REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 4,421,856	$ 6,798,475	$ 9,033,526	$ 13,614,428
NAST
Disaggregation of Revenue [Line Items]
Total revenues	3,079,268	4,147,046	6,383,455	8,261,935
Global Forwarding
Disaggregation of Revenue [Line Items]
Total revenues	779,867	2,093,190	1,569,845	4,287,587
All Other and Corporate
Disaggregation of Revenue [Line Items]
Total revenues	562,721	558,239	1,080,226	1,064,906
Transportation and logistics services
Disaggregation of Revenue [Line Items]
Total revenues	4,084,827	6,465,642	8,412,792	12,993,993
Transportation and logistics services | Performance obligations completed over time
Disaggregation of Revenue [Line Items]
Total revenues	4,084,827	6,465,642	8,412,792	12,993,993
Transportation and logistics services | NAST | Performance obligations completed over time
Disaggregation of Revenue [Line Items]
Total revenues	3,079,268	4,147,046	6,383,455	8,261,935
Transportation and logistics services | Global Forwarding | Performance obligations completed over time
Disaggregation of Revenue [Line Items]
Total revenues	779,867	2,093,190	1,569,845	4,287,587
Transportation and logistics services | All Other and Corporate | Performance obligations completed over time
Disaggregation of Revenue [Line Items]
Total revenues	225,692	225,406	459,492	444,471
Sourcing
Disaggregation of Revenue [Line Items]
Total revenues	337,029	332,833	620,734	620,435
Sourcing | Performance obligations completed at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	337,029	332,833	620,734	620,435
Sourcing | NAST | Performance obligations completed at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Sourcing | Global Forwarding | Performance obligations completed at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Sourcing | All Other and Corporate | Performance obligations completed at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	$ 337,029	$ 332,833	$ 620,734	$ 620,435