Accumulated other comprehensive loss Less accumulated depreciation and amortization Additional capital Capital expenditures Payments to Acquire Productive Assets Stock Options [Member] Condensed Consolidated Balance Sheets (Unaudited) [Abstract] Net income (in dollars per share) Earnings Per Share, Basic Additional costs incurred, net of tax, not classified as discontinued operations Cash and cash equivalents Interest paid Interest Paid, Net Proceeds from (payments on) line-of-credit agreements, net Commitments, Guarantees and Contingencies Commitments and Contingencies Disclosure [Text Block] Capital stock Comprehensive income (net of tax) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Costs of goods sold, services and rentals Costs and Expenses: Total current liabilities Liabilities, Current Current Liabilities: Notes payable and current portion of long-term debt Principal balance of note held by joint venture Deferred income taxes Deferred Tax Assets, Net, Current Deferred income taxes Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Guarantor obligations, maximum exposure Net income (in dollars per share) Earnings Per Share, Diluted Accounting for and Classification of Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Disposal Groups, Including Discontinued Operations, Name [Domain] Revenue included in discontinued operations Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Axis] CLX2 operating and shutdown losses Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Equity in income (losses) of real estate affiliates Total share-based expense Total recognized tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Guarantee of Indebtedness of Others [Member] Guarantee of obligations of joint venture [Member] Condensed Consolidated Statements of Income (Unaudited) [Abstract] Income From Continuing Operations Income (Loss) from Continuing Operations Attributable to Parent Continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Continuing operations (in dollars per share) Discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share Discontinued operations (in dollars per share) Income taxes paid Income Taxes Paid, Net Employee/director stock options and restricted stock units (in shares) Interest expense Interest Expense Interest Expense Inventories Real estate held for sale Interest income Investments in Affiliates Fair value of obligations arising from exit activities Total Liabilities and Equity LIABILITIES AND SHAREHOLDERS' EQUITY Long-term debt Carrying amount of long-term debt Long-term Debt Loss Contingencies by Nature of Contingency [Axis] Loss Contingencies [Line Items] Loss Contingencies [Table] Loss Contingency, Nature [Domain] Loss Contingency, Settlement Agreement, Terms Multiemployer plan withdrawal obligation Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Cash Flows from Financing Activities: Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Investing Activities: Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities Net Income Net income Net Income (Loss) Attributable to Parent Net Increase (Decrease) in Cash and Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Recent Accounting Pronouncements [Abstract] Other Income and (Expense): Total long-term liabilities Liabilities, Noncurrent Long-term Liabilities: Operating Income Operating Income (Loss) Revenue: Condensed Consolidated Financial Statements Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Gain on insurance settlement Other Nonoperating Income Dividends paid Payments of Dividends, Common Stock Pending or Threatened Litigation [Member] EEOC matter [Member] Pension and Post retirement Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Amortization of net (loss) gain Defined Benefit Plan, Amortization of Gains (Losses) Amortization of prior service cost Components of net periodic benefit cost [Abstract] Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Interest cost Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost Service cost Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Defined Benefit Plan Disclosure [Line Items] Schedule of Defined Benefit Plans Disclosures [Table] Proceeds from issuances debt Proceeds from disposal of property and other assets Property, at cost Property - net Property, Plant and Equipment, Net Increase in investments Payments to Acquire Investments Accounts and notes receivable, net Payments of debt and deferred financing costs Repayments of Long-term Debt Retained earnings Reduction in investments Operating revenue Revenue, Net Income From Discontinued Operations Commitments and Financial Arrangements Segment Results Segment Reporting Disclosure [Text Block] Segment Results Segment Reporting Information [Line Items] Schedule of Segment Reporting Information, by Segment [Table] Selling, general and administrative Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Canceled, weighted average grant-date fair value (in dollars per share) Granted (in shares) Granted, weighted average grant-date fair value (in dollars per share) Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 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 share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vested, weighted