GENERAL AND SIGNIFICANT ACCOUNTING POLICIES - RECOGNITION OF REVENUES AND EXPENSES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Total	$ 782.0	$ 722.1
Ocean Transportation
Ocean Transportation services	632.9	565.8
Terminal and other related services	2.5	8.7
Fuel sales	2.0	2.9
Vessel management and related services		1.6
Total	$ 637.4	$ 579.0
Percentage of ocean transportation revenues and fuel sales denominated in foreign currency	3.00%	3.00%
Logistics
Transportation Brokerage and Freight Forwarding services	$ 127.3	$ 127.4
Warehousing services	9.0	9.1
Supply Chain Management services	8.3	6.6
Total	$ 144.6	$ 143.1
Percentage of transportation brokerage and freight forwarding services revenue denominated in foreign currency	3.00%	3.00%