XML 48 R35.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Intangible Assets (Tables) | 3 Months Ended
--- | ---
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite and Indefinite-Lived Intangible Assets | The gross and net carrying values of intangible assets as of the balance sheet dates, by major intangible asset class are as follows (in millions):
| December 31, 2024 |  | September 30, 2024
| Gross Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Intangible assets subject to amortization |  |  |  |  |  |  |  |  |  |  |
Trade/domain names and other licenses | $ | 6.7 |  |  | $ | (3.4) |  |  | $ | 3.3 |  |  | $ | 4.1 |  |  | $ | (3.2) |  |  | $ | 0.9 |
Software programs/platforms | 2.3 |  |  | (1.5) |  |  | 0.8 |  |  | 4.9 |  |  | (4.1) |  |  | 0.8 |
Client and supplier base | 24.0 |  |  | (12.6) |  |  | 11.4 |  |  | 37.7 |  |  | (25.6) |  |  | 12.1 |
Total intangible assets subject to amortization | 33.0 |  |  | (17.5) |  |  | 15.5 |  |  | 46.7 |  |  | (32.9) |  |  | 13.8 |
Intangible assets not subject to amortization |  |  |  |  |  |  |  |  |  |  |
Website domains | 2.0 |  |  | — |  |  | 2.0 |  |  | 2.1 |  |  | — |  |  | 2.1 |
Business licenses | 3.7 |  |  | — |  |  | 3.7 |  |  | 3.7 |  |  | — |  |  | 3.7 |
Total intangible assets not subject to amortization | 5.7 |  |  | — |  |  | 5.7 |  |  | 5.8 |  |  | — |  |  | 5.8 |
Total intangible assets | $ | 38.7 |  |  | $ | (17.5) |  |  | $ | 21.2 |  |  | $ | 52.5 |  |  | $ | (32.9) |  |  | $ | 19.6 |
Schedule of Expected Amortization Expense | As of December 31, 2024, estimated future amortization expense was as follows:
(in millions) |
Fiscal 2025 (remaining months) | $ | 3.3 |
Fiscal 2026 | 3.7 |
Fiscal 2027 | 3.0 |
Fiscal 2028 | 2.1 |
Fiscal 2029 and thereafter | 3.4 |
Total intangible assets subject to amortization | $ | 15.5 |

X
- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life or exist in perpetuity, by either major class or business segment. + References No definition available. + Details
Name: | intl_ScheduleOfFiniteAndIndefiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | intl_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration