GOODWILL AND INTANGIBLE ASSETS (Details 3) (Panther Expedited Services, Inc., Software, USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Panther Expedited Services, Inc. \| Software
Property, Plant and Equipment
Amortization period	7 years
Annual amortization expense on acquired software expected for fiscal 2013-2017	$ 5

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration