RESTRUCTURING - By Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 21,113	$ 0
2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (139)	17,715
South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	19,101	19,101
Personnel expenses \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(67)	1,839
Personnel expenses \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,350	3,350
Personnel expenses \| NAST \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0
Personnel expenses \| Global Forwarding \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,600	2,600
Personnel expenses \| All Other and Corporate \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	750	750
Other selling, general, and administrative expenses \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	193	1,322
Other selling, general, and administrative expenses \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	21,252	21,252
Other selling, general, and administrative expenses \| NAST \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	8
Other selling, general, and administrative expenses \| NAST \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0
Other selling, general, and administrative expenses \| Global Forwarding \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	67	230
Other selling, general, and administrative expenses \| Global Forwarding \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	21,012	21,012
Other selling, general, and administrative expenses \| All Other and Corporate \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	122	1,084
Other selling, general, and administrative expenses \| All Other and Corporate \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	240	240
Income tax benefit - South America \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(5,501)	(5,501)
Income tax benefit - South America \| NAST \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0
Income tax benefit - South America \| Global Forwarding \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(5,501)	(5,501)
Income tax benefit - South America \| All Other and Corporate \| South America Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0
Severance and Other Personnel Expenses \| Personnel expenses \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(332)	16,393
Severance and Other Personnel Expenses \| Personnel expenses \| NAST \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(73)	1,083
Severance and Other Personnel Expenses \| Personnel expenses \| Global Forwarding \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(87)	2,142
Severance and Other Personnel Expenses \| Personnel expenses \| All Other and Corporate \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (172)	$ 13,168