Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2013
Document and Entity Information
Entity Registrant Name	Matson, Inc.
Entity Central Index Key	0000003453
Document Type	10-Q
Document Period End Date	Jun. 30, 2013
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	42,721,810
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2

Condensed Consolidated Statements of Income and Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Revenue:
Ocean transportation	$ 310.0	$ 299.5	$ 609.9	$ 579.0
Logistics	106.6	94.7	201.4	181.3
Total operating revenue	416.6	394.2	811.3	760.3
Costs and Expenses:
Operating costs	344.9	329.0	687.7	659.0
Equity in loss (income) of terminal joint venture	0.8	(1.6)	0.6	(2.4)
Selling, general and administrative	34.4	28.5	67.8	56.8
Separation costs		5.8		8.3
Operating costs and expenses	380.1	361.7	756.1	721.7
Operating Income	36.5	32.5	55.2	38.6
Interest expense	(3.6)	(1.9)	(7.3)	(3.9)
Income from Continuing Operations Before Income Taxes	32.9	30.6	47.9	34.7
Income tax expense	12.8	15.3	18.7	17.4
Income From Continuing Operations	20.1	15.3	29.2	17.3
Loss From Discontinued Operations (net of income taxes)	0	(7.5)	0	(6.1)
Net Income	20.1	7.8	29.2	11.2
Other Comprehensive Income, Net of Tax:
Net Income	20.1	7.8	29.2	11.2
Defined benefit pension plans:
Net loss and prior service cost	(0.8)	(1.1)	(0.8)	(1.1)
Less: amortization of prior service cost included in net periodic pension cost	(0.4)	(0.7)	(0.7)	(0.5)
Less: amortization of net loss included in net periodic pension cost	0.9	1.4	2.3	2.2
Foreign currency translation adjustment	(0.4)		(0.2)
Other Comprehensive Income	(0.7)	(0.4)	0.6	0.6
Comprehensive Income	$ 19.4	$ 7.4	$ 29.8	$ 11.8
Basic Earnings Per Share:
Continuing operations (in dollars per share)	$ 0.47	$ 0.36	$ 0.68	$ 0.41
Discontinued operations (in dollars per share)		$ (0.18)		$ (0.14)
Net income (in dollars per share)	$ 0.47	$ 0.18	$ 0.68	$ 0.27
Diluted Earnings Per Share:
Continuing operations (in dollars per share)	$ 0.47	$ 0.36	$ 0.68	$ 0.41
Discontinued operations (in dollars per share)		$ (0.18)		$ (0.15)
Net income (in dollars per share)	$ 0.47	$ 0.18	$ 0.68	$ 0.26
Weighted Average Number of Shares Outstanding:
Basic (in shares)	42.7	42.3	42.7	42.1
Diluted (in shares)	43.0	42.8	43.0	42.5
Cash Dividends Per Share (in dollars per share)	$ 0.15	$ 0.315	$ 0.30	$ 0.63

Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 39.1	$ 19.9
Accounts and notes receivable, net	179.6	174.7
Inventories	4.3	4.3
Deferred income taxes	6.6	6.6
Prepaid expenses and other assets	24.1	28.6
Total current assets	253.7	234.1
Investment in terminal joint venture	59.0	59.6
Property, at cost	1,782.2	1,770.8
Less accumulated depreciation and amortization	(1,038.2)	(1,008.3)
Property - net	744.0	762.5
Other Assets	111.8	118.1
Total	1,168.5	1,174.3
Current Liabilities:
Notes payable and current portion of long-term debt	12.4	16.4
Accounts payable	138.5	125.8
Payroll and vacation benefits	16.5	16.0
Uninsured claims	13.6	11.2
Accrued and other liabilities	25.1	24.0
Total current liabilities	206.1	193.4
Long-term Liabilities:
Long-term debt	280.0	302.7
Deferred income taxes	242.4	251.9
Employee benefit plans	109.4	108.0
Uninsured claims and other liabilities	38.2	38.4
Total long-term liabilities	670.0	701.0
Commitments and Contingencies (Note 4)
Shareholders' Equity:
Capital stock	32.0	31.9
Additional paid in capital	255.2	252.7
Accumulated other comprehensive loss	(44.9)	(45.5)
Retained earnings	50.1	40.8
Total shareholders' equity	292.4	279.9
Total	$ 1,168.5	$ 1,174.3

Condensed Consolidated Statement of Stockholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock	Additional Capital	Accumulated Other Comprehensive Income	Retained Earnings
Balance at Dec. 31, 2012	$ 279.9	$ 31.9	$ 252.7	$ (45.5)	$ 40.8
Balance (in shares) at Dec. 31, 2012		42.6
Increase (Decrease) in Stockholders' Equity
Net Income	29.2				29.2
Other comprehensive income	0.6			0.6
Excess tax benefit and share withholding	0.4		0.4
Share-based compensation	2.8		2.8
Shares issued	(0.6)	0.1	(0.7)
Shares issued (in shares)		0.1
Dividends	(19.9)				(19.9)
Balance at Jun. 30, 2013	$ 292.4	$ 32.0	$ 255.2	$ (44.9)	$ 50.1
Balance (in shares) at Jun. 30, 2013		42.7

Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities from Continuing Operations
Income From Continuing Operations	$ 29.2	$ 17.3
Reconciling adjustments:
Depreciation and amortization	35.0	37.4
Deferred income taxes	(10.1)	(3.4)
Gain on disposal of property		(0.1)
Post-retirement expense	0.9	1.9
Share-based compensation expense	2.8	1.8
Equity in loss (income) of terminal joint venture	0.6	(2.4)
Changes in assets and liabilities:
Accounts receivable	(4.8)	1.8
Inventory		(0.2)
Deferred dry-docking payments	(6.0)	(21.3)
Deferred dry-docking amortization	11.2	11.1
Prepaid expenses and other assets	5.2	(1.9)
Accounts payable and accrued liabilities	17.3	(19.0)
Other liabilities	(1.8)	5.5
Net cash provided by operating activities from continuing operations	79.5	28.5
Cash Flows from Investing Activities from Continuing Operations:
Capital expenditures	(9.8)	(17.5)
Proceeds from disposal of property and other assets	2.9	0.5
Deposits into Capital Construction Fund	(2.2)	(2.2)
Withdrawals from Capital Construction Fund	2.2	2.2
Acquisitions and other	(9.6)
Contribution from the Former Parent Company		24.9
Net cash (used in) provided by investing activities from continuing operations	(16.5)	7.9
Cash Flows from Financing Activities from Continuing Operations:
Proceeds from issuance of long-term debt net of issuance costs	21.0	185.1
Payments of long-term debt	(39.7)	(5.7)
Payments on line-of-credit agreements, net	(11.0)	(6.0)
Payment on capital leases	(0.5)
Contribution upon Separation to A&B		(151.4)
(Payments) proceeds from issuance of capital stock	(0.6)	21.7
Distribution to the Former Parent Company for proceeds from issuance of capital stock		(21.7)
Cash assumed by A&B upon Separation		(2.5)
Dividends paid	(13.0)	(26.7)
Net cash used in financing activities from continuing operations	(43.8)	(7.2)
Cash Flows from Discontinued Operations:
Cash flows used in operating activities of discontinued operations		(30.3)
Cash flows used in investing activities of discontinued operations		(18.8)
Cash flows provided by financing activities of discontinued operations		33.9
Net cash flows used in discontinued operations		(15.2)
Net Increase in Cash and Cash Equivalents	19.2	14.0
Cash and cash equivalents, beginning of the period	19.9	21.5
Cash and cash equivalents, end of the period	39.1	35.5
Other Cash Flow Information:
Interest paid	7.0	4.3
Income taxes paid	8.9	14.1
Other Non-cash Information:
Capital expenditures included in accounts payable and accrued liabilities	2.7	1.7
Non-cash capital lease obligations	2.9
Accrued dividend	$ 6.9	$ 6.4

Description of Business:

6 Months Ended

Jun. 30, 2013

Description of Business:

Description of Business:

(1) Description of Business “Matson” or the “Company” means Matson, Inc., a holding company incorporated in January 2012 in the State of Hawaii, together with its primary operating company, Matson Navigation Company, Inc. (“MatNav”), and all of its subsidiaries. MatNav is a wholly-owned subsidiary of Matson, Inc.

Founded in 1882, Matson is a leading U.S. ocean freight carrier in the Pacific. Matson provides a vital lifeline to the island economies of Hawaii, Guam and Micronesia, and operates a premium, expedited service from China to Southern California. Also, effective January 2013, the Company began providing service to various islands in the South Pacific. The Company owns a fleet of 18 vessels including containerships, combination container and roll-on/roll-off ships and custom-designed barges. Matson Logistics, Inc. (“Matson Logistics” or “Logistics”), a wholly-owned subsidiary of MatNav, was established in 1987 and extends the geographic reach of Matson’s transportation network throughout the continental U.S. and China. Matson Logistics’ integrated, asset-light logistics services include rail intermodal, highway brokerage and warehousing.

Ocean Transportation: The ocean transportation segment of Matson’s business, which is conducted through MatNav, is an asset-based business that generates revenue primarily through the carriage of containerized freight between various U.S. Pacific Coast, Hawaii, Guam, Micronesia, China and other Pacific island ports.

In January 2013, Matson purchased the primary assets of the former Reef Shipping Limited, a South Pacific ocean carrier based in Auckland, New Zealand. Matson South Pacific transports freight between New Zealand and other South Pacific Islands, such as Fiji, Samoa, American Samoa, Tonga and Cook Islands.

The Company also has a 35 percent ownership interest in SSA Terminals, LLC (“SSAT”) through a joint venture between Matson Ventures, Inc., a wholly-owned subsidiary of MatNav, and SSA Ventures, Inc. (“SSA”), a subsidiary of Carrix, Inc. SSAT provides terminal and stevedoring services to various carriers at six terminal facilities on the U.S. Pacific Coast and to MatNav at several of those facilities. Matson records its share of income in the joint venture in operating expenses within the ocean transportation segment, due to the operations of the joint venture being an integral part of the Company’s business.

Logistics: The logistics segment of Matson’s business, which is conducted through Matson Logistics, is an asset-light business that is a provider of domestic and international rail intermodal service (“Intermodal”), long-haul and regional highway brokerage, specialized hauling, flat-bed and project work, less-than-truckload services, expedited freight services, and warehousing and distribution services (collectively “Highway”). Warehousing, packaging and distribution services are provided by Matson Logistics Warehousing, Inc. (“Matson Logistics Warehousing”), a wholly-owned subsidiary of Matson Logistics.

Separation Transaction: On December 1, 2011, Alexander & Baldwin, Inc., the former parent company of MatNav (the “Former Parent Company”), announced that its Board of Directors unanimously approved a plan to pursue the separation (the “Separation”) of the Former Parent Company to create two independent, publicly traded companies:

· Matson, a Hawaii-based ocean transportation company serving the U.S. Pacific Coast, Hawaii, Guam, Micronesia and China, and a logistics company; and

· Alexander & Baldwin, Inc. (“A&B”), a Hawaii-based land company with interests in real estate development, commercial real estate and agriculture.

On February 13, 2012, the Former Parent Company entered into an Agreement and Plan of Merger to reorganize itself by forming a holding company incorporated in Hawaii, Alexander & Baldwin Holdings, Inc. (“Holdings”). The holding company structure helped facilitate the Separation through the organization and segregation of the assets of the two businesses. In addition, the holding company reorganization was intended to help preserve the Company’s status as a U.S. citizen under certain U.S. maritime and vessel documentation laws (popularly referred to as the Jones Act) by, amongst other things, limiting the percentage of outstanding shares of common stock in the holding company that may be owned or controlled in the aggregate by non-U.S. citizens to a maximum permitted percentage of 22%.

The Separation was completed on June 29, 2012. In the Separation, the shareholders of Holdings received one share of common stock of A&B for every share of Holdings held of record as of June 18, 2012. Immediately following the Separation, Alexander & Baldwin Holdings, Inc. changed its name to Matson, Inc. For accounting purposes, Matson is the successor company to the Former Parent Company.

Prior to the completion of the Separation, the Company and A&B entered into a Separation and Distribution Agreement, Tax Sharing Agreement and an Employee Matters Agreement, each dated June 8, 2012, that govern the post-Separation relationship. In addition, the Company and A&B entered into a Transition Services Agreement, dated June 8, 2012, under which each company agreed to provide the other with various services on an interim, transitional basis, for up to 24 months.

Also in relation to the Separation, intercompany receivables, payables, loans and other accounts between A&B and Matson, in existence immediately prior to the Separation, were satisfied and/or settled; and intercompany agreements and all other arrangements in effect immediately prior to the distribution were terminated or canceled, subject to certain exceptions.

During the year ended December 31, 2012, Matson incurred total cash outflows of $166.2 million, $161.6 million of which was incurred during the second quarter of 2012, in relation to the Separation. The total cash outflows were made up of three components: capital contribution, capitalized debt financing costs and Separation related expenses referred to as Separation costs in the Condensed Consolidated Statements of Income and Comprehensive Income. The Separation related expenses of $8.3 million, incurred during the six months ended June 30, 2012 and capitalized debt financing costs of $1.9 million are reported under the cash flows provided by operating activities from continuing operations and cash flows used in financing activities from continuing operations, respectively, since these costs do not qualify as discontinued operations.

The breakdown of Separation cash outflows for the year ended December 31, 2012 were as follows (in millions):

	Separation Cash Outflows
Capital distribution to A&B(1)	$	155.7
Separation costs(2)	8.6
Capitalized debt financing costs	1.9
Total cash outflow related to the Separation	$	166.2

(1) Includes a net distribution of $4.3 million that was paid out during the second half of 2012 related to the settlement of certain liabilities of the Former Parent Company.

(2) Of the $8.6 million in Separation costs, $2.5 million were recorded during the three months ended March 31, 2012, $5.8 million were recorded during the three months ended June 30, 2012, and $0.3 million were recorded during the three months ended September 30, 2012.

Other: Subsequent to the issuance of the June 30, 2012 Interim Condensed Consolidated Financial Statements, the Company identified misclassifications related to the presentation of the cash flows from operations related to its second China Long Beach Express Service (“CLX2”), and stock based compensation and has restated them in the Condensed Consolidated Statements of Cash Flows. For the six months ended June 30, 2012, the Company restated $6.0 million of cash flows related to CLX2 from “Cash Flows Provided by Operating Activities from Continuing Operations” to “Cash Flows Used in Operating Activities of Discontinued Operations” and restated $1.8 million related to stock based compensation from “Cash Flows from Investing Activities from Continuing Operations” to “Cash Flows Provided by Operating Activities from Continuing Operations.” The effects of these restatements increased “Cash Flows Provided by Operating Activities from Continuing Operations” by $7.8 million, increased “Cash Flows Used in Operating Activities of Discontinued Operations” by $6.0 million and decreased “Cash Flows Provided by Investing Activities from Continuing Operations” by $1.8 million for the six months ended June 30, 2012. The Company has determined that the foregoing restatements are not material to the previously issued interim Condensed Consolidated Financial Statements.

Condensed Consolidated Financial Statements:	6 Months Ended
Condensed Consolidated Financial Statements:	Jun. 30, 2013
Condensed Consolidated Financial Statements:
Condensed Consolidated Financial Statements:	(2) The Condensed Consolidated Financial Statements are unaudited. Due to the nature of the Company’s operations, the results for interim periods are not necessarily indicative of results to be expected for the year. These Condensed Consolidated Financial Statements reflect all normal recurring adjustments that are, in the opinion of management, necessary for fair presentation of the results of the interim periods; they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report filed on Form 10-K for the year ended December 31, 2012. The period end for Matson, Inc. is June 30. The period end for MatNav occurred on the last Friday in June, except for Matson Logistics Warehousing whose period closed on June 30. Amounts in the condensed consolidated financial statements and notes are presented in millions, but percentages were determined based on amounts before rounding. Accordingly, a recalculation of some percentages, if based on the reported data, may be slightly different.

Income Taxes:	6 Months Ended
Income Taxes:	Jun. 30, 2013
Income Taxes:
Income Taxes:	(10) Income Taxes: In connection with the Separation, the Company incurred certain financial advisory, legal, tax and other professional fees, a portion of which was not deductible under the tax regulations. Accordingly, the Company’s income taxes for the three and six months ended June 30, 2012 were impacted by approximately $1.2 million and $1.7 million, respectively, related to the non-deductibility of certain Separation costs. In connection with the Separation, the Company entered into a Tax Sharing Agreement with A&B that governs the respective rights, responsibilities and obligations of the companies after the Separation with respect to tax liabilities and benefits, tax attributes, tax contests and other tax sharing regarding U.S. Federal, state, local and foreign income taxes, other tax matters and related tax returns. A&B has liability to Matson with respect to Matson’s consolidated or combined federal, state, local and foreign income tax liability for the taxes that are attributed to A&B’s businesses and relative contribution to state and other taxable income of the Matson consolidated or combined group relating to the taxable periods in which A&B was a part of that group. The Tax Sharing Agreement specifies the portion, if any, of this tax liability for which Matson and A&B will bear responsibility, and Matson and A&B agreed to indemnify each other against any amounts for which they are not responsible. The Company makes certain estimates and judgments in determining income tax expense for financial statement purposes. These estimates and judgments are applied in the calculation of tax credits, tax benefits and deductions, and in the calculation of certain deferred tax assets and liabilities, which arise from differences in the timing of recognition of revenue and expense for tax and financial statement purposes. Deferred tax assets and deferred tax liabilities are adjusted to the extent necessary to reflect tax rates expected to be in effect when the temporary differences reverse. Adjustments to deferred tax assets and deferred tax liabilities may be required due to changes in tax laws and audit adjustments by tax authorities. To the extent adjustments are required in any given period, the adjustments would be included within the tax provision in the Condensed Consolidated Statements of Income and Comprehensive Income or Condensed Consolidated Balance Sheets.

Debt:	6 Months Ended
Debt:	Jun. 30, 2013
Debt:
Debt:	(11) Debt: The Company entered into a $375.0 million, five-year unsecured revolving credit facility with a syndicate of banks during the second quarter of 2012 in order to provide additional sources of liquidity for working capital requirements or investment opportunities on a short-term as well as longer-term basis. As of June 30, 2013, the used portion of the Company’s revolving credit facility was $6.8 million, all of which was from letters of credit. During the second quarter of 2012, Matson issued $170.0 million in unsecured, fixed rate, amortizing long-term debt. The debt was funded in three tranches; $77.5 million at an interest rate of 3.66% maturing in 2023, $55.0 million at an interest rate of 4.16% maturing in 2027, and $37.5 million at an interest rate of 4.31% maturing in 2032. The weighted average coupon and duration of the three tranches of debt are 3.97% and 9.3 years, respectively. The cash received from issuance was partially utilized to fund a contribution of cash from Matson to A&B under the terms of the Separation. Additionally, the Company negotiated the release of the MV Manulani as security for existing long-term debt of $56.0 million as part of the Company’s debt restructuring completed during the second quarter of 2012 to facilitate the Separation. This obligation was also moved from MatNav to Matson. Following the above mentioned debt financing transactions, all of Matson’s outstanding debt was unsecured, except for $70.4 million as of June 30, 2013. However, the debt is guaranteed by Matson’s significant subsidiaries. Capital Leases: As of June 30, 2013, Matson had obligations under its capital leases of $3.0 million consisting of specialized and standard containers used in the Company’s South Pacific service. Capital leases have been classified as current and long-term within the notes payable and current portion of long-term debt and long-term debt accounts, respectively, within the Company’s Condensed Consolidated Balance Sheet. Total debt was $292.4 million, as of June 30, 2013, compared with $319.1 million at the end of 2012. Principal negative covenants as defined in Matson’s five-year revolving credit facility (the “Credit Agreement”) and long-term fixed rate debt include, but are not limited to: a) The ratio of debt to consolidated EBITDA cannot exceed 3.25 to 1.00 for each fiscal four quarter period; b) The ratio of consolidated EBITDA to interest expense as of the end of any fiscal four quarter period cannot be less than 3.50 to 1.00; and c) The principal amount of priority debt at any time cannot exceed 20% of consolidated tangible assets; and the principal amount of priority debt that is not Title XI priority debt at any time cannot exceed 10% of consolidated tangible assets. Priority debt, as further defined in the Credit Agreement, is all debt secured by a lien on the Company’s assets or subsidiary debt. The Company was in compliance with these covenants as of June 30, 2013.

Description of Business: (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 08, 2012	Dec. 01, 2011 item	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012 item	Jun. 29, 2012
Description of Business
Number of vessels owned						18
Separation costs				$ 5.8			$ 8.3
SSAT \| Ocean Transportation
Description of Business
Ownership interest in SSAT (as a percent)						35.00%
Number of terminal facilities on which SSAT provides terminal and stevedoring services to Matnav and numerous carriers						6
Alexander & Baldwin
Description of Business
Number of publicly traded companies to be created after separation		2
Jones Act requirement to maintain status as U.S. citizen, maximum ownership interest permitted by non-U.S. citizens (as a percent)						22.00%
Number of shares of common stock of A&B received for each share upon separation									1
Maximum period during which services are to be provided under Transition Services Agreement	24 months
Number of cash outflow components								3
Capital distribution to A&B								155.7
Separation costs							8.3	8.6
Capitalized debt financing costs								1.9
Total cash outflow related to the Separation				161.6				166.2
Net distribution in relation to separation								4.3
Separation costs, net of tax			$ 0.3	$ 5.8	$ 2.5

Description of Business: (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Other
Cash Provided by Operating Activities from Continuing Operations	$ 79.5	$ 28.5
Cash Flow Used in Operating Activities from Discontinued Operations		(30.3)
Cash Flows Used in Investing Activities from Continuing Operations	(16.5)	7.9
Continuing operations \| Restatement impact
Other
Cash Provided by Operating Activities from Continuing Operations		7.8
Cash Flow Used in Operating Activities from Discontinued Operations		(6.0)
Cash Flows Used in Investing Activities from Continuing Operations		(1.8)
Continuing operations \| Restatement impact \| CLX2
Other
Cash Provided by Operating Activities from Continuing Operations		6.0
Continuing operations \| Restatement impact \| Stock Based Compensation
Other
Cash Provided by Operating Activities from Continuing Operations		$ 1.8

Commitments, Guarantees and Contingencies: (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Standby letters of credit
Commitments, Guarantees and Contingencies
Commitments and financial arrangements	$ 6.8
Letters of credit amount that enables qualification as self-insurance and other insurance programs	5.6
Letters of credit to support credit enhancement needs	1.2
Performance and customs bonds
Commitments, Guarantees and Contingencies
Commitments and financial arrangements	20.4
U.S. Customs Bonds	19.2
Bonds related to transportation and other matters	1.2
Benefit plan withdrawal obligations
Commitments, Guarantees and Contingencies
Multiemployer Plan Withdrawal Obligation	$ 102.1

Share-Based Compensation: (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Non-qualified stock options
Activity in the entity's stock option plans
Granted (in shares)	0
Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	1,353
Exercised (in shares)	(48)
Forfeited and expired (in shares)	(8)
Outstanding, end of period (in shares)	1,297
Exercisable (in shares)	1,095
Weighted average exercise price
Outstanding, weighted average exercise price, beginning of period (in dollars per share)	$ 21.15
Exercised, weighted average exercise price (in dollars per share)	$ 17.41
Forfeited and expired, weighted average exercise price (in dollars per share)	$ 21.74
Outstanding, weighted average exercise price, end of period (in dollars per share)	$ 21.28
Exercisable, weighted average exercise price (in dollars per share)	$ 21.14
Outstanding, weighted average contractual life	5 years 1 month 6 days
Exercisable, weighted average contractual life	4 years 7 months 6 days
Outstanding, aggregate intrinsic value (in dollars)	$ 4,897
Exercisable, aggregate intrinsic value (in dollars)	$ 4,307
2007 Plan \| Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	954
Exercised (in shares)	(42)
Forfeited and expired (in shares)	(6)
Outstanding, end of period (in shares)	906
Exercisable (in shares)	704
Predecessor Plans 1998 Plan \| Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	253
Forfeited and expired (in shares)	(2)
Outstanding, end of period (in shares)	251
Exercisable (in shares)	251
Predecessor Plan 1998 Directors' Plan \| Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	146
Exercised (in shares)	(6)
Outstanding, end of period (in shares)	140
Exercisable (in shares)	140

Share-Based Compensation: (Details 2) (2007 Plan, USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Restricted Stock Units
Non-vested restricted stock unit activity
Outstanding, beginning of period (in shares)	356
Granted (in shares)	367
Vested (in shares)	(152)
Outstanding, end of period (in shares)	571
Weighted Average Grant-Date Fair Value
Outstanding, weighted average grant-date fair value, beginning of period (in dollars per share)	$ 17.97
Granted, weighted average grant-date fair value (in dollars per share)	$ 26.64
Vested, weighted average grant-date fair value (in dollars per share)	$ 17.20
Cancelled, weighted average grant-date fair value (in dollars per shares)	$ 0.00
Outstanding, weighted average grant-date fair value, end of period (in dollars per shares)	$ 23.76
Vesting period of awards granted	3 years
Performance-Based Restricted Stock Units
Weighted Average Grant-Date Fair Value
Vesting period of awards granted	3 years
Average ROIC, period for measurement	3 years
TSR modifier, period for measurement	3 years
Weighted percentage of the entities comprising each index considered for calculation of total shareholder return	50.00%
Continuous service period for vesting of shares issuable on the basis of the performance-vesting criteria	3 years

Pension and Post-retirement Plans: (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	$ 1.4	$ 1.3
Interest cost	4.3	4.5
Expected return on plan assets	(5.9)	(5.3)
Amortization of net loss	3.4	(0.7)
Amortization of prior service cost	(1.1)	4.3
Net periodic benefit cost	2.1	4.1
Estimated full year cash contributions to pension plan	3.5
Estimated contributions to be made	3.5
Post-retirement Benefits
Components of Net Periodic Benefit Cost
Service cost	0.5	0.4
Interest cost	1.1	1.1
Amortization of net loss	0.2
Amortization of prior service cost		0.9
Net periodic benefit cost	$ 1.8	$ 2.4

Fair Value Measurements: (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Carrying value
Fair value of financial instruments
Cash & cash equivalents	$ 39.1	$ 19.9
Accounts and notes receivable	179.6	174.7
Variable rate debt		24.0
Fixed rate debt	289.4	295.1
Fair value
Fair value of financial instruments
Cash & cash equivalents	39.1	19.9
Accounts and notes receivable	179.6	174.7
Variable rate debt		24.0
Fixed rate debt	300.6	316.8
Fair value \| Quoted Prices in Active Markets (Level 1)
Fair value of financial instruments
Cash & cash equivalents	39.1	19.9
Fair value \| Significant Observable Inputs (Level 2)
Fair value of financial instruments
Accounts and notes receivable	179.6	174.7
Variable rate debt		24.0
Fixed rate debt	$ 300.6	$ 316.8

Debt: (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended						3 Months Ended		6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Matson South Pacific	Jun. 30, 2012 Unsecured debt item	Jun. 30, 2012 Unsecured debt, tranche maturing in 2023	Jun. 30, 2012 Unsecured debt, tranche maturing in 2027	Jun. 30, 2012 Unsecured debt, tranche maturing in 2032	Jun. 30, 2013 Secured debt	Jun. 30, 2012 Secured debt	Jun. 30, 2012 Unsecured revolving credit facility	Jun. 30, 2013 Unsecured revolving credit facility	Jun. 30, 2013 Unsecured revolving credit facility Maximum	Jun. 30, 2013 Unsecured revolving credit facility Minimum
Debt
Maximum borrowing capacity										$ 375.0
Credit facility term										5 years
Used portion of credit facility											6.8
Debt issued				170.0	77.5	55.0	37.5
Number of tranches				3
Interest rate (as a percent)					3.66%	4.16%	4.31%
Weighted average interest rate (as a percent)				3.97%
Weighted average period				9 years 3 months 18 days
Release of MV Manulani as security for debt									56.0
Secured Debt								70.4
Capital leases			3.0
Total Debt	$ 292.4	$ 319.1
Debt covenant, required ratio of debt to consolidated EBITDA												3.25
Ratio of consolidated EBITDA to interest expense													3.50
Debt covenant, required principal amount of priority debt as a percentage of consolidated tangible assets												20.00%
Debt covenant, required principal amount of priority debt (excluding Title XI) as a percentage of consolidated tangible assets												10.00%