REVENUE EARNING EQUIPMENT, NET - Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Revenue Earning Equipment [Line Items]
Cost	$ 14,647,720	$ 14,469,122
Accumulated Depreciation	(6,257,014)	(6,146,083)
Net Book Value	$ 8,390,706	8,323,039
Trucks
Revenue Earning Equipment [Line Items]
Estimated useful life, minimum	3 years
Estimated useful life, maximum	7 years
Cost	$ 5,288,297	5,223,127
Accumulated Depreciation	(2,089,227)	(2,055,135)
Net Book Value	$ 3,199,070	3,167,992
Tractors
Revenue Earning Equipment [Line Items]
Estimated useful life, minimum	4 years
Estimated useful life, maximum	7 years 6 months
Cost	$ 7,247,049	7,256,002
Accumulated Depreciation	(3,071,862)	(3,059,206)
Net Book Value	$ 4,175,187	4,196,796
Trailers and other
Revenue Earning Equipment [Line Items]
Estimated useful life, minimum	9 years 6 months
Estimated useful life, maximum	12 years
Cost	$ 1,839,053	1,780,487
Accumulated Depreciation	(894,753)	(868,820)
Net Book Value	944,300	911,667
Held for sale
Revenue Earning Equipment [Line Items]
Cost	273,321	209,506
Accumulated Depreciation	(201,172)	(162,922)
Net Book Value	$ 72,149	$ 46,584