XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Income Taxes (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income tax provision and the respective effective income tax rates | Our income tax provision for the periods presented and the respective effective income tax rates for such periods are as follows (in millions, except for income tax rates):
|  | For the Three Months ended |  |  | For the Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Income tax provision |  | $ | 5.4 |  |  | $ | 17.7 |  |  | $ | 15.7 |  |  | $ | 33.6 |
Effective income tax rate |  | 11.1 | % |  | 29.3 | % |  | 11.2 | % |  | 21.7 | %

X
- Definition Tabular disclosure of the components of income tax expense and effective income tax rate attributable to continuing operations. + References No definition available. + Details
Name: | int_ScheduleOfIncomeTaxExpenseBenefitAndEffectiveIncomeTaxRateTableTextBlock
Namespace Prefix: | int_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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