CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows From Operating Activities:
Net income	$ 444.8	$ 476.4	$ 297.1
Reconciling adjustments:
Depreciation and amortization	166.9	153.1	142.2
Amortization of operating lease right-of-use assets	133.1	133.7	142.0
Deferred income taxes, net	8.2	20.9	19.6
(Gain) Loss on disposal of property and equipment	(4.4)	(2.3)	0.6
Share-based compensation expense	22.7	26.5	23.8
(Income) Loss from SSAT	(32.5)	1.0	(2.2)
Distributions from SSAT	21.0	14.0
Other	(7.0)	(10.3)	(0.5)
Changes in assets and liabilities:
Accounts receivable, net	12.3	9.8	(10.9)
Deferred dry-docking payments	(49.4)	(30.2)	(24.1)
Deferred dry-docking amortization	28.9	27.2	25.3
Prepaid expenses and other assets	(24.9)	94.8	33.5
Accounts payable, accruals and other liabilities	(33.8)	(5.6)	10.9
Operating lease assets and liabilities, net	(128.1)	(139.5)	(144.8)
Other long-term liabilities	(10.7)	(1.7)	(2.0)
Net cash provided by operating activities	547.1	767.8	510.5
Cash Flows From Investing Activities:
Capitalized vessel construction expenditures	(244.3)	(95.6)	(52.9)
Capital expenditures (excluding vessel construction expenditures)	(149.1)	(214.5)	(195.5)
Proceeds from disposal of property and equipment, net	9.1	5.9	1.2
Payments for asset acquisitions		(0.8)	(12.4)
Cash and interest deposits into Capital Construction Fund	(118.6)	(120.7)	(128.5)
Withdrawals from Capital Construction Fund	237.3	89.6	49.9
Net cash used in investing activities	(265.6)	(336.1)	(338.2)
Cash Flows From Financing Activities:
Repayments of debt	(39.7)	(39.7)	(76.9)
Payments of deferred loan fees	(2.1)
Dividends paid	(44.9)	(44.8)	(45.0)
Repurchase of Matson common stock	(303.3)	(199.1)	(155.2)
Tax withholding related to net share settlements of restricted stock units	(16.4)	(17.6)	(12.6)
Net cash used in financing activities	(406.4)	(301.2)	(289.7)
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(124.9)	130.5	(117.4)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	266.8	136.3	253.7
Cash, Cash Equivalents and Restricted Cash, End of Year	141.9	266.8	136.3
Reconciliation of Cash, Cash Equivalents, and Restricted Cash, End of Year:
Cash and Cash Equivalents	141.9	266.8	134.0
Restricted Cash			2.3
Total Cash, Cash Equivalents and Restricted Cash, End of Year	141.9	266.8	136.3
Supplemental Cash Flow Information:
Interest paid, net of capitalized interest	5.3	5.9	11.1
Income tax paid, net of income tax refunds (see Note 10)	86.1	(26.5)	7.5
Non-cash Information:
Capital expenditures included in accounts payable, accruals and other liabilities	$ 2.3	$ 7.9	10.8
Non-cash payments for intangible asset acquisitions			$ 2.7