SHARE-BASED COMPENSATION (Details) - Time Based And Performance Based Shares - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
SHARE-BASED AWARDS
Shares granted	133,200
Weighted average grant date fair value (in dollars per share)	$ 143.66
Total unrecognized compensation cost	$ 38.5
Unrecognized compensation cost over weighted average period to be recognized	1 year 10 months 24 days
Selling, general and administrative expenses
SHARE-BASED AWARDS
Total stock-based compensation cost	$ 5.8	$ 5.7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Matson, Inc. 10-Q