average grant-date fair value (in dollars per share) Vesting period of time-based awards (in years) Exercised, weighted average exercise price (in dollars per share) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Granted, weighted average exercise price (in dollars per share) Grant-date fair value (in dollars per share) Outstanding, aggregate intrinsic value, end of period Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 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 Exercisable, end of period (in shares) Exercisable, weighted average exercise price, end of period (in dollars per share) Exercisable, weighted average contractual life, end of period (in years) Dividend yield (in hundredths) Expected term (in years) Volatility rate (in hundredths) Risk-free interest rate (in hundredths) Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Standby Letters of Credit [Member] Standby letters of credit [Member] Condensed Consolidated Statements of Cash Flows (Unaudited) [Abstract] Subsequent Event Type [Axis] Subsequent event, description Subsequent Event [Line Items] Subsequent Event [Table] Subsequent Event Type [Domain] Other Cash Flow Information: Total current assets Assets, Current Current Assets: United States Pension Plans of US Entity, Defined Benefit [Member] Pension Benefits [Member] United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member] Post-retirement Benefits [Member] Diluted (in shares) Denominator for diluted EPS - weighted average shares (in shares) Basic (in shares) Denominator for basic EPS - weighted average shares (in shares) Discontinued operations (net of tax) [Abstract] Total Assets Accrued and other liabilities Uninsured claims and other liabilities Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Segment, Discontinued Operations [Member] Amounts reported in Real Estate discontinued operations [Member] Antidilutive Securities, Name [Domain] ASSETS Real Estate Developments Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Cost of treasury stock Treasury Stock, Value Employee benefit plans - amortization of net loss and prior service costs Other Assets Other Assets, Noncurrent Basic Earnings Per Share: Diluted Earnings Per Share: Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Total shareholders' equity Stockholders' Equity Attributable to Parent Income tax expense Income Tax Expense Unfavorable Regulatory Action [Member] EPA standards for controlling emissions [Member] Cash Dividends Per Share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Comprehensive Income [Abstract] Withdrawal from Multiemployer Defined Benefit Plan [Member] Benefit plan withdrawal obligations [Member] Forfeited and expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Forfeited and expired, weighted average exercise price (in dollars per share) Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Statement, Business Segments [Axis] Operating costs and expenses Costs and Expenses Other Non-cash Information: Activity in the Company's stock option plans [Roll Forward] Stock option plans, additional disclosures [Abstract] Non-vested restricted stock unit activity [Roll Forward] Non-vested restricted stock unit activity, additional disclosures [Abstract] Weighted average fair value assumptions [Abstract] Effect of dilutive securities: Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract] Earnings Per Share Earnings Per Share [Text Block] Weighted Average Number of Shares Outstanding: Number of shares used to compute basic and diluted earnings per share [Abstract] Income (Losses) From Discontinued Operations (net of taxes) (Note 5) Total Income (Losses) From Discontinued Operations (net of taxes) Depreciation and amortization expense Shareholders' Equity: Commitments and Contingencies (Note 2) Accounts payable Payroll and employee benefits Employee Benefit Plan Assets Employee benefit plans Income Before Taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Prepaid expenses and other assets Recent Accounting Pronouncements Description of New Accounting Pronouncements Not yet Adopted [Text Block] Segment [Domain] Significant Reconciling Items [Member] Reconciling Items [Member] Reportable Segment [Member] Transportation: Ocean transportation [Member] Proceeds from issuances of capital stock and other Condensed Consolidated Financial Statements [Abstract] Number of Shares Used to Compute Basic and Diluted Earnings Per Share Commitments, Guarantees and Contingencies [Abstract] Fair Value of Financial Instruments [Abstract] Subsequent Event Subsequent Events [Text Block] Uninsured claims Gain on sale of investment and other Gain on Sale of Investments Pension and Post retirement Plans [Abstract] Comprehensive Income Components of Net Periodic Benefit Cost Non-Vested Restricted Stock Unit Activity Summary of Compensation Related Cost Related to Share-Based Payments Activity in Stock Option Plans Fair value of long-term debt Long-term Debt, Fair Value Other Share-Based Compensation [Abstract] Share-based expense (net of tax) Allocated Share-based Compensation Expense, Net of Tax Restricted Stock Units (RSUs) [Member] 2007 Plan Restricted Stock Units [Member] Accounting for and