XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

CAPITAL CONSTRUCTION FUND - Investment maturity (Details) $ in Millions | Mar. 31, 2024 USD ($) item
--- | ---
CAPITAL CONSTRUCTION FUND |
Remainder of 2024 | $ 47.0
2025 | 186.3
2026 | 164.5
2027 | 52.2
Total CCF investments | 450.0
Remainder of 2024 | 46.9
2025 | 185.7
2026 | 163.6
2027 | 51.9
Total CCF investments | $ 448.1
Number of vessels under agreements for construction | item | 3

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

X
- Definition Cost of capital construction fund investments maturing maturing in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestments
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cost of capital construction fund investments maturing in remainder of current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsCostMaturitiesRemainderOfFiscalYear
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cost of capital construction fund investments maturing maturing in next fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsCostMaturitiesYearOne
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cost of capital construction fund investments maturing maturing in second fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsCostMaturitiesYearThree
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cost of capital construction fund investments maturing maturing in second fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsCostMaturitiesYearTwo
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investments made under capital construction fund. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsFairValue
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fiar value of capital construction fund investments maturing in remainder of current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsFairValueMaturitiesRemainderOfFiscalYear
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of capital construction fund investments maturing maturing in next fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsFairValueMaturitiesYearOne
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of capital construction fund investments maturing maturing in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsFairValueMaturitiesYearThree
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of capital construction fund investments maturing maturing in second fiscal year following current fiscal year. + References No definition available. + Details
Name: | matx_CapitalConstructionFundInvestmentsFairValueMaturitiesYearTwo
Namespace Prefix: | matx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of vessels under agreements for construction. + References No definition available. + Details
Name: | matx_NumberOfVesselsUnderAgreementForConstruction
Namespace Prefix: | matx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant