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Subsequent Event (Details) | 1 Months Ended
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Feb. 29, 2016 item
Subsequent event |
Subsequent Events |
Number of airports to be acquired | 8

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- Definition Number of airports to be acquired through a definitive agreement. + References No definition available. + Details
Name: | int_NumberOfAirportsToBeAcquired
Namespace Prefix: | int_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |