Unrecorded Unconditional Purchase Obligation Purchases Payment Period Cost for construction of containerships, including preparation of vessels for service payment period Represents the period over which the purchase price of unconditional purchase obligation will be paid. Unrecorded Unconditional Purchase Obligation Percentage Payment Due upon Execution of Agreement Unrecorded unconditional purchase obligation execution of ship building agreement (as a percent) Represents the percentage of fixed and determinable portion of the unrecorded unconditional purchase obligation due upon execution of the ship building agreement. Represents the percentage of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second and third fiscal year following the latest fiscal year. Unrecorded Unconditional Purchase Obligation Percentage Payment Due on Second and Third Anniversary Unrecorded unconditional purchase obligation due in year 2015 and 2016 (as a percent) Unrecorded Unconditional Purchase Obligation Percentage Payment Due on Fourth and Fifth Anniversary Unrecorded unconditional purchase obligation due in year 2017 and 2018 (as a percent) Represents the percentage of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth and fifth fiscal year following the latest fiscal year. Aker Philadelphia Shipyard Inc [Member] APSI Represents information pertaining to Aker Philadelphia Shipyard, Inc., a counterparty to the agreement. Represents the senior unsecured long-term debt of the entity. Senior Unsecured Long Term debt [Member] Senior unsecured long-term debt Term of Unrecorded Unconditional Purchase Obligation Option Term Term of option to contract with third party for the construction of additional Aloha-class vessels Period of time that the entity has the option to contract for additional quantities, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes. Unrecorded Unconditional Purchase Obligation Additional Quantity Maximum Maximum number of additional Aloha-class vessels Maximum number of additional units that may be acquired, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes. Debt Instrument Amortization Period Start Period before amortization of long-term debt begins Period of time between issuance and amortization of debt instrument begins, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Non Qualified Stock Options [Member] Non-qualified stock options Represents information pertaining to the non-qualified stock options entered into by the entity. Amendment Description Ocean Transportation This element represents revenue earned primarily through the carriage of containerized freight between various US Pacific Coast, Hawaii, Guam, Micronesia, China and other Pacific island ports. Ocean transportation Ocean transportation revenue Amendment Flag Logistics Services This element represents revenue from rail intermodal, highway brokerage and warehousing. Logistics Logistics services Separation Cost Professional fees and other costs associated with the spin-off of the Company's non-transportation segments. Separation costs Separation costs Deposits into Capital Construction Fund The cash outflow from making deposits into the capital construction fund to be used for qualified purchases under provisions of Merchant Marine Act, 1936, as amended. Deposits into Capital Construction Fund Eligible accounts receivable assigned to the Capital Construction Fund Deposits made to the capital construction fund The cash inflow from withdrawals from the capital construction fund to be used for qualified purchases under provisions of Merchant Marine Act, 1936, as amended. Withdrawals from Capital Construction Fund Withdrawals from Capital Construction Fund Payments for Distribution upon Separation Total cash outflows in relation to the separation from the Former Parent Company during the reporting period. Contribution to A&B upon Separation Contributions to A&B Separation Cost Capital Distributions Capital contribution to A&B Represents capital distributions made as part of the separation from the entity's former parent. Document and Entity Information Performance and Customs Bonds [Member] Performance and customs bonds An agreement (contract) that requires the guarantor to make payments to a guaranteed party based on another entity's failure to perform under an obligating agreement, and agreements (contracts) that contingently require the guarantor to make payments of principal and interest to a lender on another party's debt if that party fails to comply with the terms of the borrowing arrangement. Term Loans Payable 5.79 Percent Through 2020 [Member] Represents the 5.79 percent term loans payable through 2020. 5.79%, payable through 2020 Term Loans Payable 3.66 Percent Through 2023 [Member] Represents the 3.66 percent term loans payable through 2023. 3.66%, payable through 2023 Represents the 4.16 percent term loans payable through 2027. 4.16%, payable through 2027 Term Loans Payable 4.16 Percent Through 2027 [Member] Term Loans Payable 4.31 Percent Through 2032 [Member] Represents the 4.31 percent term loans payable through 2032. 4.31%, payable through 2032 Plan 2007 [Member] 2007 Plan The current stock option plan in effect. This is an equity-based arrangement in which one or more employees and/or Directors receive shares of stock options. Represents information pertaining to 1998 plan. 1998 Plan Plan 1998 [Member] Represents information pertaining to 1998 predecessor plans. Predecessor Plans 1998 Plan Predecessor Plans 1998 Plan [Member] The previous stock option plan for Directors', which was replaced by the 2007 Plan. This is an equity-based arrangement in which one or more Directors receive shares of stock options. Predecessor Plan 1998 Directors Plan [Member] Predecessor Plan 1998 Directors' Plan Current Fiscal Year End Date Award Type [Axis] Performance Vesting Represents a share based compensation award with vesting based on achievement of performance conditions. Vesting Based on Performance [Member] Number of publicly traded companies to be created after separation Represents the number of companies to be created after separation for which the board of directors unanimously approved a plan to pursue the separation. Number of Companies to be Created after Separation Dry Dock Interval, Minimum Dry-dock interval, minimum Represents minimum period for dry-docking. Represents maximum period for dry-docking. Dry Dock Interval, Maximum Dry-dock interval, maximum Income from continuing operations, Basic (in shares) Represents weighted average number of shares from continuing operations for calculating basic earnings per share. Weighted Average Number of Shares Outstanding from Continuing Operations, Basic Weighted Average Number of Shares Outstanding from Discontinued Operations Basic Loss from discontinued operations, Basic (in shares) Represents weighted average number of shares from discontinued operations for calculating basic earnings per share. Weighted Average Number of Shares Outstanding from Continuing Operations Diluted Income from continuing operations, Diluted (in shares) Represents weighted average number of shares from continuing operations for calculating diluted earnings per share. Weighted Average Number of Shares Outstanding from Discontinued Operations Diluted Loss from discontinued operations, Diluted (in shares) Represents weighted average number of shares from discontinued operations for calculating diluted earnings per share. Performance Based Restricted Stock Units [Member] Performance-based restricted stock units (RSUs) as awarded by a company to their employees as a form of incentive compensation. Performance-Based Restricted Stock Units Non-vested stock/Restricted stock units The combination of non-vested stock and restricted stock units. Non Vested Stock and Restricted Stock Units [Member] Share-based expense (net of estimated forfeitures) Share Based Expense Net of Estimated Forfeitures [Abstract] Document Period End Date CLX2 Service Matson's second China service. CLX2 Service [Member] CLX2 A&B Represents Alexander & Baldwin, the former parent company of MatNav. Alexander and Baldwin Inc [Member] Alexander & Baldwin Ssa Terminals Llc [Member] SSAT Represents SSA Terminals, LLC (SSAT). Container and charter liabilities Container and charter liabilities associated with discontinued operations as of the balance sheet date. Container and Charter Liabilities [Member] Other contractual liabilities associated with discontinued operations as of the balance sheet date. Other Contractual Liabilities [Member] Other contractual liabilities Income Statement, Balance Sheet and Additional Disclosures by Liabilities Type, Including Discontinued Operations [Axis] Listing of liabilities by contractual agreements associated with discontinued operations. Consist of categories of liabilities by contractual arrangements associated with discontinued operations. Disposal Groups, Including Discontinued Operations, Type of Liabilities [Domain] Number of Vessels Used in Discontinued Operation The number of vessels used in the discontinued operation, for which the Company had established and approved plans to return to lessors or sub-charter. Number of vessels used in discontinued operation Cash Outflow Sources Represents the number of sources providing cash outflows to the reporting entity as a result of a separation agreement. Number of cash outflow components Entity [Domain] Number of Vessels Expected to be Sub Chartered The number of vessels used in the discontinued operation expected to be sub-chartered until returned to lessors in July 2012. Number of vessels expected to be sub-chartered Number of Vessels Returned to Lessors The number of vessels used in the discontinued operation returned to the lessors pursuant to the terms of the one-year charter contracts for these vessels. Number of vessels returned to lessors Duration of Charter Contracts Duration of charter contracts The duration (in years) of the charter contracts for vessels used in the discontinued operation in in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Unsecured Long-term Debt, Number of Tranches Number of tranches Represents the number of tranches in which the unsecured long-term debt funded. Weighted average period Represents the weighted average period of the tranches of unsecured long-term debt in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Long-term Debt Weighted Average Period Liabilities of Disposal Group, Including Discontinued Operation, Current [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Liabilities of Disposal Group (Including Discontinued Operation) Amount paid for the liabilities associated with discontinued operations during the period. Disposal Group Including Discontinued Operations Amounts Paid Amounts paid Ocean transportation Ocean Transportation Segment [Member] Represents information pertaining to ocean transportation segment that carries freight between various U.S. Pacific Coast, major Hawaii ports, Guam, China and other Pacific ports and provides terminal, stevedoring and container equipment management services in Hawaii. Ocean Transportation Logistics Services Segment [Member] Represents information pertaining to logistics services segment that arranges domestic and international rail intermodal service, long-haul and regional highway brokerage, specialized hauling, flat-bed and project work, less-than-truckload, expedited freight services, and warehousing and distribution services. Logistics Logistics services Number of vessels owned Represents the number of ships owned by the entity. Number of Ships Owned Number of terminal facilities on which SSAT provides terminal and stevedoring services to Matnav and numerous carriers Represents the number of ports terminal facilities on which the investee provides terminal and stevedoring services. Number of Terminal Facilities on which Investee Provides Terminal and Stevedoring Services Maximum Ownership Percentage that May be Owned by Non US Citizens Jones Act requirement to maintain status as U.S. citizen, maximum ownership interest permitted by non-U.S. citizens (as a percent) Represents the maximum permitted ownership percentage by non-U.S. citizens in order to maintain the entity's status as a U.S. citizen under certain U.S. maritime and vessel documentation laws, popularly referred to as the Jones Act. Maximum Period During which Services are to be Provided Maximum period during which services are to be provided under Transition Services Agreement Represents the period during which services are to be provided under the agreement entered into by the entity in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Payments Related to Separation Total cash outflow related to the Separation Represents the total cash outflows in relation to the separation from the reporting entity during the period. Separation Costs Net of Tax Separation costs, net of tax Represents the professional fees and other costs, net of tax, associated with the spin-off of the entity's non-transportation segments. Contributions received Contribution from the Former Parent Company Dividends Received from Former Parent Represents dividends received from the former parent company prior to the separation. Related Party Transaction Net Expenses from Transactions with Related Party Net expense recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. Related party expense, net Payments for Distribution Expected to be Incurred in Relation to Separation Net distribution in relation to separation Represents distribution payable for the settlement of certain liabilities of the former parent company. Distribution to Former Parent Company from issuance of capital stock This element represents cash outflows from distribution to former parent company for proceeds from issuance of capital stock. Distribution to Former Parent Company for Proceeds from Issuance of Common Stock Options cancelled in connection with separation (in shares) Represents options cancelled in connection with separation. Share Based Compensation Arrangement by Share Based Payment Award, Options, Cancelled upon Separation Represents non-vested restricted stock units cancelled in connection with separation. Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Cancelled upon Separation Non-vested restricted stock units cancelled in connection with separation (in shares) Proceeds from and Distributions to A and B from Issuance of Capital Stock The total cash flow related to the issuance of stock to A&B. Proceeds from and contributions to A&B from issuance of capital stock Payments of Dividends to Parent Represents the cash outflow in the form of ordinary dividends to parent, generally out of earnings. Distribution paid to Former Parent Company Payments for Settlement of Liabilities in Relation to Separation Represents the contribution payable for the settlement of certain liabilities of the former parent company. Net contribution in relation to separation Capital Expenditures and Dry Docking Incurred but Not Yet Paid Capital expenditures included in accounts payable and accrued liabilities Represents the future cash outflow to pay for purchases of fixed assets and dry-docking that have occurred. Schedule reflecting information about the organization of the business. Description of Business [Table] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Line items represent description about business. Description of Business [Line Items] DESCRIPTION OF THE BUSINESS Unsecured debt, tranche maturing in 2023 Tranche Maturing in 2023 [Member] Unsecured debt tranche maturing in 2023. Unsecured debt, tranche maturing in 2027 Tranche Maturing in 2027 [Member] Unsecured debt tranche maturing in 2027. Unsecured debt, tranche maturing in 2032 Tranche Maturing in 2032 [Member] Unsecured debt tranche maturing in 2032. Line of Credit Facility Ratio of Debt to Consolidated Ebitda Compliance Represents the actual ratio used to determine compliance with the ratio of debt to consolidated EBITDA financial covenant of the line of credit facility. Debt covenant, required ratio of debt to consolidated EBITDA Line of Credit Facility Consolidated Interest Coverage Ratio Compliance Represents the actual consolidated interest coverage ration used to determine compliance with the financial covenant of the line of credit facility. Ratio of consolidated EBITDA to interest expense Represents the actual amount of principal amount of priority debt as a percentage of consolidated tangible assets used to determine compliance with the financial covenant of the line of credit facility. Debt covenant, required principal amount of priority debt as a percentage of consolidated tangible assets Line of Credit Facility Debt as Percentage of Assets Compliance Debt Instrument Number of Periodic Payment Number of semi-annual payments Represents the number of periodic payments of the debt instrument. Represents the number of separate incentive compensation programs within a incentive compensation plan. Number of Separate Incentive Compensation Programs Number of separate incentive compensation programs Share Based Compensation Arrangement by Share Based Payment Award Number of Share Based Compensation Plans Number of share based compensation plans within the entity's incentive compensation programs Represents the number of share based compensation plans utilized by the entity. Line of Credit Facility Covenant Principal Amount of Other Priority Debt as Percentage of Consolidated Tangible Assets Debt covenant, required principal amount of priority debt (excluding Title XI) as a percentage of consolidated tangible assets Represents the principal amount of other debt, which is not Title XI priority debt as a percentage of consolidated tangible assets. Vessels [Member] Vessels Assets commonly used for the storage of liquids. Terminal Facilities and Other Property [Member] Terminal facilities and other property Represents information pertaining to the terminal facilities and the other property of the entity. CAPITAL CONSTRUCTION FUND Maximum Period to Commit Fund Deposits for Qualified Purposes Maximum period to commit fund deposits for qualified purposes Represents the maximum period from the date of deposit to commit deposits for qualified purposes. The period over which deposits not committed for qualified purposes longer than the maximum specified period from the date of deposit will be treated as non-qualified withdrawals. Period over which Deposits will be Treated as Non Qualified Withdrawals Period over which deposits will be treated as non-qualified withdrawals Accrued Withdrawal from Capital Construction Fund Qualified withdrawals from the CCF The amount of accrued qualified withdrawals from the Capital Construction Fund that are reflected as receivables on the consolidated balance sheets. Accrued Deposits to Capital Construction Fund Deposits to the CCF by way of assigned eligible accounts receivable The amount of accrued deposits from certain qualified earnings to the Capital Construction Fund that are reflected as obligations on the consolidated balance sheets. Entity Well-known Seasoned Issuer Net Balance of Amounts Accrued for Capital Construction Fund Net balance of amounts accrued for CCF The net balance of amount accrued for withdrawal and deposits to the Capital Construction Fund, reflected in the consolidated balance sheets. Entity Voluntary Filers Terminal Facility [Member] Terminal Facility Represents information pertaining to the terminal facility of the entity. Entity Current Reporting Status Represents the term during which the lease or group of leases are set to expire. Lease Expiration Term Term of existing operating leases Entity Filer Category Amount of expenses incurred for the liabilities associated with discontinued operations during the period. Expenses incurred Disposal Group Including Discontinued Operations Expenses Incurred Entity Public Float Disclosure of accounting policy for risks and uncertainties. Risks and Uncertainties [Policy Text Block] Risks and Uncertainties Entity Registrant Name Revenue Recognition and Expenses [Policy Text Block] Recognition of Revenues and Expenses Disclosure of accounting policy for revenue recognition and expenses. Entity Central Index Key Non Voyage Costs [Policy Text Block] Non-voyage Costs: Disclosure of accounting policy for non-voyage costs. Disclosure of accounting policy for the rounding of amounts in the consolidated financial statements. . Rounding [Policy Text Block] Rounding Property, Plant and Equipment Estimated Useful Life [Table Text Block] Schedule of estimated useful lives of property and equipment Tabular disclosure of estimated useful lives of long-lived, physical assets that are used in the normal conduct of business to produce goods and services. Terminal Facilities [Member] Terminal Facilities Represents information pertaining to the terminal facilities of the entity. Entity Common Stock, Shares Outstanding Schedule of Amounts Recognized in Balance Sheet and Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of amounts recognized on the consolidated balance sheets and in accumulated other comprehensive loss Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans that are recognized in the balance sheet, showing separately the assets and current and noncurrent liabilities (if applicable) recognized and that are in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule of components of the net periodic benefit cost and other amounts recognized in other comprehensive income (loss) for the defined benefit pension plans and the post-retirement health care and life insurance benefit plans Tabular disclosure for pension plans and/or other employee benefit plans of the components of net benefit costs including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments, and the tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period, and reclassification adjustments of other comprehensive income (loss) for the period. Schedule of years contributions to plan exceeded more than 5 percent of total contributions Tabular disclosure of years contributions by entity to plan exceeded more than five percent of the total contributions for the multiemployer plans. Schedule of Multiemployer Plans Year Contributions to Plan Exceeded More than Five Percent of Total Contributions [Table Text Block] Domestic Equity Securities [Member] Domestic equity securities This category includes information about ownership interests or the right to acquire ownership interests in domestic entities. International equity securities This category includes information about ownership interests or the right to acquire ownership interests in foreign entities. International Equity Securities [Member] Other and cash This category includes information about other assets and currency on hand as well as demand deposits with banks or financial institutions. Other Assets and Cash [Member] The percentage of one-year returns (losses) on pension plan assets. Defined Benefit Plan One Year Return on Plan Assets One year returns (losses) on plan assets (as a percent) Defined Benefit Plan Three Year Return on Plan Assets Three year returns (losses) on plan assets (as a percent) The percentage of three-year returns (losses) on pension plan assets. Five year returns (losses) on plan assets (as a percent) The percentage of five-year returns (losses) on pension plan assets. Defined Benefit Plan Five Year Return on Plan Assets Long-term average return on plan assets since inception (as a percent) The percentage of long-term average return on pension plan assets. Defined Benefit Plan Long Term Average Return on Plan Assets This category includes information about ownership interests or the right to acquire ownership interests in the United States large capitalization entities. US Equity Securities Large Capitalization [Member] U.S. large-cap US Equity Securities Mid and Small Capitalization [Member] U.S. mid- and small-cap This category includes information about ownership interests or the right to acquire ownership interests in the United States mid and small capitalization entities. International Equity Securities Large Capitalization [Member] International large-cap This category includes information about ownership interests or the right to acquire ownership interests in international large capitalization entities. International Equity Securities Mid Capitalization [Member] International mid-cap This category includes information about ownership interests or the right to acquire ownership interests in international mid capitalization entities. Investment Grade US Corporate Bonds [Member] Investment grade U.S. corporate bonds This category includes information about the United States investment grade corporate bonds. High-yield U.S. corporate bonds This category includes information about United States high-yield corporate bonds. High Yield US Corporate Bonds [Member] Insurance contracts This category includes information about investments in insurance contracts. Insurance Insurance Contracts [Member] Document Fiscal Year Focus Qualified Plans Represents qualified defined benefit pension plans. Qualified Pension Plans [Member] Document Fiscal Period Focus Defined Benefit Plan, Plan Amendments and Curtailments Amendments/Curtailments The net amount of increase or decrease due to (i) a change in the terms of an existing plan or the initiation of a new plan and (ii) an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Defined Benefit Plan Unrecognized Gains (Losses) Amortization Period Amortization period of unrecognized gains and losses Represents the period over which the unrecognized gains and losses will be amortized. Nonqualified Pension Plans [Member] Non-qualified Pension Plans Represents non-qualified defined benefit pension plans. Non-qualified Pension Benefits Defined Benefit Plan Employer Matching Contribution Percent Employer matching contribution to MEBA Pension Trust (as a percent) Represents the percentage of employees' gross pay for which the employer contributes a matching contribution to a defined benefit plan. The total amount of net periodic benefit cost and net of tax amount of pension and other postretirement benefit plans (gain) loss included in accumulated other comprehensive income (loss). Defined Benefit Plan Amount Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss) Net of Tax Total recognized in net periodic benefit cost and other comprehensive income Nonqualified and Postretirement Benefit Plans [Member] Non-qualified pension benefits and postretirement benefits Represents information pertaining to the non-qualified and post-retirement benefit plans of the entity. The general categories used to describe plan funding status. Plans Zone [Domain] Red Zone [Member] Red Zone Represents information about the red (critical) zone. Represents information about the yellow (endangered) zone. Yellow Zone [Member] Yellow Zone Represents information about the green (healthy) zone. Green Zone [Member] Green Zone Hawaii Stevedoring Multiemployer Retirement Plan [Member] Hawaii Stevedoring Multiemployer Retirement Plan Represents information pertaining to Hawaii Stevedoring Multiemployer Retirement Plan. Legal Entity [Axis] Master Mates and Pilots Pension Plan [Member] Master, Mates and Pilots Adjustable Pension Plan Represents information pertaining to Master, Mates and Pilots pension plan. Document Type Hawaii Terminals Multiemployer Pension Plan [Member] Hawaii Terminals Multiemployer Pension Plan Represents information pertaining to Hawaii Terminals Multiemployer Pension Plan. SIGNIFICANT ACCOUNTING POLICIES OCU Trust Pension Represents information pertaining to OCU Trust Pension. OCU Trust Pension Plan [Member] Other Pension Plans [Member] Other Plans Represents information pertaining to other pension plans. MEBA Pension Trust [Member] MEBA Pension Trust - Defined Benefit Plan Represents information pertaining to MEBA Pension Trust. Collective Bargaining Arrangement Contract A [Member] Contract A Represents information pertaining to Contract A collective bargaining arrangement. Collective Bargaining Arrangement Contract B [Member] Contract B Represents information pertaining to Contract B collective bargaining arrangement. Number of Multiemployer Plans Number of multiemployer plans Represents the number of multiemployer plans in which the entity participates. Multiemployer Plan Funded Percentage Funded status of multiemployer plan (as a percent) Represents the funded status of a multiemployer plan. Multiemployer Plan Period for Amortization of Losses Amortization period provided by Public Law to amortize losses The amortization period provided by Public Law 111-192, section 211 for amortization of losses. Multiemployer Plans Number of Collective Bargaining Agreements Number of collective-bargaining agreements based upon vessels that require contributions Represents the number of collective-bargaining agreements, in which the entity is a party. Collective Bargaining Arrangement Number of Vessels Covered Number of vessels covered Represents the number of vessels covered relating to the collective-bargaining arrangements. Schedule of Defined Contribution Benefit Plans Disclosures [Table] Disclosures about defined contribution plans. Defined Contribution Benefit Plans Disclosure Benefit Plans [Axis] Disclosures about defined contribution plan. Defined Contribution Benefit Plans [Domain] The name of the defined contribution plan. Defined Contribution 401 (K) Plan [Member] 401(k) plan Represents the 401(k) defined contribution plan of the entity. Defined Contribution Benefit Plans Disclosures [Line Items] Defined Contribution Plans Defined Contribution Plan Employer Contribution Percentage Contribution percentage The contribution, under the defined contribution plan, made by the employer as a percentage when a minimum threshold of the entity's performance is achieved. Secured Bonds Payable 5.34 Percent Through 2028 [Member] 5.34% payable through 2028 Represents the 5.34% secured notes payable through 2028. Represents the 5.27% secured notes payable through 2029. Secured Bonds Payable 5.27 Percent Through 2029 [Member] 5.27% payable through 2029 Notes Payable 4.79 Series B [Member] 4.79% payable (Series B Notes) Represents the 4.79% notes payable (Series B Notes). Represents the Senior Secured Reducing Revolving Credit Facility of the entity. Senior Secured Reducing Revolving Credit Facility [Member] Senior Secured Reducing Revolving Credit Facility Information by program name pertaining to equity-based compensation arrangements. Schedule of Share Based Compensation Arrangement by Share Based Payment Award, Program [Axis] Share Based Compensation Arrangements by Share Based Payment Award, Program [Domain] Name of the equity-based compensation arrangement program. Share Based Compensation Arrangement by Share Based Payment Award, Award Exercisable Period Exercisable period Period which an employee's right to exercise an award. Share Based Compensation Arrangements by Share Based Payment Award Period of Time within to Exercise Option for Reload Feature Eligibility Period of time within for an option to be exercised for eligibility for reload feature and new stock option grant The period of time within for an option to purchase shares is exercised for eligibility to participate in a reload feature if payment is made in shares of the entity's stock. Share Based Compensation Arrangements by Share Based Payment Award Ratio to Convert Original Option Price under Reload Feature Ratio to convert original option price under reload feature The ratio to convert the original option price when the reload feature is utilized. Discretionary Grant Program [Member] Discretionary Grant Program Represents information pertaining to the Discretionary Grant Program of the entity. Stock Issuance Program [Member] Stock Issuance Program Represents information pertaining to the Stock Issuance Program of the entity. Represents information pertaining to the Automatic Grant Program of the entity. Automatic Grant Program [Member] Automatic Grant Program Deferred Tax Liabilities Amortization Amortization Amount of deferred tax liability attributable to taxable temporary differences from amortization. Dry-docking Dry Docking [Abstract] Deferred Tax Liabilities Deposits Amount of deferred tax liability attributable to taxable temporary differences from deposits made to a Capital Construction Fund established under provisions of the Merchant Marine. Capital Construction Fund Parent Company Exclusive of Sister Company [Member] Parent Company excluding A&B. Parent Company Exclusive Of A&B Schedule of Allocation of Plan Assets Percent [Table Text Block] Tabular disclosure of the major categories of plan assets as a percentage of pension plans and/or other employee benefit plans. The information includes the target allocation of plan assets. Schedule of the Company's target and actual weighted-average asset allocations Income (Loss) from Continuing Operations Per Share [Abstract] Income From Continuing Operations, Earnings Per Share: Reef Shipping Company [Member] Reef Shipping Represents information pertaining to Reef Shipping Company. International small-cap This category includes information about ownership interests or the right to acquire ownership interests in international small capitalization entities. International Equity Securities Small Capitalization [Member] Number of shares to be issued upon exercise of outstanding options, warrants and rights Represents the number of shares to be issued upon exercise of outstanding options, warrants and rights under the equity-based compensation plan. Share Based Compensation Arrangement by Share Based Payment Award Number of Shares to be Issued upon Exercise of Outstanding Options Warrants and Rights Deferred dry-docking payments Increase (Decrease) in Deferred Dry Docking Payments Represents the increase (decrease) during the reporting period in the value of dry-docking payments made during the current reporting period for benefits that will be received over a period of years. Deferred dry-docking amortization Increase (Decrease) in Deferred Dry Docking Amortization Represents the increase (decrease) during the reporting period in the value of dry-docking amortization during the current reporting period for benefits that will be received over a period of years. Defined Contribution Plan Profit Sharing Expense Profit sharing expense recorded Represents the amount of the profit sharing expenses recorded during the period for defined contribution plans. Schedule of Depreciation Expenses of Property, Plant and Equipment [Text Block] Tabular disclosure of depreciation expenses of property, plant and equipment. Schedule of depreciation expense Number of single-employer defined benefit pension funded plans Single Employer Defined Benefit Plan Funded Number Represents the number of single employer defined benefit pension funded plans. Represents the number of outside directors covered under the frozen non-qualified pension plan. Number of Outside Directors Covered under Frozen Non Qualified Pension Plan Number of outside directors covered under the frozen non-qualified pension plan Income Tax Indemnification Unrecognized tax benefit increase due to Former Parent Company indemnification plan The gross amount to be received under indemnification plan. Number of shares that can be purchased with the annual option Gross number of share that can be purchased with the annual option. Share Based Compensation Arrangement, by Share Based Payment Award, Annual Option Share Based Compensation Arrangement by Share Based Payment Award, Measurement Period for Average Annual Return on Invested Capital Average ROIC, period for measurement Represents information pertaining to the period over which average annual return on invested capital is measured in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Share Based Compensation Arrangement by Share Based Payment Award, Measurement Period for Total Shareholder Return TSR modifier, period for measurement Represents information pertaining to the period over which total shareholder return is measured in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Represents information pertaining to the weighted percentage of the entities comprising each index considered for calculation of total shareholder return under share-based compensation. Share Based Compensation Arrangement by Share Based Payment Award Percentage Weight of Each Index Considered for Total Shareholder Return Weighted percentage of the entities comprising each index considered for calculation of total shareholder return Matson South Pacific Represents information pertaining to Matson South Pacific. Matson South Pacific Business [Member] Trade Accounts Receivable Assigned to Capital Construction Fund Eligible accounts receivable assigned to the Capital Construction Fund Represents the amount of accounts receivable assigned to Capital Contribution Fund during the period. Undivided interest in trade receivables assigned to the capital construction fund MatNav Represents information pertaining to Matson Navigation Company, Inc., a wholly-owned subsidiary of the reporting entity. Matson Navigation Company Inc [Member] Reportable Segment [Member] Represents a component of the entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reportable segments Transportation and other bonds Represents an obligation arising from a three-party agreement, which legally binds together a principal who needs the bond, an obligee who requires the bond and a surety entity, which sells the bond related to transportation and other matters guarantee. Surety Bond 1 [Member] Schedule of Earnings Per Share [Table] The table contains disclosure pertaining to the entity's basic earnings per share. Earnings Per Share [Line Items] Earnings Per Share Time Based Restricted Stock Units [Member] Time-Based Restricted Stock Units Time-based restricted stock units (RSUs) as awarded by a company to their employees as a form of incentive compensation. Number of Chartered Vessels Number of chartered vessels Represents the number of chartered vessels. Legal Contingencies [Policy Text Block] Legal Contingencies Disclosure of accounting policy for legal contingencies. Accounts payable Accounts Payable, Current Number of Dry Docking Inspections to be Made within Specified Period Number of dry-docking inspections to be made within a specified period Represents the number of dry-docking inspections to be made within a specified period. Period within which Specified Dry Docking Inspections to be Made Period within which number of specified dry-docking inspections to be made Represents the period within which number of specified dry-docking inspections to be made. Number of Non US Flag Vessels in Operation Number of non-U.S. flag vessels in operations Represents the number of non-U.S. flag vessels operated by the entity. Number of Non US Flag Vessels Owned Number of non-U.S. flag vessels owned Represents the number of non-U.S. flag vessels owned by the entity. Number of Non US Flag Vessels under Bareboat Charters Number of non-U.S. flag vessels under bareboat charter Represents the number of non-U.S. flag vessels under bareboat charter operated by the entity. Number of Non US Flag Vessels under Time Charters Number of non-U.S. flag vessels under time charter Represents the number of non-U.S. flag vessels under time charter operated by the entity. Unrecorded Unconditional Purchase Obligation Initial Payment Initial payment under the agreement Represents the amount of initial payment made for construction of ships under the agreement. Unrecorded unconditional purchase obligation due in year 2015 and 2016 Represents the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second and third fiscal year following the latest fiscal year. Unrecorded Unconditional Purchase Obligation Payment Due on Second and Third Anniversary Debt Instrument Redemption Period Six [Member] 2015 through 2016 Period six representing sixth most current period of debt redemption features under terms of the debt agreement. Debt Instrument Redemption Period Seven [Member] 2017 through mid-year 2023 Period seven representing seventh most current period of debt redemption features under terms of the debt agreement. Debt Instrument Redemption Period Eight [Member] Mid-year 2023 through mid-year 2027 Period eight representing eighth most current period of debt redemption features under terms of the debt agreement. Debt Instrument Redemption Period Nine [Member] After mid-year 2027 Period nine representing ninth most current period of debt redemption features under terms of the debt agreement. Percentage of Employee Covered by Collective Bargaining Agreements with Unions Percentage of employees covered by collective bargaining agreements with unions Represents the percentage of employees covered by collective bargaining agreements with unions. Percentage of Employee Covered by Collective Bargaining Agreements which Expire in 2014 Percentage of employees covered by agreements that expire in 2014. Represents the percentage of employees covered by collective bargaining agreements with unions that expire in 2014. Effective Income Tax Rate Reconciliation Unrecognized Tax Benefit Unrecognized tax benefit (as a percent) Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to unrecognized tax benefit. Impairment of Investment [Abstract] Impairment of Investment Equity Method Investment Summarized Financial Information Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities The amount of accounts payable and accrued liabilities reported by an equity method investment of the entity. Accounts Receivable Accounts Receivable, Net [Abstract] Prepaid Expense and Other Assets [Policy Text Block] Prepaid and Other Assets: Disclosure of accounting policy for prepaid and other assets. Tax Benefit from Equity Issuance Tax benefit from equity issuance Adjustments in operating activities related to tax benefit from equity issuance. Accumulated Other Comprehensive Income (Loss) Amortization of Deferred Pension Post-retirement Costs and Non Qualified Plans Amortization of deferred pension, post-retirement costs and non-qualified plans Represents the amount of amortization of deferred pension, post-retirement costs and non-qualified plans. Term Notes Payable 4.35 Percent Through 2044 [Member] 4.35%, payable through 2044 Represents information pertaining to 4.35 percent, payable through 2044. Time-based and performance based shares Time-based and Performance based Shares [Member] Represents information pertaining to time-based and performance based shares. Employee [Member] Employees Represents information pertaining to certain employee. Number of Subpoenas Received Number of subpoenas received from the Hawaii Attorney General Represents the number of subpoenas received from the Hawaii Attorney General by the entity. Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation Less accumulated depreciation and amortization Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Member] Intangible assets Acquired Finite-Lived Intangible Assets [Line Items] Additional paid in capital Additional Paid in Capital, Common Stock Additional Capital Additional Paid-in Capital [Member] Adjustments for Error Correction [Domain] Reconciling adjustments: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Excess tax benefit and share withholding Adjustments Related to Tax Withholding for Share-based Compensation Share-based expense (net of tax) Allocated Share-based Compensation Expense, Net of Tax Total share-based expense Allocated Share-based Compensation Expense Total stock-based compensation cost Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable [Roll Forward] Schedule of changes in the allowance for doubtful accounts receivable Allowance for Credit Losses on Financing Receivables [Table Text Block] Write-offs and Other Allowance for Doubtful Accounts Receivable, Write-offs Balance at Beginning of year Balance at End of Year Allowance for Doubtful Accounts Receivable Amortization of Intangible Assets Aggregate intangible asset amortization Antidilutive Securities [Axis] Earnings Per Share ("EPS") Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total assets Assets Assets Current Assets: Assets, Current [Abstract] ASSETS Assets [Abstract] Total current assets Assets, Current Long term assets related to discontinued operations Assets of Disposal Group, Including Discontinued Operation, Noncurrent Current assets related to discontinued operations Assets of Disposal Group, Including Discontinued Operation, Current Outstanding checks in excess of funds on deposits Bank Overdrafts Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Business Acquisition [Axis] Additional disclosure Business Acquisition, Pro Forma Information [Abstract] Acquisition: Business Acquisition [Line Items] Business Acquisition, Acquiree [Domain] DESCRIPTION OF THE BUSINESS Business Description and Basis of Presentation [Text Block] Counterparty Name [Axis] Property and equipment subject to capital leases Capital Leases, Balance Sheet, Assets by Major Class, Net Capital leases classified as current Capital Lease Obligations, Current Aloha-class dual-fuel capable containership Capital Addition Purchase Commitments [Member] Capital leases Capital Lease Obligations Capital lease obligations Capital Expenditures Incurred but Not yet Paid Amortization expenses Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation Carrying value Reported Value Measurement [Member] Cash and cash equivalents, beginning of the year Cash and cash equivalents, end of the year Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations Net Increase (Decrease) in Cash and Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash Cash [Member] Cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash assumed by A&B upon Separation Cash Acquired from Acquisition Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Cash and Cash Equivalents Cash and Cash Equivalents [Abstract] Non-cash Information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Cash flows used in investing activities of discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Cash flows used in operating activities of discontinued operations Cash Flow Used in Operating Activities from Discontinued Operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Cash flows provided by financing activities of discontinued operations Cash Provided by (Used in) Financing Activities, Discontinued Operations Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate by Type [Axis] Collective Bargaining Arrangement [Domain] Collective Bargaining Arrangement [Axis] CONTINGENCIES Commitments and Contingencies (Note 6) Commitments and Contingencies. CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Self-Insured Liabilities Commitments and Contingencies, Policy [Policy Text Block] Capital stock, stated value (in dollars per share) Common Stock, Par or Stated Value Per Share Common Stock Common Stock [Member] Capital stock Common Stock, Value, Issued Capital stock, shares authorized Common Stock, Shares Authorized Balance (in shares) Balance (in shares) Capital stock, shares outstanding Common Stock, Shares, Outstanding PENSION AND POST-RETIREMENT PLANS Deferred tax assets and deferred tax liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Comprehensive Income (Loss): Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive Income Comprehensive Income Comprehensive Income Comprehensive Income [Member] Principles of Consolidation Consolidation, Policy [Policy Text Block] Construction in progress Construction in Progress [Member] Containers and equipment Containers [Member] Number of shares of common stock of A&B received for each share upon separation Conversion of Stock, Shares Converted Other Cost of services from transactions with unconsolidated affiliate Costs and Expenses, Related Party Costs and Expenses: Costs and Expenses [Abstract] Total costs and expenses Costs and Expenses State Current State and Local Tax Expense (Benefit) Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) Total Current Income Tax Expense (Benefit) Customer lists Customer Lists [Member] Debt Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Debt issued Long-term debt to be issued to private institution Debt Instrument, Face Amount Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Axis] 2022 and 2023 Debt Instrument, Redemption, Period Two [Member] 2021 Debt Instrument, Redemption, Period One [Member] 2024 to 2027 Debt Instrument, Redemption, Period Three [Member] Starting in 2029, and thereafter until 2044 Debt Instrument, Redemption, Period Five [Member] 2028 Debt Instrument, Redemption, Period Four [Member] DEBT Release of MV Manulani as security for debt Debt Instrument, Collateral Amount Outstanding amount Long-term Debt, Gross DEBT Debt Disclosure [Text Block] Term of debt Debt instrument term Debt Instrument, Term Annual principal payments Debt Instrument, Annual Principal Payment Debt securities Debt Securities [Member] Current portion of long-term debt Debt, Current Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Semi-annual payments Debt Instrument, Periodic Payment, Principal Interest