XML 49 R37.htm IDEA: XBRL DOCUMENT
v3.19.2

Intangible Assets - (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2019
Intangible Assets [Abstract] |
Schedule of Finite and Indefinite-Lived Intangible Assets [Table Text Block] | 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):
| June 30, 2019 |  | September 30, 2018
| Gross Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |
Software programs/platforms | $ | 2.7 |  |  | $ | (2.6 | ) |  | $ | 0.1 |  |  | $ | 2.7 |  |  | $ | (2.6 | ) |  | $ | 0.1 |
Client base | 21.4 |  |  | (12.0 | ) |  | 9.4 |  |  | 21.4 |  |  | (10.1 | ) |  | 11.3 |
Total intangible assets subject to amortization: | $ | 24.1 |  |  | $ | (14.6 | ) |  | $ | 9.5 |  |  | $ | 24.1 |  |  | $ | (12.7 | ) |  | $ | 11.4 |
Intangible assets not subject to amortization: |  |  |  |  |  |  |  |  |  |  |
Business licenses | $ | 2.7 |  |  | $ | — |  |  | $ | 2.7 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Total intangible assets not subject to amortization: | $ | 2.7 |  |  | $ | — |  |  | $ | 2.7 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Total intangible assets | $ | 26.8 |  |  | $ | (14.6 | ) |  | $ | 12.2 |  |  | $ | 24.1 |  |  | $ | (12.7 | ) |  | $ | 11.4 |
Schedule of Expected Amortization Expense [Table Text Block] | Amortization expense related to intangible assets was $1.9 million and $1.7 million for the nine months ended June 30, 2019 and 2018, respectively. Amortization expense related to intangible assets was $0.6 million for the three months ended June 30, 2019 and 2018. As of June 30, 2019, the estimated future amortization expense was as follows:
(in millions) |
Fiscal 2019 (remaining three months) | $ | 0.7 |
Fiscal 2020 | 2.2 |
Fiscal 2021 | 2.2 |
Fiscal 2022 | 1.0 |
Fiscal 2023 and thereafter | 3.4 |
| $ | 9.5 |

X
- Definition Intangible Assets [Abstract] + References No definition available. + Details
Name: | intl_IntangibleAssetsAbstract
Namespace Prefix: | intl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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: | nonnum:textBlockItemType
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration