Amount Outstanding on Committed Credit Facilities

No definition available.

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- Definition

Credit Facilities Expiring Within One Year

+ References

No definition available.

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- Definition

Maximum Borrowing Capacity Under Credit Facilities

+ References

No definition available.

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- Definition

Non-Refundable Commitment Fee

+ References

No definition available.

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- Definition

Senior Secured Bridge Loan

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Including the current and noncurrent portions, the carrying value as of the balance sheet date of notes payable to banks, excluding mortgage notes, initially due beyond one year or beyond the operating cycle if longer.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Credit Facilities - Credit Facilities and Financing Bridge Commitment (Details) - USD ($)	Feb. 26, 2020	Sep. 30, 2020	Sep. 30, 2019	Apr. 30, 2015
Line of Credit Facility [Line Items]
Senior secured bridge loan	$ 350,000,000
Non-refundable commitment fee	$ 4,400,000
Long-term debt, gross		$ 180,100,000
Line of credit facility borrowing		20,000,000.0
Maximum borrowing capacity under credit facilities		736,600,000
Line of credit facility		0	$ 0
Amount outstanding		427,600,000	366,100,000
Notes payable to bank		0	400,000	$ 4,000,000.0
Senior Secured Notes		336,000,000.0	0
Lenders under loans		783,600,000	369,900,000
Debt instrument, unamortized discount (premium) and debt issuance costs, net		500,000
StoneX Inc. Bank of America Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Long-term debt, gross		180,100,000
Line of credit facility borrowing		196,500,000
Maximum borrowing capacity under credit facilities		376,600,000
Loans Payable		179,500,000	167,600,000
Long-term line of credit, noncurrent		23,000,000.0	70,000,000.0
Long-term debt		202,500,000	237,600,000
StoneX Financial Margin line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility borrowing		75,000,000.0
Long-term debt		0	0
Line of credit facility		0	0
FMS Sub-note commodity line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility borrowing		260,000,000.0
Line of credit facility		200,100,000	128,500,000
StoneX, Ltd [Member]
Line of Credit Facility [Line Items]
Line of credit facility borrowing		25,000,000.0
Line of credit facility		25,000,000.0	0
IFFI Uncommitted Lines of Credit [Member] [Member]
Line of Credit Facility [Line Items]
Line of credit facility borrowing		100,000,000.0
Short-term Debt		0	0
IFL Uncommitted Line of Credit [Member]
Line of Credit Facility [Line Items]
Short-term Debt		0	3,400,000
Rabobank Uncommited Line of Credit [Domain]
Line of Credit Facility [Line Items]
Short-term Debt		20,000,000.0	$ 0
Senior Notes [Member]
Line of Credit Facility [Line Items]
Debt instrument, unamortized discount (premium) and debt issuance costs, net		14,000,000.0
Main line of credit facilities [Member]
Line of Credit Facility [Line Items]
Credit Facilities Expiring Within One Year		$ 75,000,000.0