Classification of Discontinued Operations [Abstract] Segment Results [Abstract] Subsequent Event [Abstract] Minimum vesting period of performance-based awards, provided performance targets are achieved (in years) Outstanding, weighted average contractual life, end of period (in years) Exercisable, aggregate intrinsic value, end of period Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Text Block] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Maturity of U.S. Treasury Note on which interest is based The maturity of the U.S. Treasury note on which interest on the annual retirement benefit is based, under the cash balance formula. Maturity of U.S. Treasury Note on which interest is based (in years) Number of letters of credit The number of letters of credit related to real estate projects. Number of organizations filed a petition to establish IIFS Number of organizations filed with the Water Commission a petition to establish IIFS Performance And Customs Bonds [Member] Performance and customs bonds [Member] 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. Long Term Water Lease Request [Member] Long-term water lease request [Member] Information related to the request made to Hawaii's State Board of Land and Natural Resources (the BLNR) to replace revocable permits with a long-term water lease. Petitions Filed Requesting IIFS In East Maui Streams [Member] Petitions filed requesting IIFS in East Maui streams [Member] Information relating to petitions filed by a third party, requesting that the Commission on Water Resource Management of the State of Hawaii (Water Commission) establish interim instream flow standards in East Maui streams that feed the entity's irrigation system. Petitions Filed Requesting IIFS In West Maui Streams [Member] Petitions filed requesting IIFS in West Maui streams [Member] Information relating to petitions filed by a third party, requesting that the Commission on Water Resource Management of the State of Hawaii (Water Commission) establish interim instream flow standards in West Maui streams that feed the entity's irrigation system. Plan 2007 [Member] 2007 Plan [Member] 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. Predecessor Plan 1998 Directors Plan [Member] Predecessor Plan 1998 Directors' 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 Employee Plan [Member] Predecessor Plan 1998 Employee Plan [Member] The previous stock option plan for employees, which was replaced by the 2007 Plan. This is an equity-based arrangement in which one or more employees receive shares of stock options. CLX2 Service [Member] Termination of Matson's CLX2 service. Agribusiness [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Transportation Logistics services [Member] Transportation: Logistics services [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Real Estate Leasing [Member] Real Estate: Leasing [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Real Estate Sales [Member] Real Estate: Sales [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Transportation Segment, Discontinued Operations [Member] Amounts reported in Transportation discontinued operations [Member] Domain member used to indicate facts reported about operations discontinued during the period. Adoption of Plan Amendments [Member] The adoption of plan amendments to freeze the traditional defined benefit pension plan for non-bargaining unit employees. Percentage of employee's eligible cash compensation provided as annual retirement benefit, under the cash balance formula The percentage of an employee's eligible cash compensation that is provided as an annual retirement benefit, under the cash balance formula. Percentage of employee's eligible cash compensation provided as annual retirement benefit, under the cash balance formula (in hundredths) Duration of charter contracts The duration (in years) of the charter contracts for vessels used in the discontinued operation. Duration of charter contracts (in years) 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 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 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. Discontinued Operations Leasing Operations After tax income (loss) from leasing operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its disposal. Real estate leasing operations Discontinued Operations Sales Of Assets After tax income(loss) from sales of assets of a business component on disposal, or provision therefore during the reporting period, until its disposal. Sales of real estate assets Number of farms alleged complicit in illegal acts The number of farms in Hawaii, including the entity's subsidiary, against which a lawsuit was filed by the Equal Employment Opportunity Commission (EEOC) alleging that the farms were complicit in illegal acts by a company that had hired Thai workers for the farms. Number of boilers impacted by EPA standards The number of boilers impacted by the nationwide standards published by the EPA for controlling hazardous air pollutant emissions from industrial, commercial, and institutional boilers and process heaters. Approximate percentage of irrigation water provided by West Maui irrigation system The approximate