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LEASES - TERMINATION OF VESSEL CHARTER (Details) - Bareboat Charter Agreement $ in Millions | Jul. 07, 2021 USD ($)
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Termination of Vessel Charter |
Payment of termination of vessel charter | $ 95.8
Derecognized right-of-use asset | (27.4)
Derecognized right-of-use liability | 28.5
Increase in property and equipment | $ 94.7

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- Definition Increase (decrease) in property and equipment. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase (decrease) in right-of-use Lease asset. + References No definition available. + Details
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Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Increase (decrease) in right-of-use liability. + References No definition available. + Details
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Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payment of termination fee per charter agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |