SIGNIFICANT ACCOUNTING POLICIES - RECOGNITION OF REVENUES AND EXPENSES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total	$ 1,261.1	$ 874.9	$ 2,426.6	$ 1,586.7
Ocean Transportation
Total	1,049.2	682.9	1,993.1	1,243.4
Logistics
Total	211.9	192.0	433.5	343.3
Ocean. Transportation.
Ocean Transportation services	1,040.2	674.4	1,976.9	1,228.6
Terminal and other related services	4.7	4.9	8.4	7.7
Fuel sales	2.8	1.8	4.7	3.2
Vessel management and related services	1.5	1.8	3.1	3.9
Total	1,049.2	682.9	$ 1,993.1	1,243.4
Percentage of ocean transportation revenues and fuel sales denominated in foreign currency			3.00%
Logistics.
Transportation Brokerage and Freight Forwarding Services	184.4	174.5	$ 379.3	309.8
Warehousing and distribution services	13.8	10.4	25.9	19.6
Supply chain management and other services	13.7	7.1	28.3	13.9
Total	$ 211.9	$ 192.0	$ 433.5	$ 343.3
Percentage of transportation brokerage and freight forwarding services revenue denominated in foreign currency			6.50%