XML 35 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2014

Income Taxes

Schedule of Income tax provision and the respective effective income tax rates

	For the Three Months ended						For the Nine Months ended
	September 30,						September 30,
	2014			2013			2014			2013
Income tax provision	$	13,441		$	8,191		$	34,964		$	32,090
Effective income tax rate		19.8	%		14.0	%		18.8	%		17.3	%

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

- Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration