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Commitments and Contingencies - Schedule of Future Minimum Contracts of Affreightment and Royalty Commitments for All Noncancelable Agreements (Detail) $ in Millions | Dec. 31, 2022 USD ($)
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Commitments and Contingencies Disclosure [Abstract] |
2023 | $ 28.1
2024 | 16.9
2025 | 17.1
2026 | 17.4
2027 | 17.7
Thereafter | 0.0
Total | 97.2
2023 | 24.1
2024 | 15.4
2025 | 12.8
2026 | 10.9
2027 | 10.3
Thereafter | 82.8
Total | $ 156.3

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- Definition Future minimum lease commitments related to contracts of affreightment. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Future minimum lease commitments related to contracts of affreightment due after year five. + References No definition available. + Details
Name: | mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive
Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Future minimum lease commitments related to contracts of affreightment due next twelve months. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Future minimum lease commitments related to contracts of affreightment due year five. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
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- Definition Future minimum lease commitments related to contracts of affreightment due year four. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Future minimum lease commitments related to contracts of affreightment due year three. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Future minimum lease commitments related to contracts of affreightment due year two. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due. + References No definition available. + Details
Name: | mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue
Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due after year five. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due next 12 months. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due year five. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due year four. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due year three. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty commitments future minimum payments due year two. + References No definition available. + Details
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Namespace Prefix: | mlm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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