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MULTI-EMPLOYER WITHDRAWAL LIABILITY (Tables) | 12 Months Ended
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Dec. 31, 2016
MULTI-EMPLOYER WITHDRAWAL LIABILITY |
Schedule of future estimated annual payments to the multi-employer pension plan | Future estimated annual payments to the multi-employer pension plan as of December 31, 2016 were as follows (in millions):
Year |  | Total
2017 |  | $ | 4.1
2018 |  |  | 4.1
2019 |  |  | 4.1
2020 |  |  | 4.1
2021 |  |  | 4.1
Thereafter |  |  | 76.3
Total future payments |  |  | 96.8
Less: amount representing interest |  |  | (32.6)
Present value of remaining withdrawal liability |  |  | 64.2
Current portion of withdrawal liability |  |  | (4.1)
Long-term portion of withdrawal liability |  | $ | 60.1

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- Definition Schedule of future estimated annual cash payments information related to multiemployer plans in which the employer participates. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References No definition available. + Details
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Namespace Prefix: | matx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_MultiemployerPlansAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration