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PARENT COMPANY CONDENSED FINANCIAL INFORMATION, Debt and Dividends (Details) (USD $) In Millions, unless otherwise specified |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended
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Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2010 Revolving Credit Loans [Member] | Dec. 31, 2009 Revolving Credit Loans [Member] | Dec. 31, 2010 Term Loan 6.90% [Member] | Dec. 31, 2009 Term Loan 6.90% [Member] | Dec. 31, 2010 Term Loan 5.53% [Member] | Dec. 31, 2009 Term Loan 5.53% [Member] | Dec. 31, 2010 Term Loan 5.55% [Member] | Dec. 31, 2009 Term Loan 5.55% [Member] | Dec. 31, 2010 Term Loan 5.56% [Member] | Dec. 31, 2009 Term Loan 5.56% [Member] | Dec. 31, 2010 Term Loan 4.10% [Member] | Dec. 31, 2009 Term Loan 4.10% [Member] | Dec. 31, 2010 Term Loan 6.20% [Member] | Dec. 31, 2009 Term Loan 6.20% [Member] | Dec. 31, 2010 Term Loan 7.42% [Member] | Dec. 31, 2009 Term Loan 7.42% [Member] | Dec. 31, 2010 Term Loan 5.50% [Member] | Oct. 31, 2010 Term Loan 5.50% [Member] | Dec. 31, 2009 Term Loan 5.50% [Member] | Dec. 31, 2010 Prudential facility [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Revolving Credit Loans [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Revolving Credit Loans [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 6.90% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 6.90% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 5.53% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 5.53% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 5.55% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 5.55% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 5.56% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 5.56% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 4.10% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 4.10% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 6.20% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 6.20% [Member] | Jun. 30, 2005 A&B (Parent Company) [Member] Term Loan 6.20% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 7.42% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 7.42% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Term Loan 5.50% [Member] | Oct. 31, 2010 A&B (Parent Company) [Member] Term Loan 5.50% [Member] | Dec. 31, 2009 A&B (Parent Company) [Member] Term Loan 5.50% [Member] | Dec. 31, 2010 A&B (Parent Company) [Member] Prudential facility [Member] | Dec. 31, 2010 Matson (Subsidiary) [Member] | Dec. 31, 2009 Matson (Subsidiary) [Member] | Dec. 31, 2008 Matson (Subsidiary) [Member] | Dec. 28, 2012 Matson (Subsidiary) [Member] Revolving Credit Loans [Member] | Dec. 31, 2010 Matson (Subsidiary) [Member] Revolving Credit Loans [Member]
Long-term debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 522 | $ 471 | $ 108 | $ 34 | $ 100 | $ 100 | $ 50 | $ 50 | $ 50 | $ 50 | $ 25 | $ 25 | $ 12 | $ 25 | $ 11 | $ 11 | $ 0 | $ 3 | $ 6 |  | $ 0 |  | $ 338 | $ 279 | $ 93 | $ 24 | $ 100 | $ 100 | $ 50 | $ 50 | $ 50 | $ 50 | $ 25 | $ 25 | $ 12 | $ 25 | $ 2 | $ 2 |  | $ 3 | $ 0 | $ 6 |  | $ 0 |  |  |  |  |  |
Less current portion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (108) | (40) | (92) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | 386 | 406 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 230 | 239 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (in hundredths) |  |  | 0.64% | 0.68% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.57% | 0.76% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (in hundredths) |  |  |  |  | 6.90% | 6.90% | 5.53% | 5.53% | 5.55% | 5.55% | 5.56% | 5.56% | 4.10% | 4.10% | 6.20% | 6.20% |  | 7.42% | 5.50% |  |  |  |  |  |  |  | 6.90% | 6.90% | 5.53% | 5.53% | 5.55% | 5.55% | 5.56% | 5.56% | 4.10% | 4.10% | 6.20% | 6.20% |  | 7.42% |  | 5.50% |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2020 | 2020 | 2016 | 2016 | 2017 | 2017 | 2016 | 2016 | 2012 | 2012 | 2013 | 2013 |  | 2010 |  | November 2014 |  |  |  |  |  |  |  |
Long-term Debt Maturities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in 2011 | 136 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in 2012 | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in 2013 | 45 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 26 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in 2014 | 54 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in 2015 | 45 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due after 2015 | 202 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 104 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of commercial banks |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of facility (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3Y |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3Y |  |  |  |  |
Maximum borrowing capacity |  |  | 325 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400 |  |  | 225 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400 |  |  |  |  | 100
Expiration date of facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | April 19, 2012 |  |  | December 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | April 19, 2012 |  |  |  |  | December 28, 2012
Interest rate description |  |  | London Interbank Offered Rate 'LIBOR' plus a spread ranging from 0.225 percent to 0.475 percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | borrowings under the shelf facility bear interest at rates that are determined at the time of the borrowing |  |  | London Interbank Offered Rate (LIBOR) plus a spread ranging from 0.225 percent to 0.475 percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | borrowings under the shelf facility bear interest at rates that are determined at the time of the borrowing |  |  |  | 1.25 percent to 2.00 percent plus LIBOR based on Matson's current credit rating |
Covenant terms |  |  | maintenance of minimum shareholders' equity levels, minimum unencumbered property investment values, and a maximum ratio of debt to earnings before interest, depreciation, amortization and taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | restrictive covenants that are substantially the same as the covenants contained in the revolving senior credit facilities |  |  | maintenance of minimum shareholders' equity levels, minimum unencumbered property investment values, and a maximum ratio of total debt to earnings before interest, depreciation, amortization, and taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  | 19 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total remaining capacity available for borrowing | 358 |  | 198 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 97 |  |  | 122 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 97 |  |  |  |  |
Secured term debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.0 |  |  |  | 6.0 |  |  |  |  |  |  |
Ownership percentage of Phoenix office building (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries that own the property jointly and severally |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends from Subsidiaries [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends received |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45 | $ 60 | $ 60 |  |

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of long-term debt maturities after year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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