.9 |  |  | 65.7 |
Physical commodities inventory | $ | 347.8 |  |  | $ | 222.5 |
(1) Physical Ag & Energy consists of agricultural commodity inventories, including corn, soybeans, wheat, dried distillers grain, canola, sorghum, coffee, cocoa, cotton, and others. The agricultural commodity inventories are carried at net realizable value, which approximates selling prices in the ordinary course of business, less disposal costs, with changes in net realizable value included as a component of ‘cost of sales of physical commodities’ on the condensed consolidated income statements. The agricultural inventories have reliable, readily determinable and realizable market prices, have relatively insignificant costs of disposal and are available for immediate delivery. Physical Ag & Energy also maintains energy related inventory which is valued at the lower of cost or net realizable value. (2) Precious metals held by the Company’s subsidiary, INTL FCStone Ltd, a United Kingdom based broker-dealer subsidiary, is measured at fair value, with changes in fair value included as a component of ‘principal gains, net’ on the condensed consolidated income statements, in accordance with U.S. GAAP accounting requirements for broker-dealers. (3) Precious metals inventory held by subsidiaries that are not broker-dealers are valued at the lower of cost or net realizable value. The Company has recorded lower of cost or net realizable adjustments for certain precious metals inventory of $2.6 million and $0.4 million as of June 30, 2019 and September 30, 2018, respectively. The adjustments are included in ‘cost of sales of physical commodities’ in the condensed consolidated income statements.

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- Definition Physical Commodities Inventory [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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