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CAPITAL CONSTRUCTION FUND (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
CAPITAL CONSTRUCTION FUND |  |  |
Maximum period to commit fund deposits for qualified purposes | 25 years |  |
Period over which deposits will be treated as non-qualified withdrawals | 5 years |  |
Deposits into Capital Construction Fund | $ (4.4) | $ (4.4) | $ (4.4)
Eligible accounts receivable assigned to the Capital Construction Fund | 111.8 |  |
Qualified withdrawals from the CCF | 4.4 |  |
Deposits to the CCF by way of assigned eligible accounts receivable | $ 112.0 |  |

X
- Definition The amount of accrued deposits from certain qualified earnings to the Capital Construction Fund that are reflected as obligations on the consolidated balance sheets. + References No definition available. + Details
Name: | matx_AccruedDepositsToCapitalConstructionFund
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of accrued qualified withdrawals from the Capital Construction Fund that are reflected as receivables on the consolidated balance sheets. + References No definition available. + Details
Name: | matx_AccruedWithdrawalFromCapitalConstructionFund
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | matx_CapitalConstructionFundAbstract
Namespace Prefix: | matx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | matx_DepositsIntoCapitalConstructionFund
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the maximum period from the date of deposit to commit deposits for qualified purposes. + References No definition available. + Details
Name: | matx_MaximumPeriodToCommitFundDepositsForQualifiedPurposes
Namespace Prefix: | matx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | matx_PeriodOverWhichDepositsWillBeTreatedAsNonQualifiedWithdrawals
Namespace Prefix: | matx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of accounts receivable assigned to Capital Contribution Fund during the period. + References No definition available. + Details
Name: | matx_TradeAccountsReceivableAssignedToCapitalConstructionFund
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration