XML 96 R76.htm IDEA: XBRL DOCUMENT
v3.25.1

Acquisitions - R.J. O’Brien (Details) - R.J. O’Brien - Subsequent Event $ in Millions | Apr. 14, 2025 USD ($)
--- | ---
Business Acquisition [Line Items] |
Expected price of acquisition | $ 900
Expected price of acquisition, cash | 625
Business acquisition, equity interest issuable, value assigned | $ 275
Business acquisition, equity interest issuable, number of trading days | 10 days
Business combination, expected assumed debt | $ 143
Business combination, maximum debt financing commitments | $ 625

X
- Definition Business Acquisition, Equity Interest Issued or Issuable, Number of Trading Days + References No definition available. + Details
Name: | intl_BusinessAcquisitionEquityInterestIssuedOrIssuableNumberOfTradingDays
Namespace Prefix: | intl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Business Combination, Debt Financing Commitments, Maximum + References No definition available. + Details
Name: | intl_BusinessCombinationDebtFinancingCommitmentsMaximum
Namespace Prefix: | intl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Expected Price, Liabilities Assumed, Debt + References No definition available. + Details
Name: | intl_BusinessCombinationExpectedPriceLiabilitiesAssumedDebt
Namespace Prefix: | intl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Price of Acquisition, Expected, Cash + References No definition available. + Details
Name: | intl_BusinessCombinationPriceOfAcquisitionExpectedCash
Namespace Prefix: | intl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase price of expected business acquisition prior to consideration being transferred. Excludes asset acquisition. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 15 -Paragraph 3 -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479455/805-10-15-3 + Details
Name: | us-gaap_BusinessCombinationPriceOfAcquisitionExpected
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=intl_R.J.OBrienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |