PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 781.9	$ 735.2
Accumulated depreciation	(360.9)	(337.5)
Property and equipment, Net	421.0	397.7
Revenue equipment
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	546.9	520.5
Revenue equipment leased and available for lease to owner-operators
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	141.3	123.4
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	58.7	58.0
Furniture and fixtures office and computer equipment vehicles and capitalized software development
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 35.0	$ 33.3

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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