rate, maximum (as a percent) Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum Interest rate, minimum (as a percent) Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum Deferred Costs, Noncurrent Deferred dry-docking costs Dry-docking Costs Deferred Charges, Policy [Policy Text Block] Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] Total deferred tax liabilities Deferred Tax Liabilities, Gross Deferred Deferred Other Tax Expense (Benefit) Deferred income taxes Deferred Deferred Income Tax Expense (Benefit) Net deferred tax liability Deferred Tax Assets, Net Profit sharing plan Deferred Profit Sharing [Member] Total deferred tax assets Deferred Tax Assets, Gross Other Deferred Tax Assets, Other Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Current Deferred tax assets related to net operating losses from the operations of Matson South Pacific Deferred Tax Assets, Net of Valuation Allowance Deferred tax assets: Deferred Tax Assets, Net [Abstract] Benefit plans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Allowance for doubtful accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Alternative minimum tax credits Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Joint ventures and other investments Deferred Tax Liabilities, Investment in Noncontrolled Affiliates Basis differences for property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Deferred revenue Deferred Tax Liabilities, Intangible Assets Insurance reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Self Insurance Reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves Foreign losses and unremitted earnings Deferred Tax Liabilities, Undistributed Foreign Earnings Estimated full year cash contributions to pension plan Defined Benefit Plan, Expected Contributions in Current Fiscal Year Total Estimated net loss and prior service credit, net of tax, that will be recognized in net periodic pension cost Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax Estimated contributions to be made Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year 2016 Defined Benefit Plan, Expected Future Benefit Payments, Year Three Benefit obligation at beginning of year Benefit obligation at end of year Projected benefit obligation Total obligation Defined Benefit Plan, Benefit Obligation Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Change in Benefit Obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Weighted Average Assumptions: Defined Benefit Plan, Assumptions Used in Calculations [Abstract] Amounts recognized in accumulated other comprehensive income for net loss, net of tax Net loss (net of taxes) Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax Effect of one percentage point decrease on total of service and interest cost components Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components Qualified Pension Plans and Post-retirement Plans Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] Actuarial (gain) loss Defined Benefit Plan, Actuarial Gain (Loss) 2015 Defined Benefit Plan, Expected Future Benefit Payments, Year Two Discount rate used to determine obligation (as a percent) Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (net of tax) Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] 2018 Defined Benefit Plan, Expected Future Benefit Payments, Year Five Expected return plan assets (as a percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Amortization of net loss Amortization of net loss included in net periodic pension cost Defined Benefit Plan, Amortization of Gains (Losses) Discount rate (as a percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Effect of one percentage point decrease on post-retirement benefit obligation Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation 2017 Defined Benefit Plan, Expected Future Benefit Payments, Year Four Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year Estimated net loss and prior service credit that will be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2014 Amortization of prior service cost included in net periodic pension cost Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) Estimated net loss snd prior service credit that will be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2014 Estimated net loss that will be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2014 Defined Benefit Plan, Future Amortization of Gain (Loss) 2014 Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months Fair value of plan assets, by asset category Defined Benefit Plan Disclosure [Line Items] Pension and Post-retirement Plans Employee benefit plans Actual return on plan assets Defined Benefit Plan, Actual Return on Plan Assets Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Employer matching contribution (as a percent) Expenses paid Defined Benefit Plan, Other Changes Benefits paid Defined Benefit Plan, Benefits Paid Accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Rate of compensation increase (as a percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Target allocation (as a percent) Defined Benefit Plan, Target Plan Asset Allocations Prior service cost (net of taxes) Defined Benefit Plan, Accumulated Other Comprehensive Income Net Prior Service Cost (Credit), after Tax Amount recognized as prior service credit, net of tax 2019-2023 Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter Changes in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Effect of one percentage point increase on total of service and interest cost components Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components Estimated future benefit payments Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] Effect of one percentage point increase on post-retirement benefit obligation Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation Service cost Defined Benefit Plan, Service Cost Plan participants' contributions Defined Benefit Plan, Contributions by Plan Participants Funded Status and Recognized Liability Defined Benefit Plan, Funded Status of Plan Interest cost Defined Benefit Plan, Interest Cost Total Balance at the beginning of the period Balance at the end of the period Fair value of plan assets Defined Benefit Plan, Fair Value of Plan Assets Cash contributed to pension plans Employer contribution Defined Benefit Plan, Contributions by Employer Effect of one percentage point change in the assumed health care cost trend rates Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract] Net periodic benefit cost Expense associated with plans Defined Benefit Plan, Net Periodic Benefit Cost Initial health care cost trend rate (as a percent) Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year Ultimate rate (as a percent) Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Components of Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Assets sold during the period Defined Benefit Plan, Actual Return on Plan Assets Sold During Period Employer matching contribution expenses Defined Contribution Plan, Cost Recognized Defined Benefit Plan, Asset Categories [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Weighted-average asset allocations (as a percent) Defined Benefit Plan, Actual Plan Asset Allocations Assets held at the reporting date Defined Benefit Plan, Actual Return on Plan Assets Still Held Actual return (loss) on plan assets: Defined Benefit Plan, Actual Return on Plan Assets [Abstract] Purchases, sales and settlements, net Defined Benefit Plan, Purchases, Sales, and Settlements Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Capital construction fund Deposits Assets, Noncurrent Depreciation Expense Depreciation Depreciation Depreciation, Depletion, and Amortization [Policy Text Block] Depreciation and amortization expense Depreciation and amortization Decrease in depreciation expense due to change in useful life Depreciation, Depletion and Amortization Derivative Financial Instruments Derivatives, Reporting of Derivative Activity [Policy Text Block] SHARE-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] SHARE-BASED COMPENSATION Loss from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract] Tax expense Tax (expense) benefit from A&B Discontinued Operation, Tax Effect of Discontinued Operation Discontinued Operations Discontinued Operations, Policy [Policy Text Block] DISCONTINUED OPERATIONS CLX2 operating and shutdown (losses), net of tax CLX2 operating and shutdown (losses) Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Fair value of the obligations arising from exit activities (Loss) income from A&B Disposal Group, Including Discontinued Operation, Operating Income (Loss) Disposal Groups, Including Discontinued Operations, Name [Domain] Expenses Expenses from A&B Disposal Group, Including Discontinued Operation, Operating Expense DISCONTINUED OPERATIONS Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Income Income from A&B Disposal Group, Including Discontinued Operation, Revenue Dividends Dividends, Common Stock, Cash Accrued dividend Dividends Payable Due to affiliate Due to Affiliate, Noncurrent Due to affiliate Due to Affiliate, Current Per Common Share Amount, Basic Basic Earnings (Loss) Per Share: Earnings Per Share, Basic [Abstract] Weighted Average Number of Shares Outstanding: Earnings Per Share, Basic, Other Disclosures [Abstract] Per Common Share Amount, Diluted Diluted Earnings (Loss) Per Share: Earnings Per Share, Diluted [Abstract] EARNINGS PER SHARE ("EPS") Earnings Per Share [Text Block] Basic and Diluted Earnings per Share (EPS) of Common Stock Earnings Per Share, Policy [Policy Text Block] Basic Earnings Per Share (in dollars per share) Net income (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Diluted Earnings Per Share (in dollars per share) Net income (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Net Income, Earnings Per Share: EARNINGS PER SHARE ("EPS") Percentage of tax expense with net income Effective Income Tax Rate Reconciliation, Percent Difference of Income tax expense from amounts computed by applying the statutory federal rate to income from continuing operations before income taxes Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent State income tax (as a percent) Other-net (as a percent) Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Deferred tax adjustment (as a percent) Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Computed federal income tax expense (as a percent) Effective Income Tax Rate Reconciliation, Disposition of Business, Percent Discontinued operations (as a percent) Separation costs (as a percent) Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Percent Employee-related Liabilities, Current Payroll and vacation benefits Stock options Employee Stock Option [Member] Total recognized tax benefit Net tax benefits from share-based transactions Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Tax benefit realized upon option exercise Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options Total unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Unrecognized compensation cost weighted-average period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Cash received by Matson upon option exercise Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options Response costs, legal expenses, and third party claims related to the release of molasses Environmental Remediation Expense Environmental Matters Environmental Remediation Costs Recognized [Abstract] Environmental Costs Environmental Costs, Policy [Policy Text Block] Equipment and repair services expense and other Equipment Expense Operating revenue Equity Method Investment, Summarized Financial Information, Revenue INVESTMENT IN TERMINAL JOINT VENTURE Equity Method Investments and Joint Ventures Disclosure [Text Block] Equity method investments Equity Method Investments Schedule of financial information for the Company's equity method investment Equity Method Investments [Table Text Block] Total assets Equity Method Investment, Summarized Financial Information, Assets Ownership interest in SSAT (as a percent) Equity Method Investment, Ownership Percentage Ownership interest accounted in terminal joint venture (as a percent) Noncurrent liabilities Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities Noncurrent assets Equity Method Investment, Summarized Financial Information, Noncurrent Assets Current liabilities Equity Method Investment, Summarized Financial Information, Current Liabilities Financial information for equity method investment Equity Method Investment, Summarized Financial Information [Abstract] Net (loss) income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Investment, Name [Domain] Operating costs and expenses Equity Method Investment, Summarized Financial Information, Cost of Sales Income from continuing operations Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations before Extraordinary Items Equity Component [Domain] Operating (loss) income Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) Current assets Equity Method Investment, Summarized Financial Information, Current Assets Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities Dividends and distributions from the unconsolidated terminal venture Proceeds from Equity Method Investment, Dividends or Distributions INVESTMENT IN TERMINAL JOINT VENTURE Equity Equity Method Investment Summarized Financial Information, Equity Adjustments for Error Corrections [Axis] Other Error Corrections and Prior Period Adjustments Restatement [Line Items] Total Fair value Estimate of Fair Value Measurement [Member] Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Excess Tax Benefit from Share-based Compensation, Financing Activities Tax Withholding related to net share settlements of restricted stock units Extinguishment of debt Extinguishment of Debt, Amount Measurement Frequency [Axis] Fair Value, Hierarchy [Axis] Recurring basis Fair Value, Measurements, Recurring [Member] Fair Value, Measurement Frequency [Domain] Measurement Basis [Axis] Schedule of fair value measurement Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] FAIR VALUE MEASUREMENTS Fair Value Hierarchy [Domain] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Fair value of financial instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, by Balance Sheet Grouping [Table] Fair Value Measurement [Domain] Reconciliation of all pension plan investments measured at fair value on a recurring basis using significant unobservable inputs (level 3) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Quoted Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Expected useful lives Finite-Lived Intangible Asset, Useful Life Gross Cost Finite-Lived Intangible Assets, Gross 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated amortization expenses related to intangibles Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Book Value Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five 2014 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two Fiscal Period Fiscal Period, Policy [Policy Text Block] Emerging markets fixed income Fixed Income Funds [Member] Gain on disposal of property Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Impairments of goodwill Goodwill, Impairment Loss Balance at the beginning of the period Balance at the end of the period Goodwill Goodwill GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Goodwill Goodwill [Line Items] Accumulated impairment related to goodwill Goodwill, Impaired, Accumulated Impairment Loss Changes in the carrying amount of goodwill Goodwill [Roll Forward] Changes in the Company's goodwill GOODWILL AND INTANGIBLE ASSETS Additions Goodwill, Acquired During Period Impairment of Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Impairment of Long-Lived Assets and Finite-Lived Intangible Assets Impairment of Long-Lived Assets and Finite-Lived Intangible Assets Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Impairment of Intangible Assets, Finite-lived Impairment of intangible assets Impairment on long lived intangible assets Impairment on long-lived intangible assets Impairment of Long-Lived Assets Held-for-use Impairment charges of vessels and equipment Continuing operations (in dollars per share) Income from continuing operations (in dollars per share) Basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Equity in income from terminal joint venture The Company's share of net (loss) income Income (Loss) from Equity Method Investments Income From Continuing Operations Net income Income from continuing operations Income (Loss) from Continuing Operations Attributable to Parent Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Discontinued operations (in dollars per share) Loss from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Condensed Consolidated Statements of Income and Comprehensive Income Income Taxes: INCOME TAXES Disposal Group Name [Axis] Accounting for and Classification of Discontinued Operations Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Continuing operations (in dollars per share) Income from continuing operations (in dollars per share) Diluted (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share INCOME TAXES Income Tax Disclosure [Text Block] Discontinued operations (in dollars per share) Loss from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Separation costs Effective Income Tax Rate Reconciliation, Disposition of Business, Amount Income tax expense Income taxes Provision for income taxes Income Tax Expense (Benefit) Income tax expense Deferred tax adjustment Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Difference of Income tax expense from amounts computed by applying the statutory federal rate to income from continuing operations Effective Income Tax Rate Reconciliation, Amount [Abstract] Income tax refund Income Taxes Paid, Net Non-deductible separation costs Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Net Income (Loss) from Discontinued Operations Net of Income taxes Loss From Discontinued Operations (net of income taxes) Loss from discontinued operations (net of tax) Loss from discontinued operations Loss From Discontinued Operations (net of income taxes) Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Computed federal income tax expense Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Income Taxes Income Tax, Policy [Policy Text Block] SIT Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Other-net Effective Income Tax Rate Reconciliation, Other Adjustments, Amount FIN 48 remeasurement Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable Accounts receivable Increase (Decrease) in Accounts and Notes Receivable Deferred drydocking costs Increase (Decrease) in Deferred Charges Increase in income taxes Increase (Decrease) in Income Taxes Other liabilities Increase (Decrease) in Other Operating Liabilities Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Inventory Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Effect of Dilutive Securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Interest expense Interest expense, net Interest Expense Interest paid Interest Paid, Net Inventories Inventory, Net Impairment of Investment Investment, Policy [Policy Text Block] Investment in terminal joint venture Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Equity in earnings from affiliates Investments in and Advances to Affiliates, Amount of Equity Letters of credit Letters of Credit Outstanding, Amount Fixed rate debt Long-term Debt, Percentage Bearing Fixed Interest, Amount Variable rate debt Long-term Debt, Percentage Bearing Variable Interest, Amount Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Weighted average coupon rate (as a percent) Long-term Debt, Weighted Average Interest Rate Rent expenses for short-term and cancelable equipment Lease expense to A & B Operating Leases, Rent Expense LEASES LEASES Leases of Lessee Disclosure [Text Block] 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Long-term debt Long-term Debt, Fair Value Total long-term debt Long-term Debt and Capital Lease Obligations 2015 Long-term Debt, Maturities, Repayments of Principal in Year Two 2017 Long-term Debt, Maturities, Repayments of Principal in Year Four 2018 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five 2016 Long-term Debt, Maturities, Repayments of Principal in Year Three Long-term debt maturities Long-term Debt, Fiscal Year Maturity [Abstract] Less current portion Long-term Debt, Current Maturities Long-term debt Long-term Debt, Excluding Current Maturities 2014 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months Loss Contingency, Nature [Domain] Loss Contingencies [Table] Commitments and financial arrangements Loss Contingency, Accrual, Current Loss Contingency, Information about Litigation Matters [Abstract] Other Legal Matters Commitments, Guarantees and Contingencies Loss Contingencies [Line Items] Loss Contingency Nature [Axis] Machinery and equipment Machinery and Equipment [Member] Other Segment Reconciling Items [Member] Maximum Maximum [Member] Minimum Minimum [Member] Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Threshold of total contributions for which planned years are disclosed (as a percent) Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Contributions Multiemployer Plan Type [Axis] Multiemployer Plan Withdrawal Obligation Multiemployer Plans, Withdrawal Obligation Multiemployer Plan, Plan Information [Axis] Multiemployer Plans Type [Domain] Multiemployer Benefit Postretirement Plans Multiemployer Plans, Postretirement Benefit [Member] Multiemployer Plan Name [Domain] Contributions Multiemployer Plan, Period Contributions Multiemployer Plan Name [Axis] Multiemployer Plans Multiemployer Plans [Line Items] Multiemployer Benefit Pension Plans Multiemployer Plans, Pension [Member] Municipal bonds Municipal Bonds [Member] Cash Flows Used in Financing Activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash Flows from Discontinued Operations: Net Cash Provided by (Used in) Discontinued Operations [Abstract] Net cash flows used in discontinued operations Net Cash Provided by (Used in) Discontinued Operations Cash Flows Provided by Operating Activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net Income, Basic Net Income (Loss) Available to Common Stockholders, Basic Net cash provided by operating activities Cash Provided by Operating Activities from Continuing Operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net Income, Diluted Net Income (Loss) Available to Common Stockholders, Diluted Net Income Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Cash Flows from Investing Activities from Continuing Operations Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash used in investing activities Cash Flows Used in Investing Activities from Continuing Operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash Flows Used in Investing Activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net Income Net Income Net Income (Loss) Attributable to Parent New Accounting Pronouncements or Change in Accounting Principle [Table] Recent Accounting Pronouncements: Other New Accounting Pronouncements or Change in Accounting Principle [Line Items] Recent Accounting Pronouncements: New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Impact of Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Other Income and (Expense): Nonoperating Income (Expense) [Abstract] Number of segments Number 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income Revenue from Related Parties Operating Revenue: Revenues [Abstract] Revolving Credit Facility Revolving Credit Facility [Member] Fair value of stock vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Exercisable, aggregate intrinsic value (in dollars) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Minimum exercise price as a percentage of fair market value of common stock Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Expiration Term Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Exercisable, weighted average contractual life Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Outstanding, weighted average contractual life Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of estimated amortization expenses related to intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Short-term borrowings Short-term Debt, Fair Value Agribusiness Sales Revenue, Goods, Net Total operating revenue Revenue Revenue, Net Scenario, Previously Reported [Member] Previously reported Adjustment Scenario, Adjustment [Member] Scenario forecast Scenario, Forecast [Member] Scenario, Unspecified [Domain] Schedule of Multiemployer Plans [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Components of Net 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continuing operations Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of maturities of long-term debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of reasons why income tax expense differs from amounts computed by applying the statutory federal rate to income from continuing operations Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reconciliation of unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of related party transactions Schedule of Related Party Transactions [Table Text Block] Schedule of quarterly financial information Schedule of Quarterly Financial Information [Table Text Block] Schedule of effect of one percentage point increase 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Share-based expense Vesting period of awards granted Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Weighted Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Shares granted Number of shares that can be purchased with option award (in shares) Share-based compensation Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Outstanding, weighted average grant-date fair value, beginning of period (in dollars per share) Outstanding, weighted average grant-date fair value, end of period (in dollars per shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Cancelled, weighted average grant-date fair value (in dollars per shares) Cancelled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Exercised, weighted average exercise price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield (as a percent) Exercised, weighted average grant-date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Number of shares remaining available for future issuance under all equity compensation plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Common stock available for future issuance (in shares) Intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility (as a percent) Common stock initially available for future issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate (as a percent) Weighted average valuation assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value (in dollars per share) Forfeited and expired, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Forfeited and expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Outstanding, weighted average exercise price, beginning of period (in dollars per share) Outstanding, weighted average exercise price, end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Outstanding, aggregate intrinsic value (in dollars) Activity in the entity's stock option plans Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Equity Award [Domain] Excess tax benefit and share withholding (in shares) Shares Paid for Tax Withholding for Share Based Compensation Standby letters of credit Standby Letters of Credit [Member] Operating Activities [Axis] Scenario [Axis] Statement [Table] 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Type [Domain] Subsequent Event Type [Axis] MatNav Subsidiaries [Member] Supplemental Cash Flow Information: Supplemental Cash Flow Information [Abstract] U.S. Custom bonds Surety Bond [Member] Title of Individual [Axis] Relationship to Entity [Domain] Tradenames Trade Names [Member] Accounts Receivable Trade and Other Accounts Receivable, Policy [Policy Text Block] Trademarks [Member] Trademarks Retirement of treasury shares (in shares) Treasury Stock, Shares, Retired Retirement of treasury shares Treasury Stock, Retired, Cost Method, Amount Treasury Treasury Stock [Member] Cost of treasury stock Treasury Stock, Value Self-insured workers' compensation and other insurance Uninsured Risk [Member] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Post-retirement Benefits United States Postretirement Benefit Plan of US Entity, Defined Benefit [Member] Other Post-retirement Benefits Pension Benefits United States Pension Plan of US Entity, Defined Benefit 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years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Number of 3,600-TEU Aloha-class dual-fuel capable containerships to be constructed Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required Cost for construction of containerships, including preparation of vessels for service Unrecorded Unconditional Purchase Obligation, Purchases Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unsecured debt Unsecured Debt [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] U.S. Treasuries US Treasury Securities [Member] Vesting [Axis] Vesting [Domain] Weighted Average Common Shares Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Basic (in shares) Weighted Average Common Shares ,Basic ( in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Common Shares ,Diluted (in shares) Weighted Average Number of Shares Outstanding, 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