XML 45 R32.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Intangible Assets - (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2016
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:
| June 30, 2016 |  | September 30, 2015
(in millions) | Gross Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Intangible assets subject to amortization |  |  |  |  |  |  |  |  |  |  |
Trade name | $ | 1.1 |  |  | $ | (0.3 | ) |  | $ | 0.8 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Software programs/platforms | 2.7 |  |  | (2.4 | ) |  | 0.3 |  |  | 2.7 |  |  | (2.3 | ) |  | 0.4 |
Customer base | 14.0 |  |  | (5.6 | ) |  | 8.4 |  |  | 14.0 |  |  | (4.9 | ) |  | 9.1 |
| 17.8 |  |  | (8.3 | ) |  | 9.5 |  |  | 16.7 |  |  | (7.2 | ) |  | 9.5 |
Intangible assets not subject to amortization |  |  |  |  |  |  |  |  |  |  |
Trade name | — |  |  | — |  |  | — |  |  | 1.1 |  |  | — |  |  | 1.1 |
Total intangible assets | $ | 17.8 |  |  | $ | (8.3 | ) |  | $ | 9.5 |  |  | $ | 17.8 |  |  | $ | (7.2 | ) |  | $ | 10.6 |
Schedule of Expected Amortization Expense [Table Text Block] | Amortization expense related to intangible assets was $1.2 million and $1.1 million for the nine months ended June 30, 2016 and 2015, respectively. As of June 30, 2016, the estimated future amortization expense was as follows:
(in millions) |
Fiscal 2016 (remaining three months) | $ | 0.4 |
Fiscal 2017 | 1.6 |
Fiscal 2018 | 1.0 |
Fiscal 2019 | 1.0 |
Fiscal 2020 and thereafter | 5.5 |
| $ | 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration