OPERATING SEGMENT DATA - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
REVENUES
Revenues	$ 1,103,464	$ 1,321,692	$ 2,209,558	$ 2,589,783
Asset Based
REVENUES
Revenues	694,755	774,554	1,363,975	1,450,072
Asset-Light
REVENUES
Revenues	407,926	546,270	843,959	1,137,992
Operating Segments | Asset Based
REVENUES
Revenues	722,015	802,622	1,419,832	1,507,933
Operating Segments | Asset-Light
REVENUES
Revenues	409,816	549,655	847,908	1,144,939
Other and eliminations
REVENUES
Revenues	$ (28,367)	$ (30,585)	$ (58,182)	$ (63,089)