Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows From Operating Activities:
Net income	$ 985.9	$ 532.9
Reconciling adjustments:
Depreciation and amortization	105.6	100.9
Amortization of operating lease right of use assets	113.9	73.9
Deferred income taxes	146.3	30.3
Share-based compensation expense	15.5	14.2
Income from SSAT	(82.1)	(35.0)
Distributions from SSAT	40.3	46.9
Other	(0.2)	(1.1)
Changes in assets and liabilities:
Accounts receivable, net	13.9	(75.2)
Deferred dry-docking payments	(16.7)	(25.8)
Deferred dry-docking amortization	18.6	18.0
Prepaid expenses and other assets	(110.2)	(46.7)
Accounts payable, accruals and other liabilities	(5.0)	30.2
Operating lease liabilities	(113.8)	(72.1)
Other long-term liabilities	(9.5)	(8.1)
Net cash provided by operating activities	1,102.5	583.3
Cash Flows From Investing Activities:
Capitalized vessel construction expenditures	(11.9)
Other capital expenditures	(113.4)	(244.7)
Cash deposits into Capital Construction Fund	(579.7)	(31.2)
Withdrawals from Capital Construction Fund	14.7	31.2
Other	(2.6)	2.2
Net cash used in investing activities	(692.9)	(242.5)
Cash Flows From Financing Activities:
Repayments of debt	(97.2)	(41.1)
Proceeds from revolving credit facility		304.3
Repayments of revolving credit facility		(376.1)
Payment of financing costs		(3.0)
Dividends paid	(36.9)	(33.3)
Repurchase of Matson common stock	(296.9)	(115.7)
Tax withholding related to net share settlements of restricted stock units	(19.6)	(14.4)
Net cash used in financing activities	(450.6)	(279.3)
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(41.0)	61.5
Cash, Cash Equivalents and Restricted Cash, Beginning of the Period	287.7	19.7
Cash, Cash Equivalents and Restricted Cash, End of the Period	246.7	81.2
Reconciliation of Cash, Cash Equivalents and Restricted Cash, End of the Period:
Cash and Cash Equivalents	242.8	75.9
Restricted Cash	3.9	5.3
Total Cash, Cash Equivalents and Restricted Cash, End of the Period	246.7	81.2
Supplemental Cash Flow Information:
Interest paid, net of capitalized interest	13.6	15.3
Income tax payments, net of refunds	212.4	162.1
Non-cash Information:
Capital expenditures included in accounts payable, accruals and other liabilities	$ 3.9	$ 5.6