percentage of irrigation water used by HC&S over the last ten years provided by the West Maui irrigation system. Approximate percentage of irrigation water provided by the West Maui irrigation system (in hundredths) Number of petitions on which Water Commission took action The number of petitions on which the Water Commission to action, which resulted in some quantity of water being returned to the streams rather than being utilized for irrigation purposes, as per the IIFS request. Number of petitions on which the Water Commission took action Number of streams for which IIFS was requested The number of streams for which interim instream flow standards (IIFS) was requested via petitions filed by a third party to the Commission on Water Resource Management of the state of Hawaii. Capacity of irrigation water supplied by additional watershed lands The capacity of irrigation water used by HC&S supplied by the additional watershed lands over the last ten years. Capacity of irrigation water supplied by additional watershed lands (in hundredths) Additional watershed lands accessible by licenses The number of acres of additional watershed lands owned by the State of Hawaii in East Maui, which the entity can access using water licenses. Additional watershed lands accessible by licenses (in acres) Number of water licenses held and extended as revocable permits The number of water licenses held by the entity, which provides access to another 30,000 acres owned by the State of Hawaii in East Maui. All of these licenses were extended as revocable permits that are renewed annually. Watershed lands in East Maui owned The number of acres of watershed lands in East Maui owned by the entity. Watershed lands in East Maui owned (in acres) Transportation and other matters guarantees Maximum potential amount of future payments (undiscounted) the Company could be required to make to a surety or lender, from whom the Company obtained a bond letter of credit, if the Company fails to perform and the surety or lender has made payment to the obligee or beneficiary. Bonds related to transportation and other matters Bonds related to real estate construction projects Maximum potential amount of future payments (undiscounted) the Company could be required to make to a surety or lender, from whom the Company obtained a bond or letter of credit, if the Company fails to perform and the surety or lender has made payment to the obligee or beneficiary. US customs bonds Maximum potential amount of future payments (undiscounted) the Company could be required to make to a surety or lender, from whom the Company obtained a bond letter of credit, if the Company fails to perform and the surety or lender has made payment to the obligee or beneficiary. U.S. customs bonds Letter of credit amount related to real estate business Letter of credit amount related to the entity's real estate business. Letter of credit amount that enables qualification as self-insurer Letter of credit amount that enables the entity to qualify as a self-insurer for state and federal workers' compensation liabilities. Contingent Obligations, Maximum Exposure Maximum potential amount of future payments (undiscounted) the Company could be required to make to a surety or lender, from whom the company obtained a bond or letter of credit, if the Company fails to perform and the surety or lender has made payment to the obligee or beneficiary. Contingent obligations, maximum exposure Share-based expense (net of estimated forfeitures) [Abstract] Estimated full year cash contributions to pension plan An estimate of cash contributions to the pension plan for the entire fiscal year. Estimated full year net periodic benefit cost The total amount of expected net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. General Corporate Expenses The aggregate total of corporate expenses of managing and administering the affairs of an entity, excluding administrative costs of subsidiaries of the reporting entity, which are not directly or indirectly associated with the manufacture, sale, or creation of a product or product line. General Corporate Expenses Total segment operating profit The net result for the period of deducting operating expenses from operating revenues. Also includes non-operating income and expense for the segments. Total operating profit Total segment revenue Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Includes the effect of amounts reported in discontinued operations and other reconciling items. Total revenue Tax Deferred Real Estate Purchases Acquisitions of property using IRS code Section 1031 escrow deposits that represent non-cash investing activities. Tax-deferred real estate purchases Tax Deferred Real Estate Sales Proceeds from property sales deposited into escrow that potentially qualify for tax deferral under IRS code Section 1031 that represent non-cash investing activities. Tax-deferred real estate sales Withdrawals from 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. 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 Section exchange proceeds Carrying amount of Section 1031 exchange proceeds held that may expire without reinvestment. Section 1031 exchange proceeds